auth-api-request.spec.ts

/*!
 * @license
 * Copyright 2017 Google LLC
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

'use strict';

import * as _ from 'lodash';
import * as chai from 'chai';
import * as sinon from 'sinon';
import * as sinonChai from 'sinon-chai';
import * as chaiAsPromised from 'chai-as-promised';

import * as utils from '../utils';
import * as mocks from '../../resources/mocks';

import { deepCopy, deepExtend } from '../../../src/utils/deep-copy';
import { FirebaseApp } from '../../../src/app/firebase-app';
import { HttpClient, HttpRequestConfig } from '../../../src/utils/api-request';
import * as validator from '../../../src/utils/validator';
import {
  AuthRequestHandler, FIREBASE_AUTH_GET_ACCOUNT_INFO, FIREBASE_AUTH_GET_ACCOUNTS_INFO,
  FIREBASE_AUTH_DELETE_ACCOUNT, FIREBASE_AUTH_SET_ACCOUNT_INFO,
  FIREBASE_AUTH_SIGN_UP_NEW_USER, FIREBASE_AUTH_DOWNLOAD_ACCOUNT,
  RESERVED_CLAIMS, FIREBASE_AUTH_UPLOAD_ACCOUNT, FIREBASE_AUTH_CREATE_SESSION_COOKIE,
  EMAIL_ACTION_REQUEST_TYPES, TenantAwareAuthRequestHandler, AbstractAuthRequestHandler,
} from '../../../src/auth/auth-api-request';
import { UserImportBuilder } from '../../../src/auth/user-import-builder';
import { AuthClientErrorCode, FirebaseAuthError } from '../../../src/utils/error';
import { ActionCodeSettingsBuilder } from '../../../src/auth/action-code-settings-builder';
import { SAMLConfigServerResponse } from '../../../src/auth/auth-config';
import { expectUserImportResult } from './user-import-builder.spec';
import { getMetricsHeader, getSdkVersion } from '../../../src/utils/index';
import {
  UserImportRecord, OIDCAuthProviderConfig, SAMLAuthProviderConfig, OIDCUpdateAuthProviderRequest,
  SAMLUpdateAuthProviderRequest, UserIdentifier, UpdateRequest, UpdateMultiFactorInfoRequest,
  CreateTenantRequest, UpdateTenantRequest, UpdateProjectConfigRequest,
} from '../../../src/auth/index';

chai.should();
chai.use(sinonChai);
chai.use(chaiAsPromised);

const expect = chai.expect;
const host = 'identitytoolkit.googleapis.com';
const timeout = 25000;


interface HandlerTest {
  name: string;
  supportsTenantManagement: boolean;
  init(app: FirebaseApp): AbstractAuthRequestHandler;
  path(version: string, api: string, projectId: string): string;
}

interface InvalidMultiFactorUpdateTest {
  name: string;
  error: FirebaseAuthError;
  secondFactor: any;
}


/**
 * @param {number} numOfChars The number of random characters within the string.
 * @return {string} A string with a specific number of random characters.
 */
function createRandomString(numOfChars: number): string {
  const chars = [];
  const allowedChars = '1234567890abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ';
  while (numOfChars > 0) {
    const index = Math.floor(Math.random() * allowedChars.length);
    chars.push(allowedChars.charAt(index));
    numOfChars--;
  }
  return chars.join('');
}


describe('FIREBASE_AUTH_CREATE_SESSION_COOKIE', () => {
  // Spy on all validators.
  let isNonEmptyString: sinon.SinonSpy;
  let isNumber: sinon.SinonSpy;

  beforeEach(() => {
    isNonEmptyString = sinon.spy(validator, 'isNonEmptyString');
    isNumber = sinon.spy(validator, 'isNumber');
  });
  afterEach(() => {
    isNonEmptyString.restore();
    isNumber.restore();
  });

  it('should return the correct endpoint', () => {
    expect(FIREBASE_AUTH_CREATE_SESSION_COOKIE.getEndpoint()).to.equal(':createSessionCookie');
  });
  it('should return the correct http method', () => {
    expect(FIREBASE_AUTH_CREATE_SESSION_COOKIE.getHttpMethod()).to.equal('POST');
  });
  describe('requestValidator', () => {
    const requestValidator = FIREBASE_AUTH_CREATE_SESSION_COOKIE.getRequestValidator();
    it('should succeed with valid parameters passed', () => {
      const validRequest = { idToken: 'ID_TOKEN', validDuration: 60 * 60 };
      expect(() => {
        return requestValidator(validRequest);
      }).not.to.throw();
      expect(isNonEmptyString).to.have.been.calledOnce.and.calledWith('ID_TOKEN');
      expect(isNumber).to.have.been.calledOnce.and.calledWith(60 * 60);
    });
    it('should succeed with duration set at minimum allowed', () => {
      const validDuration = 60 * 5;
      const validRequest = { idToken: 'ID_TOKEN', validDuration };
      expect(() => {
        return requestValidator(validRequest);
      }).not.to.throw();
      expect(isNonEmptyString).to.have.been.calledOnce.and.calledWith('ID_TOKEN');
      expect(isNumber).to.have.been.calledOnce.and.calledWith(validDuration);
    });
    it('should succeed with duration set at maximum allowed', () => {
      const validDuration = 60 * 60 * 24 * 14;
      const validRequest = { idToken: 'ID_TOKEN', validDuration };
      expect(() => {
        return requestValidator(validRequest);
      }).not.to.throw();
      expect(isNonEmptyString).to.have.been.calledOnce.and.calledWith('ID_TOKEN');
      expect(isNumber).to.have.been.calledOnce.and.calledWith(validDuration);
    });
    it('should fail when idToken not passed', () => {
      const invalidRequest = { validDuration: 60 * 60 };
      expect(() => {
        return requestValidator(invalidRequest);
      }).to.throw();
      expect(isNonEmptyString).to.have.been.calledOnce.and.calledWith(undefined);
    });
    it('should fail when validDuration not passed', () => {
      const invalidRequest = { idToken: 'ID_TOKEN' };
      expect(() => {
        return requestValidator(invalidRequest);
      }).to.throw();
      expect(isNumber).to.have.been.calledOnce.and.calledWith(undefined);
    });
    describe('called with invalid parameters', () => {
      it('should fail with invalid idToken', () => {
        expect(() => {
          return requestValidator({ idToken: '', validDuration: 60 * 60 });
        }).to.throw();
        expect(isNonEmptyString).to.have.been.calledOnce.and.calledWith('');
      });
      it('should fail with invalid validDuration', () => {
        expect(() => {
          return requestValidator({ idToken: 'ID_TOKEN', validDuration: 'invalid' });
        }).to.throw();
        expect(isNonEmptyString).to.have.been.calledOnce.and.calledWith('ID_TOKEN');
        expect(isNumber).to.have.been.calledOnce.and.calledWith('invalid');
      });
      it('should fail with validDuration less than minimum allowed', () => {
        // Duration less 5 minutes.
        const outOfBoundDuration = 60 * 5 - 1;
        expect(() => {
          return requestValidator({ idToken: 'ID_TOKEN', validDuration: outOfBoundDuration });
        }).to.throw();
        expect(isNonEmptyString).to.have.been.calledOnce.and.calledWith('ID_TOKEN');
        expect(isNumber).to.have.been.calledOnce.and.calledWith(outOfBoundDuration);
      });
      it('should fail with validDuration greater than maximum allowed', () => {
        // Duration greater than 14 days.
        const outOfBoundDuration = 60 * 60 * 24 * 14 + 1;
        expect(() => {
          return requestValidator({ idToken: 'ID_TOKEN', validDuration: outOfBoundDuration });
        }).to.throw();
        expect(isNonEmptyString).to.have.been.calledOnce.and.calledWith('ID_TOKEN');
        expect(isNumber).to.have.been.calledOnce.and.calledWith(outOfBoundDuration);
      });
    });
  });
  describe('responseValidator', () => {
    const responseValidator = FIREBASE_AUTH_CREATE_SESSION_COOKIE.getResponseValidator();
    it('should succeed with sessionCookie returned', () => {
      const validResponse = { sessionCookie: 'SESSION_COOKIE' };
      expect(() => {
        return responseValidator(validResponse);
      }).not.to.throw();
    });
    it('should fail when no session cookie is returned', () => {
      const invalidResponse = {};
      expect(() => {
        responseValidator(invalidResponse);
      }).to.throw();
    });
  });
});


describe('FIREBASE_AUTH_UPLOAD_ACCOUNT', () => {
  it('should return the correct endpoint', () => {
    expect(FIREBASE_AUTH_UPLOAD_ACCOUNT.getEndpoint()).to.equal('/accounts:batchCreate');
  });
  it('should return the correct http method', () => {
    expect(FIREBASE_AUTH_UPLOAD_ACCOUNT.getHttpMethod()).to.equal('POST');
  });
  it('should return empty request validator', () => {
    expect(FIREBASE_AUTH_UPLOAD_ACCOUNT.getRequestValidator()).to.not.be.null;
    expect(() => {
      const emptyRequest = {};
      const requestValidator = FIREBASE_AUTH_UPLOAD_ACCOUNT.getRequestValidator();
      requestValidator(emptyRequest);
    }).not.to.throw();
  });
  it('should return empty response validator', () => {
    expect(FIREBASE_AUTH_UPLOAD_ACCOUNT.getResponseValidator()).to.not.be.null;
    expect(() => {
      const emptyResponse = {};
      const responseValidator = FIREBASE_AUTH_UPLOAD_ACCOUNT.getResponseValidator();
      responseValidator(emptyResponse);
    }).not.to.throw();
  });
});


describe('FIREBASE_AUTH_DOWNLOAD_ACCOUNT', () => {
  // Spy on all validators.
  let isNonEmptyString: sinon.SinonSpy;
  let isNumber: sinon.SinonSpy;

  beforeEach(() => {
    isNonEmptyString = sinon.spy(validator, 'isNonEmptyString');
    isNumber = sinon.spy(validator, 'isNumber');
  });
  afterEach(() => {
    isNonEmptyString.restore();
    isNumber.restore();
  });

  it('should return the correct endpoint', () => {
    expect(FIREBASE_AUTH_DOWNLOAD_ACCOUNT.getEndpoint()).to.equal('/accounts:batchGet');
  });
  it('should return the correct http method', () => {
    expect(FIREBASE_AUTH_DOWNLOAD_ACCOUNT.getHttpMethod()).to.equal('GET');
  });
  it('should return empty response validator', () => {
    expect(FIREBASE_AUTH_DOWNLOAD_ACCOUNT.getResponseValidator()).to.not.be.null;
    expect(() => {
      const emptyResponse = {};
      const responseValidator = FIREBASE_AUTH_DOWNLOAD_ACCOUNT.getResponseValidator();
      responseValidator(emptyResponse);
    }).not.to.throw();
  });
  describe('requestValidator', () => {
    const requestValidator = FIREBASE_AUTH_DOWNLOAD_ACCOUNT.getRequestValidator();
    it('should succeed with valid maxResults passed', () => {
      const validRequest = { maxResults: 500 };
      expect(() => {
        return requestValidator(validRequest);
      }).not.to.throw();
      expect(isNumber).to.have.been.calledOnce.and.calledWith(500);
    });
    it('should succeed with valid maxResults and other optional parameters', () => {
      const validRequest = {
        maxResults: 500,
        nextPageToken: 'PAGE_TOKEN',
        // Pass an unsupported parameter which should be ignored.
        ignoreMe: 'bla',
      };
      expect(() => {
        return requestValidator(validRequest);
      }).not.to.throw();
      expect(isNumber).to.have.been.calledOnce.and.calledWith(500);
      expect(isNonEmptyString).to.have.been.calledOnce.and.calledWith('PAGE_TOKEN');
    });
    it('should fail when maxResults not passed', () => {
      const invalidRequest = {};
      expect(() => {
        return requestValidator(invalidRequest);
      }).to.throw();
      expect(isNumber).to.have.been.calledOnce.and.calledWith(undefined);
    });
    describe('called with invalid parameters', () => {
      it('should fail with invalid maxResults', () => {
        expect(() => {
          return requestValidator({ maxResults: '' });
        }).to.throw();
        expect(isNumber).to.have.been.calledOnce.and.calledWith('');
      });
      it('should fail with zero maxResults', () => {
        expect(() => {
          return requestValidator({ maxResults: 0 });
        }).to.throw();
        expect(isNumber).to.have.been.calledOnce.and.calledWith(0);
      });
      it('should fail with negative maxResults', () => {
        expect(() => {
          return requestValidator({ maxResults: -500 });
        }).to.throw();
        expect(isNumber).to.have.been.calledOnce.and.calledWith(-500);
      });
      it('should fail with maxResults exceeding allowed limit', () => {
        expect(() => {
          return requestValidator({ maxResults: 1001 });
        }).to.throw();
        expect(isNumber).to.have.been.calledOnce.and.calledWith(1001);
      });
      it('should fail with invalid nextPageToken', () => {
        expect(() => {
          return requestValidator({ maxResults: 1000, nextPageToken: ['PAGE_TOKEN'] });
        }).to.throw();
        expect(isNonEmptyString).to.have.been.calledOnce.and.calledWith(['PAGE_TOKEN']);
      });
    });
  });
});

describe('FIREBASE_AUTH_GET_ACCOUNT_INFO', () => {
  it('should return the correct endpoint', () => {
    expect(FIREBASE_AUTH_GET_ACCOUNT_INFO.getEndpoint()).to.equal('/accounts:lookup');
  });
  it('should return the correct http method', () => {
    expect(FIREBASE_AUTH_GET_ACCOUNT_INFO.getHttpMethod()).to.equal('POST');
  });
  describe('requestValidator', () => {
    const requestValidator = FIREBASE_AUTH_GET_ACCOUNT_INFO.getRequestValidator();
    it('should succeed with localId passed', () => {
      const validRequest = { localId: ['1234'] };
      expect(() => {
        return requestValidator(validRequest);
      }).not.to.throw();
    });
    it('should succeed with email passed', () => {
      const validRequest = { email: ['user@example.com'] };
      expect(() => {
        return requestValidator(validRequest);
      }).not.to.throw();
    });
    it('should succeed with phoneNumber passed', () => {
      const validRequest = { phoneNumber: ['+11234567890'] };
      expect(() => {
        return requestValidator(validRequest);
      }).not.to.throw();
    });
    it('should succeed with federatedUserId passed', () => {
      const validRequest = { federatedUserId: [{ providerId: 'google.com', rawId: 'google_uid' }] };
      expect(() => {
        return requestValidator(validRequest);
      }).not.to.throw();
    });
    it('should succeed with federatedUserId passed', () => {
      const validRequest = { federatedUserId: { providerId: 'google.com', rawId: 'google_uid_1234' } };
      expect(() => {
        return requestValidator(validRequest);
      }).not.to.throw();
    });
    it('should fail when neither localId, email or phoneNumber are passed', () => {
      const invalidRequest = { bla: ['1234'] };
      expect(() => {
        return requestValidator(invalidRequest);
      }).to.throw();
    });
  });
  describe('responseValidator', () => {
    const responseValidator = FIREBASE_AUTH_GET_ACCOUNT_INFO.getResponseValidator();
    it('should succeed with users returned', () => {
      const validResponse: object = { users: [{ localId: 'foo' }] };
      expect(() => {
        return responseValidator(validResponse);
      }).not.to.throw();
    });
    it('should fail when the response object is empty', () => {
      const invalidResponse = {};
      expect(() => {
        responseValidator(invalidResponse);
      }).to.throw();
    });
    it('should fail when the response object has an empty list of users', () => {
      const invalidResponse = { users: [] };
      expect(() => {
        responseValidator(invalidResponse);
      }).to.throw();
    });
  });
});

describe('FIREBASE_AUTH_GET_ACCOUNTS_INFO', () => {
  it('should return the correct endpoint', () => {
    expect(FIREBASE_AUTH_GET_ACCOUNTS_INFO.getEndpoint()).to.equal('/accounts:lookup');
  });
  it('should return the correct http method', () => {
    expect(FIREBASE_AUTH_GET_ACCOUNTS_INFO.getHttpMethod()).to.equal('POST');
  });
  describe('requestValidator', () => {
    const requestValidator = FIREBASE_AUTH_GET_ACCOUNTS_INFO.getRequestValidator();
    it('should succeed with localId passed', () => {
      const validRequest = { localId: ['1234'] };
      expect(() => {
        return requestValidator(validRequest);
      }).not.to.throw();
    });
    it('should succeed with email passed', () => {
      const validRequest = { email: ['user@example.com'] };
      expect(() => {
        return requestValidator(validRequest);
      }).not.to.throw();
    });
    it('should succeed with phoneNumber passed', () => {
      const validRequest = { phoneNumber: ['+11234567890'] };
      expect(() => {
        return requestValidator(validRequest);
      }).not.to.throw();
    });
    it('should succeed with federatedUserId passed', () => {
      const validRequest = { federatedUserId: [{ providerId: 'google.com', rawId: 'google_uid' }] };
      expect(() => {
        return requestValidator(validRequest);
      }).not.to.throw();
    });
    it('should fail when neither localId, email or phoneNumber are passed', () => {
      const invalidRequest = { bla: ['1234'] };
      expect(() => {
        return requestValidator(invalidRequest);
      }).to.throw();
    });
    it('should succeed when multiple identifiers passed', () => {
      const validRequest = {
        localId: ['123', '456'],
        email: ['user1@example.com', 'user2@example.com'],
        phoneNumber: ['+15555550001', '+15555550002'],
        federatedUserId: [
          { providerId: 'google.com', rawId: 'google_uid1' },
          { providerId: 'google.com', rawId: 'google_uid2' }
        ] };
      expect(() => {
        return requestValidator(validRequest);
      }).not.to.throw();
    });
  });
  describe('responseValidator', () => {
    const responseValidator = FIREBASE_AUTH_GET_ACCOUNTS_INFO.getResponseValidator();
    it('should succeed with users returned', () => {
      const validResponse: object = { users: [] };
      expect(() => {
        return responseValidator(validResponse);
      }).not.to.throw();
    });
    it('should succeed even if users are not returned', () => {
      const invalidResponse = {};
      expect(() => {
        responseValidator(invalidResponse);
      }).not.to.throw();
    });
  });
});

describe('FIREBASE_AUTH_DELETE_ACCOUNT', () => {
  it('should return the correct endpoint', () => {
    expect(FIREBASE_AUTH_DELETE_ACCOUNT.getEndpoint()).to.equal('/accounts:delete');
  });
  it('should return the correct http method', () => {
    expect(FIREBASE_AUTH_DELETE_ACCOUNT.getHttpMethod()).to.equal('POST');
  });
  it('should return empty response validator', () => {
    expect(FIREBASE_AUTH_DELETE_ACCOUNT.getResponseValidator()).to.not.be.null;
    expect(() => {
      const emptyResponse = {};
      const responseValidator = FIREBASE_AUTH_DELETE_ACCOUNT.getResponseValidator();
      responseValidator(emptyResponse);
    }).not.to.throw();
  });
  describe('requestValidator', () => {
    const requestValidator = FIREBASE_AUTH_DELETE_ACCOUNT.getRequestValidator();
    it('should succeed with localId passed', () => {
      const validRequest = { localId: '1234' };
      expect(() => {
        return requestValidator(validRequest);
      }).not.to.throw();
    });
    it('should fail when localId not passed', () => {
      const invalidRequest = { bla: '1234' };
      expect(() => {
        return requestValidator(invalidRequest);
      }).to.throw();
    });
  });
});

describe('FIREBASE_AUTH_SET_ACCOUNT_INFO', () => {
  // Spy on all validators.
  let isUidSpy: sinon.SinonSpy;
  let isEmailSpy: sinon.SinonSpy;
  let isPasswordSpy: sinon.SinonSpy;
  let isUrlSpy: sinon.SinonSpy;
  let isPhoneNumberSpy: sinon.SinonSpy;
  let isNumberSpy: sinon.SinonSpy;

  beforeEach(() => {
    isUidSpy = sinon.spy(validator, 'isUid');
    isEmailSpy = sinon.spy(validator, 'isEmail');
    isPasswordSpy = sinon.spy(validator, 'isPassword');
    isUrlSpy = sinon.spy(validator, 'isURL');
    isPhoneNumberSpy = sinon.spy(validator, 'isPhoneNumber');
    isNumberSpy = sinon.spy(validator, 'isNumber');
  });
  afterEach(() => {
    isUidSpy.restore();
    isEmailSpy.restore();
    isPasswordSpy.restore();
    isUrlSpy.restore();
    isPhoneNumberSpy.restore();
    isNumberSpy.restore();
  });

  it('should return the correct endpoint', () => {
    expect(FIREBASE_AUTH_SET_ACCOUNT_INFO.getEndpoint()).to.equal('/accounts:update');
  });
  it('should return the correct http method', () => {
    expect(FIREBASE_AUTH_SET_ACCOUNT_INFO.getHttpMethod()).to.equal('POST');
  });
  describe('requestValidator', () => {
    const requestValidator = FIREBASE_AUTH_SET_ACCOUNT_INFO.getRequestValidator();
    it('should succeed with valid localId passed', () => {
      const validRequest = { localId: '1234' };
      expect(() => {
        return requestValidator(validRequest);
      }).not.to.throw();
      expect(isUidSpy).to.have.been.calledOnce.and.calledWith('1234');
    });
    it('should succeed with valid localId and other optional parameters', () => {
      const validRequest = {
        localId: '1234',
        displayName: 'John Doe',
        email: 'user@example.com',
        password: 'password',
        emailVerified: true,
        photoUrl: 'http://www.example.com/1234/photo.png',
        disableUser: false,
        phoneNumber: '+11234567890',
        customAttributes: JSON.stringify({ admin: true, groupId: '123' }),
        validSince: 1476136676,
        // Pass an unsupported parameter which should be ignored.
        ignoreMe: 'bla',
      };
      expect(() => {
        return requestValidator(validRequest);
      }).not.to.throw();
      expect(isUidSpy).to.have.been.calledOnce.and.calledWith('1234');
      expect(isEmailSpy).to.have.been.calledOnce.and.calledWith('user@example.com');
      expect(isPasswordSpy).to.have.been.calledOnce.and.calledWith('password');
      expect(isUrlSpy).to.have.been.calledOnce.and
        .calledWith('http://www.example.com/1234/photo.png');
      expect(isPhoneNumberSpy).to.have.been.calledOnce.and.calledWith('+11234567890');
      expect(isNumberSpy).to.have.been.calledOnce.and.calledWith(1476136676);
    });
    it('should succeed with valid localId and customAttributes with 1000 char payload', () => {
      // Test with 1000 characters.
      const atLimitClaims = JSON.stringify({ key: createRandomString(990) });
      expect(() => {
        return requestValidator({ localId: '1234', customAttributes: atLimitClaims });
      }).not.to.throw();
    });
    it('should fail when localId not passed', () => {
      const invalidRequest = {};
      expect(() => {
        return requestValidator(invalidRequest);
      }).to.throw();
      expect(isUidSpy).to.have.not.been.called;
    });
    describe('called with invalid parameters', () => {
      it('should fail with invalid localId', () => {
        expect(() => {
          return requestValidator({ localId: '' });
        }).to.throw();
        expect(isUidSpy).to.have.been.calledOnce.and.calledWith('');
      });
      it('should fail with invalid displayName', () => {
        expect(() => {
          return requestValidator({ localId: '1234', displayName: ['John Doe'] });
        }).to.throw();
      });
      it('should fail with invalid email', () => {
        expect(() => {
          return requestValidator({ localId: '1234', email: 'invalid' });
        }).to.throw();
        expect(isEmailSpy).to.have.been.calledOnce.and.calledWith('invalid');
      });
      it('should fail with invalid password', () => {
        expect(() => {
          return requestValidator({ localId: '1234', password: 'short' });
        }).to.throw();
        expect(isPasswordSpy).to.have.been.calledOnce.and.calledWith('short');
      });
      it('should fail with invalid emailVerified flag', () => {
        expect(() => {
          return requestValidator({ localId: '1234', emailVerified: 'yes' });
        }).to.throw();
      });
      it('should fail with invalid photoUrl', () => {
        expect(() => {
          return requestValidator({ localId: '1234', photoUrl: 'invalid url' });
        }).to.throw();
        expect(isUrlSpy).to.have.been.calledOnce.and.calledWith('invalid url');
      });
      it('should fail with invalid disableUser flag', () => {
        expect(() => {
          return requestValidator({ localId: '1234', disableUser: 'no' });
        }).to.throw();
      });
      it('should fail with invalid phoneNumber', () => {
        expect(() => {
          return requestValidator({ localId: '1234', phoneNumber: 'invalid' });
        }).to.throw();
        expect(isPhoneNumberSpy).to.have.been.calledOnce.and.calledWith('invalid');
      });
      it('should fail with invalid JSON customAttributes', () => {
        expect(() => {
          return requestValidator({ localId: '1234', customAttributes: 'invalid' });
        }).to.throw();
      });
      it('should fail with customAttributes exceeding maximum allowed payload', () => {
        // Test with 1001 characters.
        const largeClaims = JSON.stringify({ key: createRandomString(991) });
        expect(() => {
          return requestValidator({ localId: '1234', customAttributes: largeClaims });
        }).to.throw('Developer claims payload should not exceed 1000 characters.');
      });
      RESERVED_CLAIMS.forEach((invalidClaim) => {
        it(`should fail with customAttributes containing blacklisted claim: ${invalidClaim}`, () => {
          expect(() => {
            // Instantiate custom attributes with invalid claims.
            const claims: {[key: string]: any} = {};
            claims[invalidClaim] = 'bla';
            return requestValidator({ localId: '1234', customAttributes: JSON.stringify(claims) });
          }).to.throw(`Developer claim "${invalidClaim}" is reserved and cannot be specified.`);
        });
      });
      it('should fail with customAttributes containing multi-blacklisted claims', () => {
        expect(() => {
          const claims = {
            sub: 'sub',
            auth_time: 'time',
          };
          return requestValidator({ localId: '1234', customAttributes: JSON.stringify(claims) });
        }).to.throw('Developer claims "auth_time", "sub" are reserved and cannot be specified.');
      });
      it('should fail with invalid validSince', () => {
        expect(() => {
          return requestValidator({ localId: '1234', validSince: 'invalid' });
        }).to.throw('The tokensValidAfterTime must be a valid UTC number in seconds.');
        expect(isNumberSpy).to.have.been.calledOnce.and.calledWith('invalid');
      });
    });
  });
  describe('responseValidator', () => {
    const responseValidator = FIREBASE_AUTH_SET_ACCOUNT_INFO.getResponseValidator();
    it('should succeed with localId returned', () => {
      const validResponse = { localId: '1234' };
      expect(() => {
        return responseValidator(validResponse);
      }).not.to.throw();
    });
    it('should fail when localId is not returned', () => {
      const invalidResponse = {};
      expect(() => {
        return responseValidator(invalidResponse);
      }).to.throw();
    });
  });
});

describe('FIREBASE_AUTH_SIGN_UP_NEW_USER', () => {
  // Spy on all validators.
  let isUidSpy: sinon.SinonSpy;
  let isEmailSpy: sinon.SinonSpy;
  let isPasswordSpy: sinon.SinonSpy;
  let isUrlSpy: sinon.SinonSpy;
  let isPhoneNumberSpy: sinon.SinonSpy;

  beforeEach(() => {
    isUidSpy = sinon.spy(validator, 'isUid');
    isEmailSpy = sinon.spy(validator, 'isEmail');
    isPasswordSpy = sinon.spy(validator, 'isPassword');
    isUrlSpy = sinon.spy(validator, 'isURL');
    isPhoneNumberSpy = sinon.spy(validator, 'isPhoneNumber');
  });
  afterEach(() => {
    isUidSpy.restore();
    isEmailSpy.restore();
    isPasswordSpy.restore();
    isUrlSpy.restore();
    isPhoneNumberSpy.restore();
  });

  it('should return the correct endpoint', () => {
    expect(FIREBASE_AUTH_SIGN_UP_NEW_USER.getEndpoint()).to.equal('/accounts');
  });
  it('should return the correct http method', () => {
    expect(FIREBASE_AUTH_SIGN_UP_NEW_USER.getHttpMethod()).to.equal('POST');
  });
  describe('requestValidator', () => {
    const requestValidator = FIREBASE_AUTH_SIGN_UP_NEW_USER.getRequestValidator();
    it('should succeed with valid parameters excluding uid', () => {
      const validRequest = {
        displayName: 'John Doe',
        email: 'user@example.com',
        password: 'password',
        emailVerified: true,
        photoUrl: 'http://www.example.com/1234/photo.png',
        disabled: false,
        phoneNumber: '+11234567890',
        // Pass an unsupported parameter which should be ignored.
        ignoreMe: 'bla',
      };
      expect(() => {
        return requestValidator(validRequest);
      }).not.to.throw();
      expect(isUidSpy).to.have.not.been.called;
      expect(isEmailSpy).to.have.been.calledOnce.and.calledWith('user@example.com');
      expect(isPasswordSpy).to.have.been.calledOnce.and.calledWith('password');
      expect(isUrlSpy).to.have.been.calledOnce.and
        .calledWith('http://www.example.com/1234/photo.png');
      expect(isPhoneNumberSpy).to.have.been.calledOnce.and.calledWith('+11234567890');
    });
    it('should succeed with valid parameters including uid', () => {
      const validRequest = {
        localId: '1234',
        displayName: 'John Doe',
        email: 'user@example.com',
        password: 'password',
        emailVerified: true,
        photoUrl: 'http://www.example.com/1234/photo.png',
        disabled: false,
        phoneNumber: '+11234567890',
        // Pass an unsupported parameter which should be ignored.
        ignoreMe: 'bla',
      };
      expect(() => {
        return requestValidator(validRequest);
      }).not.to.throw();
      expect(isUidSpy).to.have.been.calledOnce.and.calledWith('1234');
      expect(isEmailSpy).to.have.been.calledOnce.and.calledWith('user@example.com');
      expect(isPasswordSpy).to.have.been.calledOnce.and.calledWith('password');
      expect(isUrlSpy).to.have.been.calledOnce.and
        .calledWith('http://www.example.com/1234/photo.png');
      expect(isPhoneNumberSpy).to.have.been.calledOnce.and.calledWith('+11234567890');
    });
    it('should succeed with no parameters', () => {
      expect(() => {
        return requestValidator({});
      }).not.to.throw();
    });
    describe('called with invalid parameters', () => {
      it('should fail with invalid localId', () => {
        expect(() => {
          return requestValidator({ localId: '' });
        }).to.throw();
        expect(isUidSpy).to.have.been.calledOnce.and.calledWith('');
      });
      it('should fail with invalid displayName', () => {
        expect(() => {
          return requestValidator({ displayName: ['John Doe'] });
        }).to.throw();
      });
      it('should fail with invalid email', () => {
        expect(() => {
          return requestValidator({ email: 'invalid' });
        }).to.throw();
        expect(isEmailSpy).to.have.been.calledOnce.and.calledWith('invalid');
      });
      it('should fail with invalid password', () => {
        expect(() => {
          return requestValidator({ password: 'short' });
        }).to.throw();
        expect(isPasswordSpy).to.have.been.calledOnce.and.calledWith('short');
      });
      it('should fail with invalid emailVerified flag', () => {
        expect(() => {
          return requestValidator({ emailVerified: 'yes' });
        }).to.throw();
      });
      it('should fail with invalid photoUrl', () => {
        expect(() => {
          return requestValidator({ photoUrl: 'invalid url' });
        }).to.throw();
        expect(isUrlSpy).to.have.been.calledOnce.and.calledWith('invalid url');
      });
      it('should fail with invalid disabled flag', () => {
        expect(() => {
          return requestValidator({ disabled: 'no' });
        }).to.throw();
      });
      it('should fail with invalid phoneNumber', () => {
        expect(() => {
          return requestValidator({ phoneNumber: 'invalid' });
        }).to.throw();
        expect(isPhoneNumberSpy).to.have.been.calledOnce.and.calledWith('invalid');
      });
      it('should fail with customAttributes', () => {
        expect(() => {
          return requestValidator({ customAttributes: JSON.stringify({ admin: true }) });
        }).to.throw();
      });
      it('should fail with validSince', () => {
        expect(() => {
          return requestValidator({ validSince: 1476136676 });
        }).to.throw();
      });
    });
  });
  describe('responseValidator', () => {
    const responseValidator = FIREBASE_AUTH_SIGN_UP_NEW_USER.getResponseValidator();
    it('should succeed with localId returned', () => {
      const validResponse = { localId: '1234' };
      expect(() => {
        return responseValidator(validResponse);
      }).not.to.throw();
    });
    it('should fail when localId is not returned', () => {
      const invalidResponse = {};
      expect(() => {
        responseValidator(invalidResponse);
      }).to.throw();
    });
  });
});


const AUTH_REQUEST_HANDLER_TESTS: HandlerTest[] = [
  {
    name: 'FirebaseAuthRequestHandler',
    init: (app: FirebaseApp) => {
      return new AuthRequestHandler(app);
    },
    path: (version: string, api: string, projectId: string) => {
      return `/${version}/projects/${projectId}${api}`;
    },
    supportsTenantManagement: true,
  },
  {
    name: 'FirebaseTenantRequestHandler',
    init: (app: FirebaseApp) => {
      return new TenantAwareAuthRequestHandler(app, TENANT_ID);
    },
    path: (version: string, api: string, projectId: string) => {
      return `/${version}/projects/${projectId}/tenants/${TENANT_ID}${api}`;
    },
    supportsTenantManagement: false,
  },
];

const TENANT_ID = 'tenantId';
AUTH_REQUEST_HANDLER_TESTS.forEach((handler) => {
  describe(handler.name, () => {
    let mockApp: FirebaseApp;
    let stubs: sinon.SinonStub[] = [];
    let getTokenStub: sinon.SinonStub;
    const mockAccessToken: string = utils.generateRandomAccessToken();
    const expectedHeaders: {[key: string]: string} = {
      'X-Client-Version': `Node/Admin/${getSdkVersion()}`,
      'X-Goog-Api-Client': getMetricsHeader(),
      'Authorization': 'Bearer ' + mockAccessToken,
    };
    const expectedHeadersEmulator: {[key: string]: string} = {
      'X-Client-Version': `Node/Admin/${getSdkVersion()}`,
      'X-Goog-Api-Client': getMetricsHeader(),
      'Authorization': 'Bearer owner',
    };
    const callParams = (path: string, method: any, data: any): HttpRequestConfig => {
      return {
        method,
        url: `https://${host}${path}`,
        headers: expectedHeaders,
        data,
        timeout,
      };
    };

    before(() => {
      getTokenStub = utils.stubGetAccessToken(mockAccessToken);
    });

    after(() => {
      stubs = [];
      getTokenStub.restore();
    });

    beforeEach(() => {
      mockApp = mocks.app();
      return mockApp.INTERNAL.getToken();
    });

    afterEach(() => {
      _.forEach(stubs, (stub) => stub.restore());
      return mockApp.delete();
    });

    describe('Constructor', () => {
      it('should succeed with a FirebaseApp instance', () => {
        expect(() => {
          return handler.init(mockApp);
        }).not.to.throw(Error);
      });
    });

    describe('Emulator Support', () => {
      const method = 'POST';
      const path = handler.path('v1', '/accounts:lookup', 'project_id');
      const expectedResult = utils.responseFrom({
        users : [
          { localId: 'uid' },
        ],
      });
      const data = { localId: ['uid'] };

      after(() => {
        delete process.env.FIREBASE_AUTH_EMULATOR_HOST;
      })

      it('should call a prod URL with a real token when emulator is not running', () => {
        const stub = sinon.stub(HttpClient.prototype, 'send').resolves(expectedResult);
        stubs.push(stub);

        const requestHandler = handler.init(mockApp);

        return requestHandler.getAccountInfoByUid('uid')
          .then(() => {
            expect(stub).to.have.been.calledOnce.and.calledWith({
              method,
              url: `https://${host}${path}`,
              data,
              headers: expectedHeaders,
              timeout,
            });
          });
      });

      it('should call a local URL with a mock token when the emulator is running', () => {
        const emulatorHost = 'localhost:9099';
        process.env.FIREBASE_AUTH_EMULATOR_HOST = emulatorHost;

        const stub = sinon.stub(HttpClient.prototype, 'send').resolves(expectedResult);
        stubs.push(stub);

        const requestHandler = handler.init(mockApp);
        return requestHandler.getAccountInfoByUid('uid')
          .then(() => {
            expect(stub).to.have.been.calledOnce.and.calledWith({
              method,
              url: `http://${emulatorHost}/identitytoolkit.googleapis.com${path}`,
              data,
              headers: expectedHeadersEmulator,
              timeout,
            });
          });
      });
    });

    describe('createSessionCookie', () => {
      const durationInMs = 24 * 60 * 60 * 1000;
      const path = handler.path('v1', ':createSessionCookie', 'project_id');
      const method = 'POST';

      it('should be fulfilled given a valid localId', () => {
        const expectedResult = utils.responseFrom({
          sessionCookie: 'SESSION_COOKIE',
        });
        const data = { idToken: 'ID_TOKEN', validDuration: durationInMs / 1000 };
        const stub = sinon.stub(HttpClient.prototype, 'send').resolves(expectedResult);
        stubs.push(stub);

        const requestHandler = handler.init(mockApp);
        return requestHandler.createSessionCookie('ID_TOKEN', durationInMs)
          .then((result) => {
            expect(result).to.deep.equal('SESSION_COOKIE');
            expect(stub).to.have.been.calledOnce.and.calledWith(callParams(path, method, data));
          });
      });
      it('should be fulfilled given a duration equal to the maximum allowed', () => {
        const expectedResult = utils.responseFrom({
          sessionCookie: 'SESSION_COOKIE',
        });
        const durationAtLimitInMs = 14 * 24 * 60 * 60 * 1000;
        const data = { idToken: 'ID_TOKEN', validDuration: durationAtLimitInMs / 1000 };
        const stub = sinon.stub(HttpClient.prototype, 'send').resolves(expectedResult);
        stubs.push(stub);

        const requestHandler = handler.init(mockApp);
        return requestHandler.createSessionCookie('ID_TOKEN', durationAtLimitInMs)
          .then((result) => {
            expect(result).to.deep.equal('SESSION_COOKIE');
            expect(stub).to.have.been.calledOnce.and.calledWith(callParams(path, method, data));
          });
      });
      it('should be fulfilled given a duration equal to the minimum allowed', () => {
        const expectedResult = utils.responseFrom({
          sessionCookie: 'SESSION_COOKIE',
        });
        const durationAtLimitInMs = 5 * 60 * 1000;
        const data = { idToken: 'ID_TOKEN', validDuration: durationAtLimitInMs / 1000 };
        const stub = sinon.stub(HttpClient.prototype, 'send').resolves(expectedResult);
        stubs.push(stub);

        const requestHandler = handler.init(mockApp);
        return requestHandler.createSessionCookie('ID_TOKEN', durationAtLimitInMs)
          .then((result) => {
            expect(result).to.deep.equal('SESSION_COOKIE');
            expect(stub).to.have.been.calledOnce.and.calledWith(callParams(path, method, data));
          });
      });
      it('should be rejected given an invalid ID token', () => {
        const expectedError = new FirebaseAuthError(
          AuthClientErrorCode.INVALID_ID_TOKEN,
        );

        const requestHandler = handler.init(mockApp);
        return requestHandler.createSessionCookie('', durationInMs)
          .then(() => {
            throw new Error('Unexpected success');
          }, (error) => {
            expect(error).to.deep.include(expectedError);
          });
      });
      it('should be rejected given an invalid duration', () => {
        const expectedError = new FirebaseAuthError(
          AuthClientErrorCode.INVALID_SESSION_COOKIE_DURATION,
        );

        const requestHandler = handler.init(mockApp);
        return requestHandler.createSessionCookie('ID_TOKEN', 'invalid' as any)
          .then(() => {
            throw new Error('Unexpected success');
          }, (error) => {
            expect(error).to.deep.include(expectedError);
          });
      });
      it('should be rejected given a duration less than minimum allowed', () => {
        const expectedError = new FirebaseAuthError(
          AuthClientErrorCode.INVALID_SESSION_COOKIE_DURATION,
        );
        const outOfBoundDuration = 60 * 1000 * 5 - 1;

        const requestHandler = handler.init(mockApp);
        return requestHandler.createSessionCookie('ID_TOKEN', outOfBoundDuration)
          .then(() => {
            throw new Error('Unexpected success');
          }, (error) => {
            expect(error).to.deep.include(expectedError);
          });
      });
      it('should be rejected given a duration greater than maximum allowed', () => {
        const expectedError = new FirebaseAuthError(
          AuthClientErrorCode.INVALID_SESSION_COOKIE_DURATION,
        );
        // Add more than a second since this value is Math.floor()'ed
        const outOfBoundDuration = 60 * 60 * 1000 * 24 * 14 + 1001;

        const requestHandler = handler.init(mockApp);
        return requestHandler.createSessionCookie('ID_TOKEN', outOfBoundDuration)
          .then(() => {
            throw new Error('Unexpected success');
          }, (error) => {
            expect(error).to.deep.include(expectedError);
          });
      });
      it('should be rejected when the backend returns an error', () => {
        const expectedResult = utils.errorFrom({
          error: {
            message: 'INVALID_ID_TOKEN',
          },
        });
        const expectedError = new FirebaseAuthError(AuthClientErrorCode.INVALID_ID_TOKEN);
        const data = { idToken: 'invalid-token', validDuration: durationInMs / 1000 };
        const stub = sinon.stub(HttpClient.prototype, 'send').rejects(expectedResult);
        stubs.push(stub);

        const requestHandler = handler.init(mockApp);
        return requestHandler.createSessionCookie('invalid-token', durationInMs)
          .then(() => {
            throw new Error('Unexpected success');
          }, (error) => {
            expect(error).to.deep.include(expectedError);
            expect(stub).to.have.been.calledOnce.and.calledWith(callParams(path, method, data));
          });
      });
    });

    describe('getAccountInfoByEmail', () => {
      const path = handler.path('v1', '/accounts:lookup', 'project_id');
      const method = 'POST';
      it('should be fulfilled given a valid email', () => {
        const expectedResult = utils.responseFrom({
          users : [
            { email: 'user@example.com' },
          ],
        });
        const data = { email: ['user@example.com'] };
        const stub = sinon.stub(HttpClient.prototype, 'send').resolves(expectedResult);
        stubs.push(stub);

        const requestHandler = handler.init(mockApp);
        return requestHandler.getAccountInfoByEmail('user@example.com')
          .then((result) => {
            expect(result).to.deep.equal(expectedResult.data);
            expect(stub).to.have.been.calledOnce.and.calledWith({
              method,
              url: `https://${host}${path}`,
              data,
              headers: expectedHeaders,
              timeout,
            });
          });
      });
      it('should be rejected given an invalid email', () => {
        const expectedResult = utils.responseFrom({
          kind: 'identitytoolkit#GetAccountInfoResponse',
        });
        const expectedError = new FirebaseAuthError(AuthClientErrorCode.USER_NOT_FOUND);
        const data = { email: ['user@example.com'] };
        const stub = sinon.stub(HttpClient.prototype, 'send').resolves(expectedResult);
        stubs.push(stub);

        const requestHandler = handler.init(mockApp);
        return requestHandler.getAccountInfoByEmail('user@example.com')
          .then(() => {
            throw new Error('Unexpected success');
          }, (error) => {
            expect(error).to.deep.include(expectedError);
            expect(stub).to.have.been.calledOnce.and.calledWith(callParams(path, method, data));
          });
      });
    });

    describe('getAccountInfoByUid', () => {
      const path = handler.path('v1', '/accounts:lookup', 'project_id');
      const method = 'POST';
      it('should be fulfilled given a valid localId', () => {
        const expectedResult = utils.responseFrom({
          users : [
            { localId: 'uid' },
          ],
        });
        const data = { localId: ['uid'] };
        const stub = sinon.stub(HttpClient.prototype, 'send').resolves(expectedResult);
        stubs.push(stub);

        const requestHandler = handler.init(mockApp);
        return requestHandler.getAccountInfoByUid('uid')
          .then((result) => {
            expect(result).to.deep.equal(expectedResult.data);
            expect(stub).to.have.been.calledOnce.and.calledWith(callParams(path, method, data));
          });
      });
      it('should be rejected given an invalid localId', () => {
        const expectedResult = utils.responseFrom({
          kind: 'identitytoolkit#GetAccountInfoResponse',
        });
        const expectedError = new FirebaseAuthError(AuthClientErrorCode.USER_NOT_FOUND);
        const data = { localId: ['uid'] };
        const stub = sinon.stub(HttpClient.prototype, 'send').resolves(expectedResult);
        stubs.push(stub);

        const requestHandler = handler.init(mockApp);
        return requestHandler.getAccountInfoByUid('uid')
          .then(() => {
            throw new Error('Unexpected success');
          }, (error) => {
            expect(error).to.deep.include(expectedError);
            expect(stub).to.have.been.calledOnce.and.calledWith(callParams(path, method, data));
          });
      });
      it('should be rejected when the backend returns an error', () => {
        const expectedResult = utils.errorFrom({
          error: {
            message: 'OPERATION_NOT_ALLOWED',
          },
        });
        const expectedError = FirebaseAuthError.fromServerError('OPERATION_NOT_ALLOWED');
        const data = { localId: ['uid'] };

        const stub = sinon.stub(HttpClient.prototype, 'send').rejects(expectedResult);
        stubs.push(stub);

        const requestHandler = handler.init(mockApp);
        return requestHandler.getAccountInfoByUid('uid')
          .then(() => {
            throw new Error('Unexpected success');
          }, (error) => {
            expect(error).to.deep.include(expectedError);
            expect(stub).to.have.been.calledOnce.and.calledWith(callParams(path, method, data));
          });
      });
    });

    describe('getAccountInfoByPhoneNumber', () => {
      const path = handler.path('v1', '/accounts:lookup', 'project_id');
      const method = 'POST';
      it('should be fulfilled given a valid phoneNumber', () => {
        const expectedResult = utils.responseFrom({
          users : [
            {
              localId: 'uid',
              phoneNumber: '+11234567890',
              providerUserInfo: [
                {
                  providerId: 'phone',
                  rawId: '+11234567890',
                  phoneNumber: '+11234567890',
                },
              ],
            },
          ],
        });
        const data = {
          phoneNumber: ['+11234567890'],
        };

        const stub = sinon.stub(HttpClient.prototype, 'send').resolves(expectedResult);
        stubs.push(stub);

        const requestHandler = handler.init(mockApp);
        return requestHandler.getAccountInfoByPhoneNumber('+11234567890')
          .then((result) => {
            expect(result).to.deep.equal(expectedResult.data);
            expect(stub).to.have.been.calledOnce.and.calledWith(callParams(path, method, data));
          });
      });
      it('should be rejected given an invalid phoneNumber', () => {
        const expectedError = new FirebaseAuthError(
          AuthClientErrorCode.INVALID_PHONE_NUMBER);

        const stub = sinon.stub(HttpClient.prototype, 'send');
        stubs.push(stub);
        const requestHandler = handler.init(mockApp);
        return requestHandler.getAccountInfoByPhoneNumber('invalid')
          .then(() => {
            throw new Error('Unexpected success');
          }, (error) => {
            expect(error).to.deep.include(expectedError);
            expect(stub).to.have.not.been.called;
          });

      });
      it('should be rejected when the backend returns an error', () => {
        const expectedResult = utils.responseFrom({
          kind: 'identitytoolkit#GetAccountInfoResponse',
        });
        const expectedError = new FirebaseAuthError(AuthClientErrorCode.USER_NOT_FOUND);
        const data = {
          phoneNumber: ['+11234567890'],
        };

        const stub = sinon.stub(HttpClient.prototype, 'send').resolves(expectedResult);
        stubs.push(stub);

        const requestHandler = handler.init(mockApp);
        return requestHandler.getAccountInfoByPhoneNumber('+11234567890')
          .then(() => {
            throw new Error('Unexpected success');
          }, (error) => {
            expect(error).to.deep.include(expectedError);
            expect(stub).to.have.been.calledOnce.and.calledWith(callParams(path, method, data));
          });
      });
    });

    describe('getAccountInfoByIdentifiers', () => {
      it('should throw when given more than 100 identifiers', () => {
        const identifiers: UserIdentifier[] = [];
        for (let i = 0; i < 101; i++) {
          identifiers.push({ uid: 'id' + i });
        }

        const requestHandler = handler.init(mockApp);
        expect(() => requestHandler.getAccountInfoByIdentifiers(identifiers))
          .to.throw(FirebaseAuthError)
          .with.property('code', 'auth/maximum-user-count-exceeded');
      });

      it('should return no results when given no identifiers', () => {
        const requestHandler = handler.init(mockApp);
        return requestHandler.getAccountInfoByIdentifiers([])
          .then((getUsersResult) => {
            expect(getUsersResult).to.deep.equal({ users: [] });
          });
      });

      it('should return no users when given identifiers that do not exist', () => {
        const expectedResult = utils.responseFrom({ users: [] });
        const stub = sinon.stub(HttpClient.prototype, 'send').resolves(expectedResult);
        stubs.push(stub);

        const requestHandler = handler.init(mockApp);
        const notFoundIds = [{ uid: 'id that doesnt exist' }];
        return requestHandler.getAccountInfoByIdentifiers(notFoundIds)
          .then((getUsersResult) => {
            expect(getUsersResult).to.deep.equal({ users: [] });
          });
      });

      it('should throw when given an invalid uid', () => {
        const requestHandler = handler.init(mockApp);
        expect(() => requestHandler.getAccountInfoByIdentifiers([{ uid: 'too long ' + ('.' as any).repeat(128) }]))
          .to.throw(FirebaseAuthError)
          .with.property('code', 'auth/invalid-uid');
      });

      it('should throw when given an invalid email', () => {
        const requestHandler = handler.init(mockApp);
        expect(() => requestHandler.getAccountInfoByIdentifiers([{ email: 'invalid email addr' }]))
          .to.throw(FirebaseAuthError)
          .with.property('code', 'auth/invalid-email');
      });

      it('should throw when given an invalid phone number', () => {
        const requestHandler = handler.init(mockApp);
        expect(() => requestHandler.getAccountInfoByIdentifiers([{ phoneNumber: 'invalid phone number' }]))
          .to.throw(FirebaseAuthError)
          .with.property('code', 'auth/invalid-phone-number');
      });

      it('should throw when given an invalid provider', () => {
        const requestHandler = handler.init(mockApp);
        expect(() => requestHandler.getAccountInfoByIdentifiers([{ providerUid: '', providerId: '' }]))
          .to.throw(FirebaseAuthError)
          .with.property('code', 'auth/invalid-provider-id');
      });

      it('should throw when given a single bad identifier', () => {
        const identifiers: UserIdentifier[] = [
          { uid: 'valid_id1' },
          { uid: 'valid_id2' },
          { uid: 'invalid id; too long. ' + ('.' as any).repeat(128) },
          { uid: 'valid_id4' },
          { uid: 'valid_id5' },
        ];

        const requestHandler = handler.init(mockApp);
        expect(() => requestHandler.getAccountInfoByIdentifiers(identifiers))
          .to.throw(FirebaseAuthError)
          .with.property('code', 'auth/invalid-uid');
      });

      it('returns users by various identifier types in a single call', async () => {
        const mockUsers = [{
          localId: 'uid1',
          email: 'user1@example.com',
          phoneNumber: '+15555550001',
        }, {
          localId: 'uid2',
          email: 'user2@example.com',
          phoneNumber: '+15555550002',
        }, {
          localId: 'uid3',
          email: 'user3@example.com',
          phoneNumber: '+15555550003',
        }, {
          localId: 'uid4',
          email: 'user4@example.com',
          phoneNumber: '+15555550004',
          providerUserInfo: [{
            providerId: 'google.com',
            rawId: 'google_uid4',
          }],
        }];
        const expectedResult = utils.responseFrom({ users: mockUsers })
        const stub = sinon.stub(HttpClient.prototype, 'send').resolves(expectedResult);
        stubs.push(stub);

        const requestHandler = handler.init(mockApp);
        const users = await requestHandler.getAccountInfoByIdentifiers([
          { uid: 'uid1' },
          { email: 'user2@example.com' },
          { phoneNumber: '+15555550003' },
          { providerId: 'google.com', providerUid: 'google_uid4' },
          { uid: 'this-user-doesnt-exist' },
        ]);

        expect(users).to.deep.equal({ users: mockUsers })
      });
    });

    describe('uploadAccount', () => {
      const path = handler.path('v1', '/accounts:batchCreate', 'project_id');
      const tenantId = handler.supportsTenantManagement ? undefined : TENANT_ID;
      const method = 'POST';
      const nowString = new Date().toUTCString();
      const users = [
        {
          uid: '1234',
          email: 'user@example.com',
          passwordHash: Buffer.from('password'),
          passwordSalt: Buffer.from('salt'),
          displayName: 'Test User',
          photoURL: 'https://www.example.com/1234/photo.png',
          disabled: true,
          metadata: {
            lastSignInTime: nowString,
            creationTime: nowString,
          },
          providerData: [
            {
              uid: 'google1234',
              email: 'user@example.com',
              photoURL: 'https://www.google.com/1234/photo.png',
              displayName: 'Google User',
              providerId: 'google.com',
            },
          ],
          multiFactor: {
            enrolledFactors: [
              {
                uid: 'mfaUid1',
                phoneNumber: '+16505550001',
                displayName: 'Corp phone number',
                factorId: 'phone',
                enrollmentTime: new Date().toUTCString(),
              },
            ],
          },
          customClaims: { admin: true },
          // Tenant ID accepted on user batch upload.
          tenantId,
        },
        {
          uid: '9012',
          email: 'johndoe@example.com',
          passwordHash: Buffer.from('userpass'),
          passwordSalt: Buffer.from('NaCl'),
        },
        { uid: '5678', phoneNumber: '+16505550101' },
      ];
      const options = {
        hash: {
          algorithm: 'BCRYPT' as any,
        },
      };

      it('should throw on invalid options without making an underlying API call', () => {
        const expectedError = new FirebaseAuthError(
          AuthClientErrorCode.INVALID_HASH_ALGORITHM,
          'Unsupported hash algorithm provider "invalid".',
        );
        const invalidOptions = {
          hash: {
            algorithm: 'invalid',
          },
        } as any;
        const stub = sinon.stub(HttpClient.prototype, 'send');
        stubs.push(stub);

        const requestHandler = handler.init(mockApp);
        expect(() => {
          requestHandler.uploadAccount(users, invalidOptions);
        }).to.throw(expectedError.message);
        expect(stub).to.have.not.been.called;
      });

      it('should throw when 1001 UserImportRecords are provided', () => {
        const expectedError = new FirebaseAuthError(
          AuthClientErrorCode.MAXIMUM_USER_COUNT_EXCEEDED,
          'A maximum of 1000 users can be imported at once.',
        );
        const stub = sinon.stub(HttpClient.prototype, 'send');
        stubs.push(stub);

        const testUsers: UserImportRecord[] = [];
        for (let i = 0; i < 1001; i++) {
          testUsers.push({
            uid: 'USER' + i.toString(),
            email: 'user' + i.toString() + '@example.com',
            passwordHash: Buffer.from('password'),
          });
        }

        const requestHandler = handler.init(mockApp);
        expect(() => {
          requestHandler.uploadAccount(testUsers, options);
        }).to.throw(expectedError.message);
        expect(stub).to.have.not.been.called;
      });

      if (handler.name === 'FirebaseTenantRequestHandler') {
        it('should throw when a user record with mismatching tenant ID is provided', () => {
          const mismatchIndex = 34;
          const mismatchTenantId = 'MISMATCHING-TENANT-ID';
          const expectedError = new FirebaseAuthError(
            AuthClientErrorCode.MISMATCHING_TENANT_ID,
            `UserRecord of index "${mismatchIndex}" has mismatching tenant ID "${mismatchTenantId}"`,
          );
          const stub = sinon.stub(HttpClient.prototype, 'send');
          stubs.push(stub);

          const testUsers: UserImportRecord[] = [];
          for (let i = 0; i < 100; i++) {
            testUsers.push({
              uid: 'USER' + i.toString(),
              email: 'user' + i.toString() + '@example.com',
              passwordHash: Buffer.from('password'),
              tenantId: i === mismatchIndex ? mismatchTenantId : undefined,
            });
          }

          const requestHandler = handler.init(mockApp);
          expect(() => {
            requestHandler.uploadAccount(testUsers, options);
          }).to.throw(expectedError.message);
          expect(stub).to.have.not.been.called;
        });
      }

      it('should resolve successfully when 1000 UserImportRecords are provided', () => {
        const expectedResult = utils.responseFrom({});
        const stub = sinon.stub(HttpClient.prototype, 'send').resolves(expectedResult);
        stubs.push(stub);

        const testUsers = [];
        for (let i = 0; i < 1000; i++) {
          testUsers.push({
            uid: 'USER' + i.toString(),
            email: 'user' + i.toString() + '@example.com',
            passwordHash: Buffer.from('password'),
          });
        }

        const requestHandler = handler.init(mockApp);
        const userImportBuilder = new UserImportBuilder(testUsers, options);
        return requestHandler.uploadAccount(testUsers, options)
          .then((result) => {
            expect(result).to.deep.equal(userImportBuilder.buildResponse([]));
            expect(stub).to.have.been.calledOnce.and.calledWith(
              callParams(path, method, userImportBuilder.buildRequest()));
          });

      });

      it('should resolve with expected result on underlying API success', () => {
        const expectedResult = utils.responseFrom({});
        const stub = sinon.stub(HttpClient.prototype, 'send').resolves(expectedResult);
        stubs.push(stub);

        const requestHandler = handler.init(mockApp);
        const userImportBuilder = new UserImportBuilder(users, options);
        return requestHandler.uploadAccount(users, options)
          .then((result) => {
            expect(result).to.deep.equal(userImportBuilder.buildResponse([]));
            expect(stub).to.have.been.calledOnce.and.calledWith(
              callParams(path, method, userImportBuilder.buildRequest()));
          });
      });

      it('should resolve with expected result on underlying API partial succcess', () => {
        const expectedResult = utils.responseFrom({
          error: [
            { index: 0, message: 'Some error occurred' },
            { index: 1, message: 'Another error occurred' },
          ],
        });
        const stub = sinon.stub(HttpClient.prototype, 'send').resolves(expectedResult);
        stubs.push(stub);

        const requestHandler = handler.init(mockApp);
        const userImportBuilder = new UserImportBuilder(users, options);
        return requestHandler.uploadAccount(users, options)
          .then((result) => {
            expectUserImportResult(
              result, userImportBuilder.buildResponse(expectedResult.data.error));
            expect(stub).to.have.been.calledOnce.and.calledWith(
              callParams(path, method, userImportBuilder.buildRequest()));
          });
      });

      it('should resolve without underlying API call when users are processed client side', () => {
        // These users should fail to upload due to invalid phone number and email fields.
        const testUsers = [
          { uid: '1234', phoneNumber: 'invalid' },
          { uid: '5678', email: 'invalid' },
        ] as any;
        const expectedResult = {
          successCount: 0,
          failureCount: 2,
          errors: [
            { index: 0, error: new FirebaseAuthError(AuthClientErrorCode.INVALID_PHONE_NUMBER) },
            { index: 1, error: new FirebaseAuthError(AuthClientErrorCode.INVALID_EMAIL) },
          ],
        };
        const stub = sinon.stub(HttpClient.prototype, 'send');
        stubs.push(stub);

        const requestHandler = handler.init(mockApp);
        return requestHandler.uploadAccount(testUsers)
          .then((result) => {
            expectUserImportResult(result, expectedResult);
            expect(stub).to.have.not.been.called;
          });
      });

      it('should validate underlying users and resolve with expected errors', () => {
        const testUsers = [
          { uid: 'user1', displayName: false },
          { uid: 123 },
          { uid: 'user2', email: 'invalid' },
          { uid: 'user3', phoneNumber: 'invalid' },
          { uid: 'user4', emailVerified: 'invalid' },
          { uid: 'user5', photoURL: 'invalid' },
          { uid: 'user6', disabled: 'invalid' },
          { uid: 'user7', metadata: { creationTime: 'invalid' } },
          { uid: 'user8', metadata: { lastSignInTime: 'invalid' } },
          { uid: 'user9', customClaims: { admin: true, aud: 'bla' } },
          { uid: 'user10', email: 'user10@example.com', passwordHash: 'invalid' },
          { uid: 'user11', email: 'user11@example.com', passwordSalt: 'invalid' },
          { uid: 'user12', providerData: [{ providerId: 'google.com' }] },
          {
            uid: 'user13',
            providerData: [{ providerId: 'google.com', uid: 'RAW_ID', displayName: false }],
          },
          {
            uid: 'user14',
            providerData: [{ providerId: 'google.com', uid: 'RAW_ID', email: 'invalid' }],
          },
          {
            uid: 'user15',
            providerData: [{ providerId: 'google.com', uid: 'RAW_ID', photoURL: 'invalid' }],
          },
          { uid: 'user16', providerData: [{}] },
          { email: 'user17@example.com' },
          {
            uid: 'user18',
            email: 'user18@example.com',
            multiFactor: {
              enrolledFactors: [
                {
                  // Invalid mfa enrollment ID.
                  uid: '',
                  factorId: 'phone',
                  phoneNumber: '+16505550001',
                },
              ],
            },
          },
          {
            uid: 'user19',
            email: 'user19@example.com',
            multiFactor: {
              enrolledFactors: [
                {
                  uid: 'mfaUid1',
                  factorId: 'phone',
                  // Invalid display name.
                  displayName: false,
                  phoneNumber: '+16505550002',
                },
              ],
            },
          },
          {
            uid: 'user20',
            email: 'user20@example.com',
            multiFactor: {
              enrolledFactors: [
                {
                  uid: 'mfaUid2',
                  factorId: 'phone',
                  // Invalid enrollment time.
                  enrollmentTime: 'invalid',
                  phoneNumber: '+16505550003',
                },
              ],
            },
          },
          {
            uid: 'user21',
            email: 'user21@example.com',
            multiFactor: {
              enrolledFactors: [
                {
                  uid: 'mfaUid3',
                  factorId: 'phone',
                  // Invalid phone number
                  phoneNumber: 'invalid',
                  enrollmentTime: new Date().toUTCString(),
                },
              ],
            },
          },
          {
            uid: 'user22',
            email: 'user22@example.com',
            multiFactor: {
              enrolledFactors: [
                {
                  uid: 'mfaUid3',
                  // Invalid factor ID.
                  factorId: 'invalid',
                  phoneNumber: '+16505550003',
                  enrollmentTime: new Date().toUTCString(),
                },
              ],
            },
          },
        ] as any;
        const validOptions = {
          hash: {
            algorithm: 'BCRYPT',
          },
        } as any;
        const expectedResult = {
          successCount: 0,
          failureCount: testUsers.length,
          errors: [
            { index: 0, error: new FirebaseAuthError(AuthClientErrorCode.INVALID_DISPLAY_NAME) },
            { index: 1, error: new FirebaseAuthError(AuthClientErrorCode.INVALID_UID) },
            { index: 2, error: new FirebaseAuthError(AuthClientErrorCode.INVALID_EMAIL) },
            { index: 3, error: new FirebaseAuthError(AuthClientErrorCode.INVALID_PHONE_NUMBER) },
            { index: 4, error: new FirebaseAuthError(AuthClientErrorCode.INVALID_EMAIL_VERIFIED) },
            { index: 5, error: new FirebaseAuthError(AuthClientErrorCode.INVALID_PHOTO_URL) },
            { index: 6, error: new FirebaseAuthError(AuthClientErrorCode.INVALID_DISABLED_FIELD) },
            { index: 7, error: new FirebaseAuthError(AuthClientErrorCode.INVALID_CREATION_TIME) },
            { index: 8, error: new FirebaseAuthError(AuthClientErrorCode.INVALID_LAST_SIGN_IN_TIME) },
            {
              index: 9,
              error: new FirebaseAuthError(
                AuthClientErrorCode.FORBIDDEN_CLAIM,
                'Developer claim "aud" is reserved and cannot be specified.',
              ),
            },
            { index: 10, error: new FirebaseAuthError(AuthClientErrorCode.INVALID_PASSWORD_HASH) },
            { index: 11, error: new FirebaseAuthError(AuthClientErrorCode.INVALID_PASSWORD_SALT) },
            {
              index: 12,
              error: new FirebaseAuthError(
                AuthClientErrorCode.INVALID_UID,
                'The provider "uid" for "google.com" must be a valid non-empty string.',
              ),
            },
            {
              index: 13,
              error: new FirebaseAuthError(
                AuthClientErrorCode.INVALID_DISPLAY_NAME,
                'The provider "displayName" for "google.com" must be a valid string.',
              ),
            },
            {
              index: 14,
              error: new FirebaseAuthError(
                AuthClientErrorCode.INVALID_EMAIL,
                'The provider "email" for "google.com" must be a valid email string.',
              ),
            },
            {
              index: 15,
              error: new FirebaseAuthError(
                AuthClientErrorCode.INVALID_PHOTO_URL,
                'The provider "photoURL" for "google.com" must be a valid URL string.',
              ),
            },
            { index: 16, error: new FirebaseAuthError(AuthClientErrorCode.INVALID_PROVIDER_ID) },
            { index: 17, error: new FirebaseAuthError(AuthClientErrorCode.INVALID_UID) },
            {
              index: 18,
              error: new FirebaseAuthError(
                AuthClientErrorCode.INVALID_UID,
                'The second factor "uid" must be a valid non-empty string.',
              ),
            },
            {
              index: 19,
              error: new FirebaseAuthError(
                AuthClientErrorCode.INVALID_DISPLAY_NAME,
                'The second factor "displayName" for "mfaUid1" must be a valid string.',
              ),
            },
            {
              index: 20,
              error: new FirebaseAuthError(
                AuthClientErrorCode.INVALID_ENROLLMENT_TIME,
                'The second factor "enrollmentTime" for "mfaUid2" must be a valid UTC date string.',
              ),
            },
            {
              index: 21,
              error: new FirebaseAuthError(
                AuthClientErrorCode.INVALID_PHONE_NUMBER,
                'The second factor "phoneNumber" for "mfaUid3" must be a non-empty ' +
                'E.164 standard compliant identifier string.',
              ),
            },
            {
              index: 22,
              error: new FirebaseAuthError(
                AuthClientErrorCode.UNSUPPORTED_SECOND_FACTOR,
                `Unsupported second factor "${JSON.stringify(testUsers[22].multiFactor.enrolledFactors[0])}" provided.`,
              ),
            },
          ],
        };
        const stub = sinon.stub(HttpClient.prototype, 'send');
        stubs.push(stub);

        const requestHandler = handler.init(mockApp);
        return requestHandler.uploadAccount(testUsers, validOptions)
          .then((result) => {
            expectUserImportResult(result, expectedResult);
            expect(stub).to.have.not.been.called;
          });
      });

      it('should be rejected when the backend returns an error', () => {
        const expectedServerError = utils.errorFrom({
          error: {
            message: 'INTERNAL_ERROR',
          },
        });
        const expectedError = new FirebaseAuthError(
          AuthClientErrorCode.INTERNAL_ERROR,
          'An internal error has occurred. Raw server response: ' +
          `"${JSON.stringify(expectedServerError.response.data)}"`,
        );
        const stub = sinon.stub(HttpClient.prototype, 'send').rejects(expectedServerError);
        stubs.push(stub);

        const requestHandler = handler.init(mockApp);
        const userImportBuilder = new UserImportBuilder(users, options);
        return requestHandler.uploadAccount(users, options)
          .then(() => {
            throw new Error('Unexpected success');
          }, (error) => {
            expect(error).to.deep.include(expectedError);
            expect(stub).to.have.been.calledOnce.and.calledWith(
              callParams(path, method, userImportBuilder.buildRequest()));
          });
      });
    });

    describe('downloadAccount', () => {
      const path = handler.path('v1', '/accounts:batchGet', 'project_id');
      const method = 'GET';
      const nextPageToken = 'PAGE_TOKEN';
      const maxResults = 500;
      const expectedResult = utils.responseFrom({
        users : [
          { localId: 'uid1' },
          { localId: 'uid2' },
        ],
        nextPageToken: 'NEXT_PAGE_TOKEN',
      });
      it('should be fulfilled given a valid parameters', () => {
        const data = {
          maxResults,
          nextPageToken,
        };
        const stub = sinon.stub(HttpClient.prototype, 'send').resolves(expectedResult);
        stubs.push(stub);

        const requestHandler = handler.init(mockApp);
        return requestHandler.downloadAccount(maxResults, nextPageToken)
          .then((result) => {
            expect(result).to.deep.equal(expectedResult.data);
            expect(stub).to.have.been.calledOnce.and.calledWith(callParams(path, method, data));
          });
      });
      it('should be fulfilled with empty user array when no users exist', () => {
        const data = {
          maxResults,
          nextPageToken,
        };

        const stub = sinon.stub(HttpClient.prototype, 'send').resolves(utils.responseFrom({}));
        stubs.push(stub);

        const requestHandler = handler.init(mockApp);
        return requestHandler.downloadAccount(maxResults, nextPageToken)
          .then((result) => {
            expect(result).to.deep.equal({ users: [] });
            expect(stub).to.have.been.calledOnce.and.calledWith(callParams(path, method, data));
          });
      });
      it('should be fulfilled given no parameters', () => {
        // Default maxResults should be used.
        const data = {
          maxResults: 1000,
        };
        const stub = sinon.stub(HttpClient.prototype, 'send').resolves(expectedResult);
        stubs.push(stub);

        const requestHandler = handler.init(mockApp);
        return requestHandler.downloadAccount()
          .then((result) => {
            expect(result).to.deep.equal(expectedResult.data);
            expect(stub).to.have.been.calledOnce.and.calledWith(callParams(path, method, data));
          });
      });
      it('should be rejected given an invalid maxResults', () => {
        const expectedError = new FirebaseAuthError(
          AuthClientErrorCode.INVALID_ARGUMENT,
          'Required "maxResults" must be a positive integer that does not ' +
          'exceed 1000.',
        );

        const requestHandler = handler.init(mockApp);
        return requestHandler.downloadAccount(1001, nextPageToken)
          .then(() => {
            throw new Error('Unexpected success');
          }, (error) => {
            expect(error).to.deep.include(expectedError);
          });
      });
      it('should be rejected given an invalid next page token', () => {
        const expectedError = new FirebaseAuthError(
          AuthClientErrorCode.INVALID_PAGE_TOKEN,
        );

        const requestHandler = handler.init(mockApp);
        return requestHandler.downloadAccount(maxResults, '')
          .then(() => {
            throw new Error('Unexpected success');
          }, (error) => {
            expect(error).to.deep.include(expectedError);
          });
      });
      it('should be rejected when the backend returns an error', () => {
        const expectedServerError = utils.errorFrom({
          error: {
            message: 'INVALID_PAGE_SELECTION',
          },
        });
        const expectedError = FirebaseAuthError.fromServerError('INVALID_PAGE_SELECTION');
        const data = {
          maxResults,
          nextPageToken,
        };
        const stub = sinon.stub(HttpClient.prototype, 'send').rejects(expectedServerError);
        stubs.push(stub);

        const requestHandler = handler.init(mockApp);
        return requestHandler.downloadAccount(maxResults, nextPageToken)
          .then(() => {
            throw new Error('Unexpected success');
          }, (error) => {
            expect(error).to.deep.include(expectedError);
            expect(stub).to.have.been.calledOnce.and.calledWith(callParams(path, method, data));
          });
      });
    });

    describe('deleteAccount', () => {
      const path = handler.path('v1', '/accounts:delete', 'project_id');
      const method = 'POST';
      it('should be fulfilled given a valid localId', () => {
        const expectedResult = utils.responseFrom({
          kind: 'identitytoolkit#DeleteAccountResponse',
        });
        const data = { localId: 'uid' };

        const stub = sinon.stub(HttpClient.prototype, 'send').resolves(expectedResult);
        stubs.push(stub);
        const requestHandler = handler.init(mockApp);
        return requestHandler.deleteAccount('uid')
          .then((result) => {
            expect(result).to.deep.equal(expectedResult.data);
            expect(stub).to.have.been.calledOnce.and.calledWith(callParams(path, method, data));
          });
      });
      it('should be rejected when the backend returns an error', () => {
        const expectedResult = utils.errorFrom({
          error: {
            message: 'OPERATION_NOT_ALLOWED',
          },
        });
        const expectedError = FirebaseAuthError.fromServerError('OPERATION_NOT_ALLOWED');
        const data = { localId: 'uid' };

        const stub = sinon.stub(HttpClient.prototype, 'send').rejects(expectedResult);
        stubs.push(stub);
        const requestHandler = handler.init(mockApp);
        return requestHandler.deleteAccount('uid')
          .then(() => {
            throw new Error('Unexpected success');
          }, (error) => {
            expect(error).to.deep.include(expectedError);
            expect(stub).to.have.been.calledOnce.and.calledWith(callParams(path, method, data));
          });
      });
    });

    describe('deleteAccounts', () => {
      const path = handler.path('v1', '/accounts:batchDelete', 'project_id');
      const method = 'POST';

      it('should succeed given an empty list', () => {
        const requestHandler = handler.init(mockApp);
        return requestHandler.deleteAccounts([], /*force=*/true)
          .then((deleteUsersResult) => {
            expect(deleteUsersResult).to.deep.equal({});
          });
      });

      it('should be rejected when given more than 1000 identifiers', () => {
        const ids: string[] = [];
        for (let i = 0; i < 1001; i++) {
          ids.push('id' + i);
        }

        const requestHandler = handler.init(mockApp);
        expect(() => requestHandler.deleteAccounts(ids, /*force=*/true))
          .to.throw(FirebaseAuthError)
          .with.property('code', 'auth/maximum-user-count-exceeded');
      });

      it('should immediately fail given an invalid id', () => {
        const requestHandler = handler.init(mockApp);
        expect(() => requestHandler.deleteAccounts(['too long ' + ('.' as any).repeat(128)], /*force=*/true))
          .to.throw(FirebaseAuthError)
          .with.property('code', 'auth/invalid-uid');
      });

      it('should be fulfilled given valid uids', async () => {
        const expectedResult = utils.responseFrom({});
        const data = { localIds: ['uid1', 'uid2', 'uid3'], force: true };

        const stub = sinon.stub(HttpClient.prototype, 'send').resolves(expectedResult);
        stubs.push(stub);
        const requestHandler = handler.init(mockApp);
        return requestHandler.deleteAccounts(['uid1', 'uid2', 'uid3'], /*force=*/true)
          .then((result) => {
            expect(result).to.deep.equal({})
            expect(stub).to.have.been.calledOnce.and.calledWith(callParams(path, method, data));
          });
      });
    });

    describe('updateExistingAccount', () => {
      const now = new Date('2019-10-25T04:30:52.000Z');
      const path = handler.path('v1', '/accounts:update', 'project_id');
      const method = 'POST';
      const uid = '12345678';
      const validData: UpdateRequest = {
        displayName: 'John Doe',
        email: 'user@example.com',
        emailVerified: true,
        disabled: false,
        photoURL: 'http://localhost/1234/photo.png',
        password: 'password',
        phoneNumber: '+11234567890',
        multiFactor: {
          enrolledFactors: [
            {
              uid: 'enrolledSecondFactor1',
              phoneNumber: '+16505557348',
              displayName: 'Spouse\'s phone number',
              factorId: 'phone',
              enrollmentTime: now.toUTCString(),
            } as UpdateMultiFactorInfoRequest,
            {
              uid: 'enrolledSecondFactor2',
              phoneNumber: '+16505551000',
              factorId: 'phone',
            } as UpdateMultiFactorInfoRequest,
            {
              // No error should be thrown when no uid is specified.
              phoneNumber: '+16505551234',
              factorId: 'phone',
            } as UpdateMultiFactorInfoRequest,
          ],
        },
      };
      (validData as any).ignoredProperty = 'value';
      const expectedValidData = {
        localId: uid,
        displayName: 'John Doe',
        email: 'user@example.com',
        emailVerified: true,
        disableUser: false,
        photoUrl: 'http://localhost/1234/photo.png',
        password: 'password',
        phoneNumber: '+11234567890',
        mfa: {
          enrollments: [
            {
              mfaEnrollmentId: 'enrolledSecondFactor1',
              phoneInfo: '+16505557348',
              displayName: 'Spouse\'s phone number',
              enrolledAt: now.toISOString(),
            },
            {
              mfaEnrollmentId: 'enrolledSecondFactor2',
              phoneInfo: '+16505551000',
            },
            {
              phoneInfo: '+16505551234',
            },
          ],
        },
      };
      // Valid request to delete photoURL and displayName.
      const validDeleteData = deepCopy(validData);
      validDeleteData.displayName = null;
      validDeleteData.photoURL = null;
      delete validDeleteData.multiFactor;
      const expectedValidDeleteData = {
        localId: uid,
        email: 'user@example.com',
        emailVerified: true,
        disableUser: false,
        password: 'password',
        phoneNumber: '+11234567890',
        deleteAttribute: ['DISPLAY_NAME', 'PHOTO_URL'],
      };
      // Valid request to delete phoneNumber.
      const validDeletePhoneNumberData = deepCopy(validData);
      validDeletePhoneNumberData.phoneNumber = null;
      delete validDeletePhoneNumberData.multiFactor;
      const expectedValidDeletePhoneNumberData = {
        localId: uid,
        displayName: 'John Doe',
        email: 'user@example.com',
        emailVerified: true,
        disableUser: false,
        photoUrl: 'http://localhost/1234/photo.png',
        password: 'password',
        deleteProvider: ['phone'],
      };
      // Valid request to delete all second factors.
      const expectedValidDeleteMfaData = {
        localId: uid,
        mfa: {},
      };
      const invalidData = {
        uid,
        email: 'user@invalid@',
      };
      const invalidPhoneNumberData = {
        uid,
        phoneNumber: 'invalid',
      };

      it('should be fulfilled given a valid localId', () => {
        // Successful result server response.
        const expectedResult = utils.responseFrom({
          kind: 'identitytoolkit#SetAccountInfoResponse',
          localId: uid,
        });
        const stub = sinon.stub(HttpClient.prototype, 'send').resolves(expectedResult);
        stubs.push(stub);

        const requestHandler = handler.init(mockApp);
        // Send empty update request.
        return requestHandler.updateExistingAccount(uid, {})
          .then((returnedUid: string) => {
            // uid should be returned.
            expect(returnedUid).to.be.equal(uid);
            // Confirm expected rpc request parameters sent.
            expect(stub).to.have.been.calledOnce.and.calledWith(
              callParams(path, method, { localId: uid }));
          });
      });

      it('should be fulfilled given valid parameters', () => {
        // Successful result server response.
        const expectedResult = utils.responseFrom({
          kind: 'identitytoolkit#SetAccountInfoResponse',
          localId: uid,
        });
        const stub = sinon.stub(HttpClient.prototype, 'send').resolves(expectedResult);
        stubs.push(stub);

        const requestHandler = handler.init(mockApp);
        // Send update request with all possible valid parameters.
        return requestHandler.updateExistingAccount(uid, validData)
          .then((returnedUid: string) => {
            // uid should be returned.
            expect(returnedUid).to.be.equal(uid);
            // Confirm expected rpc request parameters sent.
            expect(stub).to.have.been.calledOnce.and.calledWith(
              callParams(path, method, expectedValidData));
          });
      });

      it('should be fulfilled given valid profile parameters to delete', () => {
        // Successful result server response.
        const expectedResult = utils.responseFrom({
          kind: 'identitytoolkit#SetAccountInfoResponse',
          localId: uid,
        });
        const stub = sinon.stub(HttpClient.prototype, 'send').resolves(expectedResult);
        stubs.push(stub);

        const requestHandler = handler.init(mockApp);
        // Send update request to delete display name and photo URL.
        return requestHandler.updateExistingAccount(uid, validDeleteData)
          .then((returnedUid: string) => {
            // uid should be returned.
            expect(returnedUid).to.be.equal(uid);
            // Confirm expected rpc request parameters sent. In this case, displayName
            // and photoURL removed from request and deleteAttribute added.
            expect(stub).to.have.been.calledOnce.and.calledWith(
              callParams(path, method, expectedValidDeleteData));
          });
      });

      it('should be fulfilled given phone number to delete', () => {
        // Successful result server response.
        const expectedResult = utils.responseFrom({
          kind: 'identitytoolkit#SetAccountInfoResponse',
          localId: uid,
        });

        const stub = sinon.stub(HttpClient.prototype, 'send').resolves(expectedResult);
        stubs.push(stub);

        const requestHandler = handler.init(mockApp);
        // Send update request to delete phone number.
        return requestHandler.updateExistingAccount(uid, validDeletePhoneNumberData)
          .then((returnedUid: string) => {
            // uid should be returned.
            expect(returnedUid).to.be.equal(uid);
            // Confirm expected rpc request parameters sent. In this case, phoneNumber
            // removed from request and deleteProvider added.
            expect(stub).to.have.been.calledOnce.and.calledWith(
              callParams(path, method, expectedValidDeletePhoneNumberData));
          });
      });

      it('should be fulfilled given null enrolled factors', () => {
        // Successful result server response.
        const expectedResult = utils.responseFrom({
          localId: uid,
        });

        const stub = sinon.stub(HttpClient.prototype, 'send').resolves(expectedResult);
        stubs.push(stub);

        const requestHandler = handler.init(mockApp);
        // Send update request to delete enrolled factors.
        return requestHandler.updateExistingAccount(uid, { multiFactor: { enrolledFactors: null } })
          .then((returnedUid: string) => {
            // uid should be returned.
            expect(returnedUid).to.be.equal(uid);
            // Confirm expected rpc request parameters sent. In this case, mfa is set to
            // an empty object.
            expect(stub).to.have.been.calledOnce.and.calledWith(
              callParams(path, method, expectedValidDeleteMfaData));
          });
      });

      it('should be fulfilled given empty enrolled factors array', () => {
        // Successful result server response.
        const expectedResult = utils.responseFrom({
          localId: uid,
        });

        const stub = sinon.stub(HttpClient.prototype, 'send').resolves(expectedResult);
        stubs.push(stub);

        const requestHandler = handler.init(mockApp);
        // Send update request to delete enrolled factors.
        return requestHandler.updateExistingAccount(uid, { multiFactor: { enrolledFactors: [] } })
          .then((returnedUid: string) => {
            // uid should be returned.
            expect(returnedUid).to.be.equal(uid);
            // Confirm expected rpc request parameters sent. In this case, mfa is set to
            // an empty object.
            expect(stub).to.have.been.calledOnce.and.calledWith(
              callParams(path, method, expectedValidDeleteMfaData));
          });
      });

      it('should be rejected given invalid parameters such as email', () => {
        // Expected error when an invalid email is provided.
        const expectedError = new FirebaseAuthError(AuthClientErrorCode.INVALID_EMAIL);
        const requestHandler = handler.init(mockApp);
        // Send update request with invalid email.
        return requestHandler.updateExistingAccount(uid, invalidData)
          .then(() => {
            throw new Error('Unexpected success');
          }, (error) => {
            // Invalid email error should be thrown.
            expect(error).to.deep.include(expectedError);
          });
      });

      const unsupportedSecondFactor = {
        uid: 'enrolledSecondFactor1',
        secret: 'SECRET',
        displayName: 'Google Authenticator on personal phone',
        factorId: 'totp',
      };
      const invalidSecondFactorTests: InvalidMultiFactorUpdateTest[] = [
        {
          name: 'invalid second factor uid',
          error: new FirebaseAuthError(
            AuthClientErrorCode.INVALID_UID,
            'The second factor "uid" must be a valid non-empty string.',
          ),
          secondFactor: {
            uid: ['enrollmentId'],
            phoneNumber: '+16505557348',
            displayName: 'Spouse\'s phone number',
            factorId: 'phone',
          },
        },
        {
          name: 'invalid second factor display name',
          error: new FirebaseAuthError(
            AuthClientErrorCode.INVALID_DISPLAY_NAME,
            'The second factor "displayName" for "enrolledSecondFactor1" must be a valid string.',
          ),
          secondFactor: {
            uid: 'enrolledSecondFactor1',
            phoneNumber: '+16505557348',
            displayName: ['Corp phone number'],
            factorId: 'phone',
          },
        },
        {
          name: 'invalid second factor phone number',
          error: new FirebaseAuthError(
            AuthClientErrorCode.INVALID_PHONE_NUMBER,
            'The second factor "phoneNumber" for "enrolledSecondFactor1" must be a non-empty ' +
            'E.164 standard compliant identifier string.'),
          secondFactor: {
            uid: 'enrolledSecondFactor1',
            phoneNumber: 'invalid',
            displayName: 'Spouse\'s phone number',
            factorId: 'phone',
          },
        },
        {
          name: 'invalid second factor enrollment time',
          error: new FirebaseAuthError(
            AuthClientErrorCode.INVALID_ENROLLMENT_TIME,
            'The second factor "enrollmentTime" for "enrolledSecondFactor1" must be a valid ' +
            'UTC date string.'),
          secondFactor: {
            uid: 'enrolledSecondFactor1',
            phoneNumber: '+16505557348',
            displayName: 'Spouse\'s phone number',
            factorId: 'phone',
            enrollmentTime: 'invalid',
          },
        },
        {
          name: 'invalid second factor type',
          error: new FirebaseAuthError(
            AuthClientErrorCode.UNSUPPORTED_SECOND_FACTOR,
            `Unsupported second factor "${JSON.stringify(unsupportedSecondFactor)}" provided.`),
          secondFactor: unsupportedSecondFactor,
        },
      ];
      invalidSecondFactorTests.forEach((invalidSecondFactorTest) => {
        it(`should be rejected given an ${invalidSecondFactorTest.name}`, () => {
          const invalidSecondFactorData = {
            multiFactor: {
              enrolledFactors: [invalidSecondFactorTest.secondFactor],
            },
          };
          const requestHandler = handler.init(mockApp);
          return requestHandler.updateExistingAccount(uid, invalidSecondFactorData as any)
            .then(() => {
              throw new Error('Unexpected success');
            }, (error) => {
              // Expected error should be thrown.
              expect(error).to.deep.include(invalidSecondFactorTest.error);
            });
        });
      });

      it('should be rejected given a tenant ID to modify', () => {
        const dataWithModifiedTenantId = deepCopy(validData);
        (dataWithModifiedTenantId as any).tenantId = 'MODIFIED-TENANT-ID';
        // Expected error when a tenant ID is provided.
        const expectedError = new FirebaseAuthError(
          AuthClientErrorCode.INVALID_ARGUMENT,
          '"tenantId" is an invalid "UpdateRequest" property.',
        );
        const requestHandler = handler.init(mockApp);
        // Send update request with tenant ID.
        return requestHandler.updateExistingAccount(uid, dataWithModifiedTenantId)
          .then(() => {
            throw new Error('Unexpected success');
          }, (error) => {
            // Invalid argument error should be thrown.
            expect(error).to.deep.include(expectedError);
          });
      });

      it('should be rejected given invalid parameters such as phoneNumber', () => {
        // Expected error when an invalid phone number is provided.
        const expectedError = new FirebaseAuthError(AuthClientErrorCode.INVALID_PHONE_NUMBER);
        const requestHandler = handler.init(mockApp);
        // Send update request with invalid phone number.
        return requestHandler.updateExistingAccount(uid, invalidPhoneNumberData)
          .then(() => {
            throw new Error('Unexpected success');
          }, (error) => {
            // Invalid phone number error should be thrown.
            expect(error).to.deep.include(expectedError);
          });
      });

      it('should be rejected when the backend returns an error', () => {
        // Backend returned error.
        const expectedError = FirebaseAuthError.fromServerError('OPERATION_NOT_ALLOWED');
        const expectedResult = utils.errorFrom({
          error: {
            message: 'OPERATION_NOT_ALLOWED',
          },
        });

        const stub = sinon.stub(HttpClient.prototype, 'send').rejects(expectedResult);
        stubs.push(stub);

        const requestHandler = handler.init(mockApp);
        return requestHandler.updateExistingAccount(uid, validData)
          .then(() => {
            throw new Error('Unexpected success');
          }, (error) => {
            expect(error).to.deep.include(expectedError);
            expect(stub).to.have.been.calledOnce.and.calledWith(
              callParams(path, method, expectedValidData));
          });
      });
    });

    describe('setCustomUserClaims', () => {
      const path = handler.path('v1', '/accounts:update', 'project_id');
      const method = 'POST';
      const uid = '12345678';
      const claims = { admin: true, groupId: '1234' };
      const expectedValidData = {
        localId: uid,
        customAttributes: JSON.stringify(claims),
      };
      const expectedEmptyClaimsData = {
        localId: uid,
        customAttributes: JSON.stringify({}),
      };
      const expectedResult = utils.responseFrom({
        localId: uid,
      });

      it('should be fulfilled given a valid localId and customAttributes', () => {
        // Successful result server response.
        const stub = sinon.stub(HttpClient.prototype, 'send').resolves(expectedResult);
        stubs.push(stub);

        const requestHandler = handler.init(mockApp);
        // Send empty request.
        return requestHandler.setCustomUserClaims(uid, claims)
          .then((returnedUid: string) => {
            // uid should be returned.
            expect(returnedUid).to.be.equal(uid);
            // Confirm expected rpc request parameters sent.
            expect(stub).to.have.been.calledOnce.and.calledWith(
              callParams(path, method, expectedValidData));
          });
      });

      it('should be fulfilled given valid localId and null claims', () => {
        // Successful result server response.
        const stub = sinon.stub(HttpClient.prototype, 'send').resolves(expectedResult);
        stubs.push(stub);

        const requestHandler = handler.init(mockApp);
        // Send request to delete custom claims.
        return requestHandler.setCustomUserClaims(uid, null)
          .then((returnedUid: string) => {
            // uid should be returned.
            expect(returnedUid).to.be.equal(uid);
            // Confirm expected rpc request parameters sent.
            expect(stub).to.have.been.calledOnce.and.calledWith(
              callParams(path, method, expectedEmptyClaimsData));
          });
      });

      it('should be rejected given invalid parameters such as uid', () => {
        // Expected error when an invalid uid is provided.
        const expectedError = new FirebaseAuthError(AuthClientErrorCode.INVALID_UID);
        const requestHandler = handler.init(mockApp);
        // Send request with invalid uid.
        return requestHandler.setCustomUserClaims('', claims)
          .then(() => {
            throw new Error('Unexpected success');
          }, (error) => {
            // Invalid uid error should be thrown.
            expect(error).to.deep.include(expectedError);
          });
      });

      it('should be rejected given invalid parameters such as customClaims', () => {
        // Expected error when invalid claims are provided.
        const expectedError = new FirebaseAuthError(
          AuthClientErrorCode.INVALID_ARGUMENT,
          'CustomUserClaims argument must be an object or null.',
        );
        const requestHandler = handler.init(mockApp);
        // Send request with invalid claims.
        return requestHandler.setCustomUserClaims(uid, 'invalid' as any)
          .then(() => {
            throw new Error('Unexpected success');
          }, (error) => {
            // Invalid argument error should be thrown.
            expect(error).to.deep.include(expectedError);
          });
      });

      it('should be rejected given customClaims with blacklisted claims', () => {
        // Expected error when invalid claims are provided.
        const expectedError = new FirebaseAuthError(
          AuthClientErrorCode.FORBIDDEN_CLAIM,
          'Developer claim "aud" is reserved and cannot be specified.',
        );
        const requestHandler = handler.init(mockApp);
        const blacklistedClaims = { admin: true, aud: 'bla' };
        // Send request with blacklisted claims.
        return requestHandler.setCustomUserClaims(uid, blacklistedClaims)
          .then(() => {
            throw new Error('Unexpected success');
          }, (error) => {
            // Forbidden claims error should be thrown.
            expect(error).to.deep.include(expectedError);
          });
      });

      it('should be rejected when the backend returns an error', () => {
        // Backend returned error.
        const expectedError = FirebaseAuthError.fromServerError('USER_NOT_FOUND');
        const expectedServerError = utils.errorFrom({
          error: {
            message: 'USER_NOT_FOUND',
          },
        });
        const stub = sinon.stub(HttpClient.prototype, 'send').rejects(expectedServerError);
        stubs.push(stub);

        const requestHandler = handler.init(mockApp);
        return requestHandler.setCustomUserClaims(uid, claims)
          .then(() => {
            throw new Error('Unexpected success');
          }, (error) => {
            expect(error).to.deep.include(expectedError);
            expect(stub).to.have.been.calledOnce.and.calledWith(
              callParams(path, method, expectedValidData));
          });
      });
    });

    describe('revokeRefreshTokens', () => {
      const path = handler.path('v1', '/accounts:update', 'project_id');
      const method = 'POST';
      const uid = '12345678';
      const now = new Date();
      const expectedResult = utils.responseFrom({
        localId: uid,
      });
      let clock: sinon.SinonFakeTimers;

      beforeEach(() => {
        clock = sinon.useFakeTimers(now.getTime());
      });

      afterEach(() => {
        clock.restore();
      });

      it('should be fulfilled given a valid uid', () => {
        const requestData = {
          localId: uid,
          // Current time should be passed, rounded down.
          validSince: Math.floor((now.getTime() + 5000) / 1000),
        };
        const stub = sinon.stub(HttpClient.prototype, 'send').resolves(expectedResult);
        stubs.push(stub);

        const requestHandler = handler.init(mockApp);
        // Simulate 5 seconds passed.
        clock.tick(5000);
        return requestHandler.revokeRefreshTokens(uid)
          .then((returnedUid: string) => {
            expect(returnedUid).to.be.equal(uid);
            expect(stub).to.have.been.calledOnce.and.calledWith(callParams(path, method, requestData));
          });
      });

      it('should be rejected given an invalid uid', () => {
        const expectedError = new FirebaseAuthError(AuthClientErrorCode.INVALID_UID);
        const invalidUid: any = { localId: uid };

        const requestHandler = handler.init(mockApp);
        return requestHandler.revokeRefreshTokens(invalidUid as any)
          .then(() => {
            throw new Error('Unexpected success');
          }, (error) => {
            // Invalid uid error should be thrown.
            expect(error).to.deep.include(expectedError);
          });
      });

      it('should be rejected when the backend returns an error', () => {
        // Backend returned error.
        const expectedError = FirebaseAuthError.fromServerError('USER_NOT_FOUND');
        const expectedServerError = utils.errorFrom({
          error: {
            message: 'USER_NOT_FOUND',
          },
        });
        const requestData = {
          localId: uid,
          validSince: Math.floor((now.getTime() + 5000) / 1000),
        };
        const stub = sinon.stub(HttpClient.prototype, 'send').rejects(expectedServerError);
        stubs.push(stub);

        const requestHandler = handler.init(mockApp);
        // Simulate 5 seconds passed.
        clock.tick(5000);
        return requestHandler.revokeRefreshTokens(uid)
          .then(() => {
            throw new Error('Unexpected success');
          }, (error) => {
            expect(error).to.deep.include(expectedError);
            expect(stub).to.have.been.calledOnce.and.calledWith(callParams(path, method, requestData));
          });
      });
    });

    describe('createNewAccount', () => {
      describe('with uid specified', () => {
        const path = handler.path('v1', '/accounts', 'project_id');
        const method = 'POST';
        const uid = '12345678';
        const validData = {
          uid,
          displayName: 'John Doe',
          email: 'user@example.com',
          emailVerified: true,
          disabled: false,
          photoURL: 'http://localhost/1234/photo.png',
          password: 'password',
          phoneNumber: '+11234567890',
          ignoredProperty: 'value',
          multiFactor: {
            enrolledFactors: [
              {
                phoneNumber: '+16505557348',
                displayName: 'Spouse\'s phone number',
                factorId: 'phone',
              },
              {
                phoneNumber: '+16505551000',
                factorId: 'phone',
              },
            ],
          },
        };
        const expectedValidData = {
          localId: uid,
          displayName: 'John Doe',
          email: 'user@example.com',
          emailVerified: true,
          disabled: false,
          photoUrl: 'http://localhost/1234/photo.png',
          password: 'password',
          phoneNumber: '+11234567890',
          mfaInfo: [
            {
              phoneInfo: '+16505557348',
              displayName: 'Spouse\'s phone number',
            },
            {
              phoneInfo: '+16505551000',
            },
          ],
        };
        const invalidData = {
          uid,
          email: 'user@invalid@',
        };
        const invalidPhoneNumberData = {
          uid,
          phoneNumber: 'invalid',
        };
        const emptyRequest = {
          localId: uid,
        };
        it('should be fulfilled given a valid localId', () => {
          // Successful uploadAccount response.
          const expectedResult = utils.responseFrom({
            kind: 'identitytoolkit#SignupNewUserResponse',
            localId: uid,
          });
          const stub = sinon.stub(HttpClient.prototype, 'send').resolves(expectedResult);
          stubs.push(stub);

          const requestHandler = handler.init(mockApp);
          // Send empty create new account request with only a uid provided.
          return requestHandler.createNewAccount({ uid })
            .then((returnedUid: string) => {
              // uid should be returned.
              expect(returnedUid).to.be.equal(uid);
              // Confirm expected rpc request parameters sent.
              expect(stub).to.have.been.calledOnce.and.calledWith(callParams(path, method, emptyRequest));
            });
        });

        it('should be fulfilled given valid parameters', () => {
          const expectedResult = utils.responseFrom({
            kind: 'identitytoolkit#SignupNewUserResponse',
            localId: uid,
          });
          const stub = sinon.stub(HttpClient.prototype, 'send').resolves(expectedResult);
          stubs.push(stub);

          const requestHandler = handler.init(mockApp);
          // Create a new account with all possible valid data.
          return requestHandler.createNewAccount(validData)
            .then((returnedUid: string) => {
              // uid should be returned.
              expect(returnedUid).to.be.equal(uid);
              // Confirm expected rpc request parameters sent.
              expect(stub).to.have.been.calledOnce.and.calledWith(
                callParams(path, method, expectedValidData));
            });
        });

        it('should be rejected given invalid parameters such as email', () => {
          // Expected error when an invalid email is provided.
          const expectedError = new FirebaseAuthError(AuthClientErrorCode.INVALID_EMAIL);
          const requestHandler = handler.init(mockApp);
          // Create new account with invalid email.
          return requestHandler.createNewAccount(invalidData)
            .then(() => {
              throw new Error('Unexpected success');
            }, (error) => {
              // Expected invalid email error should be thrown.
              expect(error).to.deep.include(expectedError);
            });
        });

        const noEnrolledFactors: any[] = [[], null];
        noEnrolledFactors.forEach((arg) => {
          it(`should be fulfilled given "${JSON.stringify(arg)}" enrolled factors`, () => {
            // Successful result server response.
            const expectedResult = utils.responseFrom({
              localId: uid,
            });

            const stub = sinon.stub(HttpClient.prototype, 'send').resolves(expectedResult);
            stubs.push(stub);

            const requestHandler = handler.init(mockApp);
            // Send create new account request with no enrolled factors.
            const request: any = { uid, multiFactor: { enrolledFactors: null } };
            return requestHandler.createNewAccount(request)
              .then((returnedUid: string) => {
                // uid should be returned.
                expect(returnedUid).to.be.equal(uid);
                // Confirm expected rpc request parameters sent. In this case, no mfa info should
                // be sent.
                expect(stub).to.have.been.calledOnce.and.calledWith(
                  callParams(path, method, emptyRequest));
              });
          });
        });

        const unsupportedSecondFactor = {
          secret: 'SECRET',
          displayName: 'Google Authenticator on personal phone',
          // TOTP is not yet supported.
          factorId: 'totp',
        };
        const invalidSecondFactorTests: InvalidMultiFactorUpdateTest[] = [
          {
            name: 'unsupported second factor uid',
            error: new FirebaseAuthError(
              AuthClientErrorCode.INVALID_ARGUMENT,
              '"uid" is not supported when adding second factors via "createUser()"',
            ),
            secondFactor: {
              uid: 'enrollmentId',
              phoneNumber: '+16505557348',
              displayName: 'Spouse\'s phone number',
              factorId: 'phone',
            },
          },
          {
            name: 'invalid second factor display name',
            error: new FirebaseAuthError(
              AuthClientErrorCode.INVALID_DISPLAY_NAME,
              'The second factor "displayName" for "+16505557348" must be a valid string.',
            ),
            secondFactor: {
              phoneNumber: '+16505557348',
              displayName: ['Corp phone number'],
              factorId: 'phone',
            },
          },
          {
            name: 'invalid second factor phone number',
            error: new FirebaseAuthError(
              AuthClientErrorCode.INVALID_PHONE_NUMBER,
              'The second factor "phoneNumber" for "invalid" must be a non-empty ' +
              'E.164 standard compliant identifier string.'),
            secondFactor: {
              phoneNumber: 'invalid',
              displayName: 'Spouse\'s phone number',
              factorId: 'phone',
            },
          },
          {
            name: 'unsupported second factor enrollment time',
            error: new FirebaseAuthError(
              AuthClientErrorCode.INVALID_ARGUMENT,
              '"enrollmentTime" is not supported when adding second factors via "createUser()"'),
            secondFactor: {
              phoneNumber: '+16505557348',
              displayName: 'Spouse\'s phone number',
              factorId: 'phone',
              enrollmentTime: new Date().toUTCString(),
            },
          },
          {
            name: 'invalid second factor type',
            error: new FirebaseAuthError(
              AuthClientErrorCode.UNSUPPORTED_SECOND_FACTOR,
              `Unsupported second factor "${JSON.stringify(unsupportedSecondFactor)}" provided.`),
            secondFactor: unsupportedSecondFactor,
          },
        ];
        invalidSecondFactorTests.forEach((invalidSecondFactorTest) => {
          it(`should be rejected given an ${invalidSecondFactorTest.name}`, () => {
            const invalidSecondFactorData = {
              uid,
              email: 'user@example.com',
              emailVerified: true,
              password: 'secretpassword',
              multiFactor: {
                enrolledFactors: [invalidSecondFactorTest.secondFactor],
              },
            };
            const requestHandler = handler.init(mockApp);
            return requestHandler.createNewAccount(invalidSecondFactorData as any)
              .then(() => {
                throw new Error('Unexpected success');
              }, (error) => {
                // Expected error should be thrown.
                expect(error).to.deep.include(invalidSecondFactorTest.error);
              });
          });
        });

        it('should be rejected given tenantId in CreateRequest', () => {
          // Expected error when a tenantId is provided.
          const expectedError = new FirebaseAuthError(
            AuthClientErrorCode.INVALID_ARGUMENT,
            '"tenantId" is an invalid "CreateRequest" property.');
          const validDataWithTenantId = deepCopy(validData);
          (validDataWithTenantId as any).tenantId = TENANT_ID;

          const requestHandler = handler.init(mockApp);
          // Create new account with tenantId.
          return requestHandler.createNewAccount(validDataWithTenantId)
            .then(() => {
              throw new Error('Unexpected success');
            }, (error) => {
              // Expected invalid argument error should be thrown.
              expect(error).to.deep.include(expectedError);
            });
        });

        it('should be rejected given invalid parameters such as phoneNumber', () => {
          // Expected error when an invalid phone number is provided.
          const expectedError = new FirebaseAuthError(AuthClientErrorCode.INVALID_PHONE_NUMBER);
          const requestHandler = handler.init(mockApp);
          // Create new account with invalid phone number.
          return requestHandler.createNewAccount(invalidPhoneNumberData)
            .then(() => {
              throw new Error('Unexpected success');
            }, (error) => {
              // Expected invalid phone number error should be thrown.
              expect(error).to.deep.include(expectedError);
            });
        });

        it('should be rejected when the backend returns a user exists error', () => {
          // Expected error when the uid already exists.
          const expectedError = new FirebaseAuthError(AuthClientErrorCode.UID_ALREADY_EXISTS);
          const expectedResult = utils.errorFrom({
            error: {
              message: 'DUPLICATE_LOCAL_ID',
            },
          });
          const stub = sinon.stub(HttpClient.prototype, 'send').rejects(expectedResult);
          stubs.push(stub);

          const requestHandler = handler.init(mockApp);
          // Send create new account request and simulate a backend error that the user
          // already exists.
          return requestHandler.createNewAccount(validData)
            .then(() => {
              throw new Error('Unexpected success');
            }, (error) => {
              expect(error).to.deep.include(expectedError);
              expect(stub).to.have.been.calledOnce.and.calledWith(
                callParams(path, method, expectedValidData));
            });
        });

        it('should be rejected when the backend returns an email exists error', () => {
          // Expected error when the email already exists.
          const expectedError = new FirebaseAuthError(AuthClientErrorCode.EMAIL_ALREADY_EXISTS);
          const expectedResult = utils.errorFrom({
            error: {
              message: 'EMAIL_EXISTS',
            },
          });
          const stub = sinon.stub(HttpClient.prototype, 'send').rejects(expectedResult);
          stubs.push(stub);

          const requestHandler = handler.init(mockApp);
          // Send create new account request and simulate a backend error that the email
          // already exists.
          return requestHandler.createNewAccount(validData)
            .then(() => {
              throw new Error('Unexpected success');
            }, (error) => {
              expect(error).to.deep.include(expectedError);
              expect(stub).to.have.been.calledOnce.and.calledWith(
                callParams(path, method, expectedValidData));
            });
        });

        it('should be rejected when the backend returns a generic error', () => {
          // Some generic backend error.
          const expectedError = FirebaseAuthError.fromServerError('OPERATION_NOT_ALLOWED');
          const expectedResult = utils.errorFrom({
            error: {
              message: 'OPERATION_NOT_ALLOWED',
            },
          });
          const stub = sinon.stub(HttpClient.prototype, 'send').rejects(expectedResult);
          stubs.push(stub);

          const requestHandler = handler.init(mockApp);
          // Send create new account request with valid data but simulate backend error.
          return requestHandler.createNewAccount(validData)
            .then(() => {
              throw new Error('Unexpected success');
            }, (error) => {
              expect(error).to.deep.include(expectedError);
              expect(stub).to.have.been.calledOnce.and.calledWith(
                callParams(path, method, expectedValidData));
            });
        });
      });

      describe('with no uid specified', () => {
        const path = handler.path('v1', '/accounts', 'project_id');
        const method = 'POST';
        const uid = '12345678';
        const validData = {
          displayName: 'John Doe',
          email: 'user@example.com',
          emailVerified: true,
          disabled: false,
          photoURL: 'http://localhost/1234/photo.png',
          password: 'password',
          phoneNumber: '+11234567890',
          ignoredProperty: 'value',
        };
        const expectedValidData = {
          displayName: 'John Doe',
          email: 'user@example.com',
          emailVerified: true,
          disabled: false,
          photoUrl: 'http://localhost/1234/photo.png',
          password: 'password',
          phoneNumber: '+11234567890',
        };
        const invalidData = {
          email: 'user@invalid@',
        };
        const invalidPhoneNumberData = {
          uid,
          phoneNumber: 'invalid',
        };

        it('should be fulfilled given valid parameters', () => {
          // signupNewUser successful response.
          const expectedResult = utils.responseFrom({
            kind: 'identitytoolkit#SignupNewUserResponse',
            localId: uid,
          });
          const stub = sinon.stub(HttpClient.prototype, 'send').resolves(expectedResult);
          stubs.push(stub);

          const requestHandler = handler.init(mockApp);
          // Send request with valid data.
          return requestHandler.createNewAccount(validData)
            .then((returnedUid: string) => {
              // uid should be returned.
              expect(returnedUid).to.be.equal(uid);
              // Confirm expected rpc request parameters sent.
              expect(stub).to.have.been.calledOnce.and.calledWith(
                callParams(path, method, expectedValidData));
            });
        });

        it('should be rejected given invalid parameters such as email', () => {
          // Expected error when an invalid email is provided.
          const expectedError =
            new FirebaseAuthError(AuthClientErrorCode.INVALID_EMAIL);
          const requestHandler = handler.init(mockApp);
          // Send create new account request with invalid data.
          return requestHandler.createNewAccount(invalidData)
            .then(() => {
              throw new Error('Unexpected success');
            }, (error) => {
              expect(error).to.deep.include(expectedError);
            });
        });

        it('should be rejected given invalid parameters such as phone number', () => {
          // Expected error when an invalid phone number is provided.
          const expectedError =
            new FirebaseAuthError(AuthClientErrorCode.INVALID_PHONE_NUMBER);
          const requestHandler = handler.init(mockApp);
          // Send create new account request with invalid data.
          return requestHandler.createNewAccount(invalidPhoneNumberData)
            .then(() => {
              throw new Error('Unexpected success');
            }, (error) => {
              expect(error).to.deep.include(expectedError);
            });
        });

        it('should be rejected when the backend returns a generic error', () => {
          // Some generic backend error.
          const expectedError = FirebaseAuthError.fromServerError('OPERATION_NOT_ALLOWED');
          const expectedResult = utils.errorFrom({
            error: {
              message: 'OPERATION_NOT_ALLOWED',
            },
          });
          const stub = sinon.stub(HttpClient.prototype, 'send').rejects(expectedResult);
          stubs.push(stub);

          const requestHandler = handler.init(mockApp);
          // Send valid create new account request and simulate backend error.
          return requestHandler.createNewAccount(validData)
            .then(() => {
              throw new Error('Unexpected success');
            }, (error) => {
              expect(error).to.deep.include(expectedError);
              expect(stub).to.have.been.calledOnce.and.calledWith(
                callParams(path, method, expectedValidData));
            });
        });
      });
    });

    describe('getEmailActionLink', () => {
      const path = handler.path('v1', '/accounts:sendOobCode', 'project_id');
      const method = 'POST';
      const email = 'user@example.com';
      const newEmail = 'usernew@example.com';
      const actionCodeSettings = {
        url: 'https://www.example.com/path/file?a=1&b=2',
        handleCodeInApp: true,
        iOS: {
          bundleId: 'com.example.ios',
        },
        android: {
          packageName: 'com.example.android',
          installApp: true,
          minimumVersion: '6',
        },
        dynamicLinkDomain: 'custom.page.link',
        linkDomain: 'project-id.firebaseapp.com',
      };
      const expectedActionCodeSettingsRequest = new ActionCodeSettingsBuilder(actionCodeSettings).buildRequest();
      const expectedLink = 'https://custom.page.link?link=' +
          encodeURIComponent('https://projectId.firebaseapp.com/__/auth/action?oobCode=CODE') +
          '&apn=com.example.android&ibi=com.example.ios';
      const expectedResult = utils.responseFrom({
        email,
        oobLink: expectedLink,
      });

      it('should be fulfilled given a valid email', () => {
        const requestData = deepExtend({
          requestType: 'PASSWORD_RESET',
          email,
          returnOobLink: true,
        }, expectedActionCodeSettingsRequest);
        const stub = sinon.stub(HttpClient.prototype, 'send').resolves(expectedResult);
        stubs.push(stub);

        const requestHandler = handler.init(mockApp);
        return requestHandler.getEmailActionLink('PASSWORD_RESET', email, actionCodeSettings)
          .then((oobLink: string) => {
            expect(oobLink).to.be.equal(expectedLink);
            expect(stub).to.have.been.calledOnce.and.calledWith(callParams(path, method, requestData));
          });
      });

      EMAIL_ACTION_REQUEST_TYPES.forEach((requestType) => {
        it('should be fulfilled given a valid requestType:' + requestType + ' and ActionCodeSettings', () => {
          const requestData = deepExtend({
            requestType,
            email,
            returnOobLink: true,
            ...(requestType === 'VERIFY_AND_CHANGE_EMAIL') && { newEmail },
          }, expectedActionCodeSettingsRequest);
          const stub = sinon.stub(HttpClient.prototype, 'send').resolves(expectedResult);
          stubs.push(stub);

          const requestHandler = handler.init(mockApp);
          return requestHandler.getEmailActionLink(requestType, email, actionCodeSettings, 
            (requestType === 'VERIFY_AND_CHANGE_EMAIL') ? newEmail: undefined)
            .then((oobLink: string) => {
              expect(oobLink).to.be.equal(expectedLink);
              expect(stub).to.have.been.calledOnce.and.calledWith(callParams(path, method, requestData));
            });
        });
      });

      EMAIL_ACTION_REQUEST_TYPES.forEach((requestType) => {
        if (requestType === 'EMAIL_SIGNIN' || requestType === 'VERIFY_AND_CHANGE_EMAIL') {
          return;
        }
        it('should be fulfilled given requestType:' + requestType + ' and no ActionCodeSettings', () => {
          const requestData = {
            requestType,
            email,
            returnOobLink: true,
          };
          const stub = sinon.stub(HttpClient.prototype, 'send').resolves(expectedResult);
          stubs.push(stub);

          const requestHandler = handler.init(mockApp);
          return requestHandler.getEmailActionLink(requestType, email)
            .then((oobLink: string) => {
              expect(oobLink).to.be.equal(expectedLink);
              expect(stub).to.have.been.calledOnce.and.calledWith(callParams(path, method, requestData));
            });
        });
      });

      it('should be fulfilled given a valid requestType: VERIFY_AND_CHANGE_EMAIL and no ActionCodeSettings', () => {
        const VERIFY_AND_CHANGE_EMAIL = 'VERIFY_AND_CHANGE_EMAIL';
        const requestData = {
          requestType: VERIFY_AND_CHANGE_EMAIL,
          email,
          returnOobLink: true,
          newEmail,
        };
        const stub = sinon.stub(HttpClient.prototype, 'send').resolves(expectedResult);
        stubs.push(stub);

        const requestHandler = handler.init(mockApp);
        return requestHandler.getEmailActionLink(VERIFY_AND_CHANGE_EMAIL, email, undefined, newEmail)
          .then((oobLink: string) => {
            expect(oobLink).to.be.equal(expectedLink);
            expect(stub).to.have.been.calledOnce.and.calledWith(callParams(path, method, requestData));
          });
      });

      it('should be rejected given requestType:EMAIL_SIGNIN and no ActionCodeSettings', () => {
        const invalidRequestType = 'EMAIL_SIGNIN';
        const requestHandler = handler.init(mockApp);

        return requestHandler.getEmailActionLink(invalidRequestType, email)
          .should.eventually.be.rejected.and.have.property('code', 'auth/argument-error');
      });

      it('should be rejected given requestType: VERIFY_AND_CHANGE and no new Email address', () => {
        const requestHandler = handler.init(mockApp);
        const expectedError = new FirebaseAuthError(
          AuthClientErrorCode.INVALID_ARGUMENT,
          '`newEmail` is required when `requestType` === \'VERIFY_AND_CHANGE_EMAIL\'',
        )

        return requestHandler.getEmailActionLink('VERIFY_AND_CHANGE_EMAIL', email)
          .then(() => {
            throw new Error('Unexpected success');
          }, (error) => {
            // Invalid argument error should be thrown.
            expect(error).to.deep.include(expectedError);
          });
      });

      it('should be rejected given an invalid email', () => {
        const invalidEmail = 'invalid';
        const expectedError = new FirebaseAuthError(AuthClientErrorCode.INVALID_EMAIL);

        const requestHandler = handler.init(mockApp);
        return requestHandler.getEmailActionLink('PASSWORD_RESET', invalidEmail, actionCodeSettings)
          .then(() => {
            throw new Error('Unexpected success');
          }, (error) => {
            // Invalid email error should be thrown.
            expect(error).to.deep.include(expectedError);
          });
      });

      it('should be rejected given an invalid new email', () => {
        const invalidNewEmail = 'invalid';
        const expectedError = new FirebaseAuthError(AuthClientErrorCode.INVALID_NEW_EMAIL);

        const requestHandler = handler.init(mockApp);
        return requestHandler.getEmailActionLink('VERIFY_AND_CHANGE_EMAIL', email, actionCodeSettings, invalidNewEmail)
          .then(() => {
            throw new Error('Unexpected success');
          }, (error) => {
            // Invalid new email error should be thrown.
            expect(error).to.deep.include(expectedError);
          });
      });

      it('should be rejected given an invalid request type', () => {
        const invalidRequestType = 'invalid';
        const expectedError = new FirebaseAuthError(
          AuthClientErrorCode.INVALID_ARGUMENT,
          '"invalid" is not a supported email action request type.',
        );

        const requestHandler = handler.init(mockApp);
        return requestHandler.getEmailActionLink(invalidRequestType, email, actionCodeSettings)
          .then(() => {
            throw new Error('Unexpected success');
          }, (error) => {
            // Invalid argument error should be thrown.
            expect(error).to.deep.include(expectedError);
          });
      });

      it('should be rejected given an invalid ActionCodeSettings object', () => {
        const invalidActionCodeSettings = 'invalid' as any;
        const expectedError = new FirebaseAuthError(
          AuthClientErrorCode.INVALID_ARGUMENT,
          '"ActionCodeSettings" must be a non-null object.',
        );

        const requestHandler = handler.init(mockApp);
        return requestHandler.getEmailActionLink('EMAIL_SIGNIN', email, invalidActionCodeSettings)
          .then(() => {
            throw new Error('Unexpected success');
          }, (error) => {
            // Invalid argument error should be thrown.
            expect(error).to.deep.include(expectedError);
          });
      });

      it('should be rejected when the response does not contain a link', () => {
        const expectedError = new FirebaseAuthError(
          AuthClientErrorCode.INTERNAL_ERROR,
          'INTERNAL ASSERT FAILED: Unable to create the email action link');
        const requestData = deepExtend({
          requestType: 'VERIFY_EMAIL',
          email,
          returnOobLink: true,
        }, expectedActionCodeSettingsRequest);
        // Simulate response missing link.
        const stub = sinon.stub(HttpClient.prototype, 'send')
          .resolves(utils.responseFrom({ email }));
        stubs.push(stub);

        const requestHandler = handler.init(mockApp);
        return requestHandler.getEmailActionLink('VERIFY_EMAIL', email, actionCodeSettings)
          .then(() => {
            throw new Error('Unexpected success');
          }, (error) => {
            expect(error).to.deep.include(expectedError);
            expect(stub).to.have.been.calledOnce.and.calledWith(callParams(path, method, requestData));
          });
      });

      it('should be rejected when the backend returns an error', () => {
        // Backend returned error.
        const expectedError = FirebaseAuthError.fromServerError('USER_NOT_FOUND');
        const expectedServerError = utils.errorFrom({
          error: {
            message: 'USER_NOT_FOUND',
          },
        });
        const requestData = deepExtend({
          requestType: 'VERIFY_EMAIL',
          email,
          returnOobLink: true,
        }, expectedActionCodeSettingsRequest);
        const stub = sinon.stub(HttpClient.prototype, 'send').rejects(expectedServerError);
        stubs.push(stub);

        const requestHandler = handler.init(mockApp);
        return requestHandler.getEmailActionLink('VERIFY_EMAIL', email, actionCodeSettings)
          .then(() => {
            throw new Error('Unexpected success');
          }, (error) => {
            expect(error).to.deep.include(expectedError);
            expect(stub).to.have.been.calledOnce.and.calledWith(callParams(path, method, requestData));
          });
      });
    });

    describe('getOAuthIdpConfig()', () => {
      const providerId = 'oidc.provider';
      const path = handler.path('v2', `/oauthIdpConfigs/${providerId}`, 'project_id');
      const expectedHttpMethod = 'GET';
      const expectedResult = utils.responseFrom({
        name: `projects/project1/oauthIdpConfigs/${providerId}`,
      });

      it('should be fulfilled given a valid provider ID', () => {
        const stub = sinon.stub(HttpClient.prototype, 'send').resolves(expectedResult);
        stubs.push(stub);

        const requestHandler = handler.init(mockApp);
        return requestHandler.getOAuthIdpConfig(providerId)
          .then((result) => {
            expect(result).to.deep.equal(expectedResult.data);
            expect(stub).to.have.been.calledOnce.and.calledWith(
              callParams(path, expectedHttpMethod, {}));
          });
      });

      const invalidProviderIds = [
        null, NaN, 0, 1, true, false, '', 'saml.provider', ['oidc.provider'], [], {}, { a: 1 }, _.noop];
      invalidProviderIds.forEach((invalidProviderId) => {
        it('should be rejected given an invalid provider ID:' + JSON.stringify(invalidProviderId), () => {
          const expectedError = new FirebaseAuthError(AuthClientErrorCode.INVALID_PROVIDER_ID);

          const requestHandler = handler.init(mockApp);
          return requestHandler.getOAuthIdpConfig(invalidProviderId as any)
            .then(() => {
              throw new Error('Unexpected success');
            }, (error) => {
              expect(error).to.deep.include(expectedError);
            });
        });
      });

      it('should be rejected given a backend error', () => {
        const expectedError = new FirebaseAuthError(AuthClientErrorCode.CONFIGURATION_NOT_FOUND);
        const expectedServerError = utils.errorFrom({
          error: {
            message: 'CONFIGURATION_NOT_FOUND',
          },
        });
        const stub = sinon.stub(HttpClient.prototype, 'send').rejects(expectedServerError);
        stubs.push(stub);

        const requestHandler = handler.init(mockApp);
        return requestHandler.getOAuthIdpConfig(providerId)
          .then(() => {
            throw new Error('Unexpected success');
          }, (error) => {
            expect(error).to.deep.include(expectedError);
            expect(stub).to.have.been.calledOnce.and.calledWith(
              callParams(path, expectedHttpMethod, {}));
          });
      });
    });

    describe('listOAuthIdpConfigs()', () => {
      const path = handler.path('v2', '/oauthIdpConfigs', 'project_id');
      const expectedHttpMethod = 'GET';
      const nextPageToken = 'PAGE_TOKEN';
      const maxResults = 50;
      const expectedResult = utils.responseFrom({
        oauthIdpConfigs : [
          { name: 'projects/project1/oauthIdpConfigs/oidc.provider1' },
          { name: 'projects/project1/oauthIdpConfigs/oidc.provider2' },
        ],
        nextPageToken: 'NEXT_PAGE_TOKEN',
      });

      it('should be fulfilled given a valid parameters', () => {
        const data = {
          pageSize: maxResults,
          pageToken: nextPageToken,
        };
        const stub = sinon.stub(HttpClient.prototype, 'send').resolves(expectedResult);
        stubs.push(stub);

        const requestHandler = handler.init(mockApp);
        return requestHandler.listOAuthIdpConfigs(maxResults, nextPageToken)
          .then((result) => {
            expect(result).to.deep.equal(expectedResult.data);
            expect(stub).to.have.been.calledOnce.and.calledWith(
              callParams(path, expectedHttpMethod, data));
          });
      });

      it('should be fulfilled with empty configuration array when no configurations exist', () => {
        const data = {
          pageSize: maxResults,
          pageToken: nextPageToken,
        };
        const stub = sinon.stub(HttpClient.prototype, 'send').resolves(utils.responseFrom({}));
        stubs.push(stub);

        const requestHandler = handler.init(mockApp);
        return requestHandler.listOAuthIdpConfigs(maxResults, nextPageToken)
          .then((result) => {
            expect(result).to.deep.equal({ oauthIdpConfigs: [] });
            expect(stub).to.have.been.calledOnce.and.calledWith(
              callParams(path, expectedHttpMethod, data));
          });
      });

      it('should be fulfilled given no parameters', () => {
        // Default maxResults should be used.
        const data = {
          pageSize: 100,
        };
        const stub = sinon.stub(HttpClient.prototype, 'send').resolves(expectedResult);
        stubs.push(stub);

        const requestHandler = handler.init(mockApp);
        return requestHandler.listOAuthIdpConfigs()
          .then((result) => {
            expect(result).to.deep.equal(expectedResult.data);
            expect(stub).to.have.been.calledOnce.and.calledWith(
              callParams(path, expectedHttpMethod, data));
          });
      });

      it('should be rejected given an invalid maxResults', () => {
        const expectedError = new FirebaseAuthError(
          AuthClientErrorCode.INVALID_ARGUMENT,
          'Required "maxResults" must be a positive integer that does not ' +
          'exceed 100.',
        );

        const requestHandler = handler.init(mockApp);
        return requestHandler.listOAuthIdpConfigs(101, nextPageToken)
          .then(() => {
            throw new Error('Unexpected success');
          }, (error) => {
            expect(error).to.deep.include(expectedError);
          });
      });

      it('should be rejected given an invalid next page token', () => {
        const expectedError = new FirebaseAuthError(
          AuthClientErrorCode.INVALID_PAGE_TOKEN,
        );

        const requestHandler = handler.init(mockApp);
        return requestHandler.listOAuthIdpConfigs(maxResults, '')
          .then(() => {
            throw new Error('Unexpected success');
          }, (error) => {
            expect(error).to.deep.include(expectedError);
          });
      });

      it('should be rejected when the backend returns an error', () => {
        const expectedServerError = utils.errorFrom({
          error: {
            message: 'INVALID_PAGE_SELECTION',
          },
        });
        const expectedError = FirebaseAuthError.fromServerError('INVALID_PAGE_SELECTION');
        const data = {
          pageSize: maxResults,
          pageToken: nextPageToken,
        };
        const stub = sinon.stub(HttpClient.prototype, 'send').rejects(expectedServerError);
        stubs.push(stub);

        const requestHandler = handler.init(mockApp);
        return requestHandler.listOAuthIdpConfigs(maxResults, nextPageToken)
          .then(() => {
            throw new Error('Unexpected success');
          }, (error) => {
            expect(error).to.deep.include(expectedError);
            expect(stub).to.have.been.calledOnce.and.calledWith(
              callParams(path, expectedHttpMethod, data));
          });
      });
    });

    describe('deleteOAuthIdpConfig()', () => {
      const providerId = 'oidc.provider';
      const path = handler.path('v2', `/oauthIdpConfigs/${providerId}`, 'project_id');
      const expectedHttpMethod = 'DELETE';
      const expectedResult = utils.responseFrom({});

      it('should be fulfilled given a valid provider ID', () => {
        const stub = sinon.stub(HttpClient.prototype, 'send').resolves(expectedResult);
        stubs.push(stub);

        const requestHandler = handler.init(mockApp);
        return requestHandler.deleteOAuthIdpConfig(providerId)
          .then((result) => {
            expect(result).to.be.undefined;
            expect(stub).to.have.been.calledOnce.and.calledWith(
              callParams(path, expectedHttpMethod, {}));
          });
      });

      const invalidProviderIds = [
        null, NaN, 0, 1, true, false, '', 'saml.provider', ['oidc.provider'], [], {}, { a: 1 }, _.noop];
      invalidProviderIds.forEach((invalidProviderId) => {
        it('should be rejected given an invalid provider ID:' + JSON.stringify(invalidProviderId), () => {
          const expectedError = new FirebaseAuthError(AuthClientErrorCode.INVALID_PROVIDER_ID);

          const requestHandler = handler.init(mockApp);
          return requestHandler.deleteOAuthIdpConfig(invalidProviderId as any)
            .then(() => {
              throw new Error('Unexpected success');
            }, (error) => {
              expect(error).to.deep.include(expectedError);
            });
        });
      });

      it('should be rejected given a backend error', () => {
        const expectedError = new FirebaseAuthError(AuthClientErrorCode.CONFIGURATION_NOT_FOUND);
        const expectedServerError = utils.errorFrom({
          error: {
            message: 'CONFIGURATION_NOT_FOUND',
          },
        });
        const stub = sinon.stub(HttpClient.prototype, 'send').rejects(expectedServerError);
        stubs.push(stub);

        const requestHandler = handler.init(mockApp);
        return requestHandler.deleteOAuthIdpConfig(providerId)
          .then(() => {
            throw new Error('Unexpected success');
          }, (error) => {
            expect(error).to.deep.include(expectedError);
            expect(stub).to.have.been.calledOnce.and.calledWith(
              callParams(path, expectedHttpMethod, {}));
          });
      });
    });

    describe('createOAuthIdpConfig', () => {
      const providerId = 'oidc.provider';
      const path = handler.path('v2', `/oauthIdpConfigs?oauthIdpConfigId=${providerId}`, 'project_id');
      const expectedHttpMethod = 'POST';
      const clientSecret = 'CLIENT_SECRET';
      const responseType = { code: true };
      const configOptions = {
        providerId,
        displayName: 'OIDC_DISPLAY_NAME',
        enabled: true,
        clientId: 'CLIENT_ID',
        issuer: 'https://oidc.com/issuer',
      };
      const expectedRequest = {
        displayName: 'OIDC_DISPLAY_NAME',
        enabled: true,
        clientId: 'CLIENT_ID',
        issuer: 'https://oidc.com/issuer',
      };
      const expectedResult = utils.responseFrom(deepExtend({
        name: `projects/project1/oauthIdpConfigs/${providerId}`,
      }, expectedRequest));
      const expectedCodeFlowOptions = {
        providerId,
        displayName: 'OIDC_DISPLAY_NAME',
        enabled: true,
        clientId: 'CLIENT_ID',
        issuer: 'https://oidc.com/issuer',
        clientSecret,
        responseType,
      };
      const expectedCodeFlowRequest = {
        displayName: 'OIDC_DISPLAY_NAME',
        enabled: true,
        clientId: 'CLIENT_ID',
        issuer: 'https://oidc.com/issuer',
        clientSecret,
        responseType,
      };
      const expectedCodeFlowResult = utils.responseFrom(deepExtend({
        name: `projects/project1/oauthIdpConfigs/${providerId}`,
      }, expectedCodeFlowRequest));

      it('should be fulfilled given valid parameters', () => {
        const stub = sinon.stub(HttpClient.prototype, 'send').resolves(expectedResult);
        stubs.push(stub);

        const requestHandler = handler.init(mockApp);
        return requestHandler.createOAuthIdpConfig(configOptions)
          .then((response) => {
            expect(response).to.deep.equal(expectedResult.data);
            expect(stub).to.have.been.calledOnce.and.calledWith(
              callParams(path, expectedHttpMethod, expectedRequest));
          });
      });

      it('should be fulfilled given valid parameters for OIDC code flow', () => {
        const stub = sinon.stub(HttpClient.prototype, 'send').resolves(expectedCodeFlowResult);
        stubs.push(stub);

        const requestHandler = handler.init(mockApp);
        return requestHandler.createOAuthIdpConfig(expectedCodeFlowOptions)
          .then((response) => {
            expect(response).to.deep.equal(expectedCodeFlowResult.data);
            expect(stub).to.have.been.calledOnce.and.calledWith(
              callParams(path, expectedHttpMethod, expectedCodeFlowRequest));
          });
      });

      it('should be rejected given invalid parameters', () => {
        const expectedError = new FirebaseAuthError(
          AuthClientErrorCode.INVALID_CONFIG,
          '"OIDCAuthProviderConfig.issuer" must be a valid URL string.',
        );
        const invalidOptions: OIDCAuthProviderConfig = deepCopy(configOptions);
        invalidOptions.issuer = 'invalid';

        const requestHandler = handler.init(mockApp);
        return requestHandler.createOAuthIdpConfig(invalidOptions)
          .then(() => {
            throw new Error('Unexpected success');
          }, (error) => {
            expect(error).to.deep.include(expectedError);
          });
      });

      it('should be rejected when the backend returns a response missing name', () => {
        const expectedError = new FirebaseAuthError(
          AuthClientErrorCode.INTERNAL_ERROR,
          'INTERNAL ASSERT FAILED: Unable to create new OIDC configuration',
        );
        const stub = sinon.stub(HttpClient.prototype, 'send').resolves(utils.responseFrom({}));
        stubs.push(stub);

        const requestHandler = handler.init(mockApp);
        return requestHandler.createOAuthIdpConfig(configOptions)
          .then(() => {
            throw new Error('Unexpected success');
          }, (error) => {
            expect(error).to.deep.include(expectedError);
            expect(stub).to.have.been.calledOnce.and.calledWith(
              callParams(path, expectedHttpMethod, expectedRequest));
          });
      });

      it('should be rejected when the backend returns an error', () => {
        const expectedServerError = utils.errorFrom({
          error: {
            message: 'INVALID_CONFIG',
          },
        });
        const expectedError = new FirebaseAuthError(AuthClientErrorCode.INVALID_CONFIG);
        const stub = sinon.stub(HttpClient.prototype, 'send').rejects(expectedServerError);
        stubs.push(stub);

        const requestHandler = handler.init(mockApp);
        return requestHandler.createOAuthIdpConfig(configOptions)
          .then(() => {
            throw new Error('Unexpected success');
          }, (error) => {
            expect(error).to.deep.include(expectedError);
            expect(stub).to.have.been.calledOnce.and.calledWith(
              callParams(path, expectedHttpMethod, expectedRequest));
          });
      });
    });

    describe('updateOAuthIdpConfig()', () => {
      const providerId = 'oidc.provider';
      const path = handler.path('v2', `/oauthIdpConfigs/${providerId}`, 'project_id');
      const expectedHttpMethod = 'PATCH';
      const clientSecret = 'CLIENT_SECRET';
      const responseType = { code: true };
      const configOptions = {
        displayName: 'OIDC_DISPLAY_NAME',
        enabled: true,
        clientId: 'CLIENT_ID',
        issuer: 'https://oidc.com/issuer',
      };
      const expectedRequest = {
        displayName: 'OIDC_DISPLAY_NAME',
        enabled: true,
        clientId: 'CLIENT_ID',
        issuer: 'https://oidc.com/issuer',
      };
      const expectedResult = utils.responseFrom(deepExtend({
        name: `projects/project_id/oauthIdpConfigs/${providerId}`,
      }, expectedRequest));
      const expectedPartialResult = utils.responseFrom(deepExtend({
        name: `projects/project_id/oauthIdpConfigs/${providerId}`,
      }, {
        displayName: 'OIDC_DISPLAY_NAME',
        enabled: false,
        clientId: 'NEW_CLIENT_ID',
        issuer: 'https://oidc.com/issuer2',
      }));
      const expectedCodeFlowOptions = {
        providerId,
        displayName: 'OIDC_DISPLAY_NAME',
        enabled: true,
        clientId: 'CLIENT_ID',
        issuer: 'https://oidc.com/issuer',
        clientSecret,
        responseType,
      };
      const expectedCodeFlowRequest = {
        displayName: 'OIDC_DISPLAY_NAME',
        enabled: true,
        clientId: 'CLIENT_ID',
        issuer: 'https://oidc.com/issuer',
        clientSecret,
        responseType,
      };
      const expectedCodeFlowResult = utils.responseFrom(deepExtend({
        name: `projects/project1/oauthIdpConfigs/${providerId}`,
      }, expectedCodeFlowRequest));

      it('should be fulfilled given full parameters', () => {
        const expectedPath = path + '?updateMask=enabled,displayName,issuer,clientId';
        const stub = sinon.stub(HttpClient.prototype, 'send').resolves(expectedResult);
        stubs.push(stub);

        const requestHandler = handler.init(mockApp);
        return requestHandler.updateOAuthIdpConfig(providerId, configOptions)
          .then((response) => {
            expect(response).to.deep.equal(expectedResult.data);
            expect(stub).to.have.been.calledOnce.and.calledWith(
              callParams(expectedPath, expectedHttpMethod, expectedRequest));
          });
      });

      it('should be fulfilled given full parameters for OIDC code flow', () => {
        const expectedPath = path + '?updateMask=enabled,displayName,issuer,clientId,clientSecret,responseType.code';
        const stub = sinon.stub(HttpClient.prototype, 'send').resolves(expectedCodeFlowResult);
        stubs.push(stub);

        const requestHandler = handler.init(mockApp);
        return requestHandler.updateOAuthIdpConfig(providerId, expectedCodeFlowOptions)
          .then((response) => {
            expect(response).to.deep.equal(expectedCodeFlowResult.data);
            expect(stub).to.have.been.calledOnce.and.calledWith(
              callParams(expectedPath, expectedHttpMethod, expectedCodeFlowRequest));
          });
      });

      it('should be fulfilled given partial parameters', () => {
        const expectedPath = path + '?updateMask=enabled,clientId';
        const stub = sinon.stub(HttpClient.prototype, 'send').resolves(expectedPartialResult);
        const partialConfigOptions = {
          enabled: false,
          clientId: 'NEW_CLIENT_ID',
        };
        const partialRequest: OIDCUpdateAuthProviderRequest = {
          enabled: false,
          displayName: undefined,
          issuer: undefined,
          clientId: 'NEW_CLIENT_ID',
        };
        stubs.push(stub);

        const requestHandler = handler.init(mockApp);
        return requestHandler.updateOAuthIdpConfig(providerId, partialConfigOptions)
          .then((response) => {
            expect(response).to.deep.equal(expectedPartialResult.data);
            expect(stub).to.have.been.calledOnce.and.calledWith(
              callParams(expectedPath, expectedHttpMethod, partialRequest));
          });
      });

      it('should be fulfilled given single parameter to change', () => {
        const expectedPath = path + '?updateMask=issuer';
        const stub = sinon.stub(HttpClient.prototype, 'send').resolves(expectedPartialResult);
        const partialConfigOptions = {
          issuer: 'https://oidc.com/issuer2',
        };
        const partialRequest: OIDCUpdateAuthProviderRequest = {
          clientId: undefined,
          displayName: undefined,
          enabled: undefined,
          issuer: 'https://oidc.com/issuer2',
        };
        stubs.push(stub);

        const requestHandler = handler.init(mockApp);
        return requestHandler.updateOAuthIdpConfig(providerId, partialConfigOptions)
          .then((response) => {
            expect(response).to.deep.equal(expectedPartialResult.data);
            expect(stub).to.have.been.calledOnce.and.calledWith(
              callParams(expectedPath, expectedHttpMethod, partialRequest));
          });
      });

      const invalidProviderIds = [
        null, NaN, 0, 1, true, false, '', 'saml.provider', ['oidc.provider'], [], {}, { a: 1 }, _.noop];
      invalidProviderIds.forEach((invalidProviderId) => {
        it('should be rejected given an invalid provider ID:' + JSON.stringify(invalidProviderId), () => {
          const expectedError = new FirebaseAuthError(AuthClientErrorCode.INVALID_PROVIDER_ID);

          const requestHandler = handler.init(mockApp);
          return requestHandler.updateOAuthIdpConfig(invalidProviderId as any, configOptions)
            .then(() => {
              throw new Error('Unexpected success');
            }, (error) => {
              expect(error).to.deep.include(expectedError);
            });
        });
      });

      it('should be rejected given invalid parameters', () => {
        const expectedError = new FirebaseAuthError(
          AuthClientErrorCode.INVALID_CONFIG,
          '"OIDCAuthProviderConfig.issuer" must be a valid URL string.',
        );
        const invalidOptions: OIDCUpdateAuthProviderRequest = deepCopy(configOptions);
        invalidOptions.issuer = 'invalid';

        const requestHandler = handler.init(mockApp);
        return requestHandler.updateOAuthIdpConfig(providerId, invalidOptions)
          .then(() => {
            throw new Error('Unexpected success');
          }, (error) => {
            expect(error).to.deep.include(expectedError);
          });
      });

      it('should be rejected when the backend returns a response missing name', () => {
        const expectedPath = path + '?updateMask=enabled,displayName,issuer,clientId';
        const expectedError = new FirebaseAuthError(
          AuthClientErrorCode.INTERNAL_ERROR,
          'INTERNAL ASSERT FAILED: Unable to update OIDC configuration',
        );
        const stub = sinon.stub(HttpClient.prototype, 'send').resolves(utils.responseFrom({}));
        stubs.push(stub);

        const requestHandler = handler.init(mockApp);
        return requestHandler.updateOAuthIdpConfig(providerId, configOptions)
          .then(() => {
            throw new Error('Unexpected success');
          }, (error) => {
            expect(error).to.deep.include(expectedError);
            expect(stub).to.have.been.calledOnce.and.calledWith(
              callParams(expectedPath, expectedHttpMethod, expectedRequest));
          });
      });

      it('should be rejected when the backend returns an error', () => {
        const expectedPath = path + '?updateMask=enabled,displayName,issuer,clientId';
        const expectedServerError = utils.errorFrom({
          error: {
            message: 'INVALID_CONFIG',
          },
        });
        const expectedError = new FirebaseAuthError(AuthClientErrorCode.INVALID_CONFIG);
        const stub = sinon.stub(HttpClient.prototype, 'send').rejects(expectedServerError);
        stubs.push(stub);

        const requestHandler = handler.init(mockApp);
        return requestHandler.updateOAuthIdpConfig(providerId, configOptions)
          .then(() => {
            throw new Error('Unexpected success');
          }, (error) => {
            expect(error).to.deep.include(expectedError);
            expect(stub).to.have.been.calledOnce.and.calledWith(
              callParams(expectedPath, expectedHttpMethod, expectedRequest));
          });
      });
    });

    describe('getInboundSamlConfig()', () => {
      const providerId = 'saml.provider';
      const path = handler.path('v2', `/inboundSamlConfigs/${providerId}`, 'project_id');

      const expectedHttpMethod = 'GET';
      const expectedResult = utils.responseFrom({
        name: `projects/project1/inboundSamlConfigs/${providerId}`,
      });

      it('should be fulfilled given a valid provider ID', () => {
        const stub = sinon.stub(HttpClient.prototype, 'send').resolves(expectedResult);
        stubs.push(stub);

        const requestHandler = handler.init(mockApp);
        return requestHandler.getInboundSamlConfig(providerId)
          .then((result) => {
            expect(result).to.deep.equal(expectedResult.data);
            expect(stub).to.have.been.calledOnce.and.calledWith(callParams(path, expectedHttpMethod, {}));
          });
      });

      const invalidProviderIds = [
        null, NaN, 0, 1, true, false, '', 'oidc.provider', ['saml.provider'], [], {}, { a: 1 }, _.noop];
      invalidProviderIds.forEach((invalidProviderId) => {
        it('should be rejected given an invalid provider ID:' + JSON.stringify(invalidProviderId), () => {
          const expectedError = new FirebaseAuthError(AuthClientErrorCode.INVALID_PROVIDER_ID);

          const requestHandler = handler.init(mockApp);
          return requestHandler.getInboundSamlConfig(invalidProviderId as any)
            .then(() => {
              throw new Error('Unexpected success');
            }, (error) => {
              expect(error).to.deep.include(expectedError);
            });
        });
      });

      it('should be rejected given a backend error', () => {
        const expectedError = new FirebaseAuthError(AuthClientErrorCode.CONFIGURATION_NOT_FOUND);
        const expectedServerError = utils.errorFrom({
          error: {
            message: 'CONFIGURATION_NOT_FOUND',
          },
        });
        const stub = sinon.stub(HttpClient.prototype, 'send').rejects(expectedServerError);
        stubs.push(stub);

        const requestHandler = handler.init(mockApp);
        return requestHandler.getInboundSamlConfig(providerId)
          .then(() => {
            throw new Error('Unexpected success');
          }, (error) => {
            expect(error).to.deep.include(expectedError);
            expect(stub).to.have.been.calledOnce.and.calledWith(callParams(path, expectedHttpMethod, {}));
          });
      });
    });

    describe('listInboundSamlConfigs()', () => {
      const path = handler.path('v2', '/inboundSamlConfigs', 'project_id');
      const expectedHttpMethod = 'GET';
      const nextPageToken = 'PAGE_TOKEN';
      const maxResults = 50;
      const expectedResult = utils.responseFrom({
        inboundSamlConfigs : [
          { name: 'projects/project1/inboundSamlConfigs/saml.provider1' },
          { name: 'projects/project1/inboundSamlConfigs/saml.provider2' },
        ],
        nextPageToken: 'NEXT_PAGE_TOKEN',
      });

      it('should be fulfilled given a valid parameters', () => {
        const data = {
          pageSize: maxResults,
          pageToken: nextPageToken,
        };
        const stub = sinon.stub(HttpClient.prototype, 'send').resolves(expectedResult);
        stubs.push(stub);

        const requestHandler = handler.init(mockApp);
        return requestHandler.listInboundSamlConfigs(maxResults, nextPageToken)
          .then((result) => {
            expect(result).to.deep.equal(expectedResult.data);
            expect(stub).to.have.been.calledOnce.and.calledWith(callParams(path, expectedHttpMethod, data));
          });
      });

      it('should be fulfilled with empty configuration array when no configurations exist', () => {
        const data = {
          pageSize: maxResults,
          pageToken: nextPageToken,
        };
        const stub = sinon.stub(HttpClient.prototype, 'send').resolves(utils.responseFrom({}));
        stubs.push(stub);

        const requestHandler = handler.init(mockApp);
        return requestHandler.listInboundSamlConfigs(maxResults, nextPageToken)
          .then((result) => {
            expect(result).to.deep.equal({ inboundSamlConfigs: [] });
            expect(stub).to.have.been.calledOnce.and.calledWith(callParams(path, expectedHttpMethod, data));
          });
      });

      it('should be fulfilled given no parameters', () => {
        // Default maxResults should be used.
        const data = {
          pageSize: 100,
        };
        const stub = sinon.stub(HttpClient.prototype, 'send').resolves(expectedResult);
        stubs.push(stub);

        const requestHandler = handler.init(mockApp);
        return requestHandler.listInboundSamlConfigs()
          .then((result) => {
            expect(result).to.deep.equal(expectedResult.data);
            expect(stub).to.have.been.calledOnce.and.calledWith(callParams(path, expectedHttpMethod, data));
          });
      });

      it('should be rejected given an invalid maxResults', () => {
        const expectedError = new FirebaseAuthError(
          AuthClientErrorCode.INVALID_ARGUMENT,
          'Required "maxResults" must be a positive integer that does not ' +
          'exceed 100.',
        );

        const requestHandler = handler.init(mockApp);
        return requestHandler.listInboundSamlConfigs(101, nextPageToken)
          .then(() => {
            throw new Error('Unexpected success');
          }, (error) => {
            expect(error).to.deep.include(expectedError);
          });
      });

      it('should be rejected given an invalid next page token', () => {
        const expectedError = new FirebaseAuthError(
          AuthClientErrorCode.INVALID_PAGE_TOKEN,
        );

        const requestHandler = handler.init(mockApp);
        return requestHandler.listInboundSamlConfigs(maxResults, '')
          .then(() => {
            throw new Error('Unexpected success');
          }, (error) => {
            expect(error).to.deep.include(expectedError);
          });
      });

      it('should be rejected when the backend returns an error', () => {
        const expectedServerError = utils.errorFrom({
          error: {
            message: 'INVALID_PAGE_SELECTION',
          },
        });
        const expectedError = FirebaseAuthError.fromServerError('INVALID_PAGE_SELECTION');
        const data = {
          pageSize: maxResults,
          pageToken: nextPageToken,
        };
        const stub = sinon.stub(HttpClient.prototype, 'send').rejects(expectedServerError);
        stubs.push(stub);

        const requestHandler = handler.init(mockApp);
        return requestHandler.listInboundSamlConfigs(maxResults, nextPageToken)
          .then(() => {
            throw new Error('Unexpected success');
          }, (error) => {
            expect(error).to.deep.include(expectedError);
            expect(stub).to.have.been.calledOnce.and.calledWith(callParams(path, expectedHttpMethod, data));
          });
      });
    });

    describe('deleteInboundSamlConfig()', () => {
      const providerId = 'saml.provider';
      const path = handler.path('v2', `/inboundSamlConfigs/${providerId}`, 'project_id');
      const expectedHttpMethod = 'DELETE';
      const expectedResult = utils.responseFrom({});

      it('should be fulfilled given a valid provider ID', () => {
        const stub = sinon.stub(HttpClient.prototype, 'send').resolves(expectedResult);
        stubs.push(stub);

        const requestHandler = handler.init(mockApp);
        return requestHandler.deleteInboundSamlConfig(providerId)
          .then((result) => {
            expect(result).to.be.undefined;
            expect(stub).to.have.been.calledOnce.and.calledWith(callParams(path, expectedHttpMethod, {}));
          });
      });

      const invalidProviderIds = [
        null, NaN, 0, 1, true, false, '', 'oidc.provider', ['saml.provider'], [], {}, { a: 1 }, _.noop];
      invalidProviderIds.forEach((invalidProviderId) => {
        it('should be rejected given an invalid provider ID:' + JSON.stringify(invalidProviderId), () => {
          const expectedError = new FirebaseAuthError(AuthClientErrorCode.INVALID_PROVIDER_ID);

          const requestHandler = handler.init(mockApp);
          return requestHandler.deleteInboundSamlConfig(invalidProviderId as any)
            .then(() => {
              throw new Error('Unexpected success');
            }, (error) => {
              expect(error).to.deep.include(expectedError);
            });
        });
      });

      it('should be rejected given a backend error', () => {
        const expectedError = new FirebaseAuthError(AuthClientErrorCode.CONFIGURATION_NOT_FOUND);
        const expectedServerError = utils.errorFrom({
          error: {
            message: 'CONFIGURATION_NOT_FOUND',
          },
        });
        const stub = sinon.stub(HttpClient.prototype, 'send').rejects(expectedServerError);
        stubs.push(stub);

        const requestHandler = handler.init(mockApp);
        return requestHandler.deleteInboundSamlConfig(providerId)
          .then(() => {
            throw new Error('Unexpected success');
          }, (error) => {
            expect(error).to.deep.include(expectedError);
            expect(stub).to.have.been.calledOnce.and.calledWith(callParams(path, expectedHttpMethod, {}));
          });
      });
    });

    describe('createInboundSamlConfig', () => {
      const providerId = 'saml.provider';
      const path = handler.path('v2', `/inboundSamlConfigs?inboundSamlConfigId=${providerId}`, 'project_id');
      const expectedHttpMethod = 'POST';
      const configOptions = {
        providerId,
        displayName: 'SAML_DISPLAY_NAME',
        enabled: true,
        idpEntityId: 'IDP_ENTITY_ID',
        ssoURL: 'https://example.com/login',
        x509Certificates: ['CERT1', 'CERT2'],
        rpEntityId: 'RP_ENTITY_ID',
        callbackURL: 'https://projectId.firebaseapp.com/__/auth/handler',
        enableRequestSigning: true,
      };
      const expectedRequest = {
        idpConfig: {
          idpEntityId: 'IDP_ENTITY_ID',
          ssoUrl: 'https://example.com/login',
          signRequest: true,
          idpCertificates: [
            { x509Certificate: 'CERT1' },
            { x509Certificate: 'CERT2' },
          ],
        },
        spConfig: {
          spEntityId: 'RP_ENTITY_ID',
          callbackUri: 'https://projectId.firebaseapp.com/__/auth/handler',
        },
        displayName: 'SAML_DISPLAY_NAME',
        enabled: true,
      };
      const expectedResult = utils.responseFrom(deepExtend({
        name: 'projects/project1/inboundSamlConfigs/saml.provider',
      }, expectedRequest));

      it('should be fulfilled given valid parameters', () => {
        const stub = sinon.stub(HttpClient.prototype, 'send').resolves(expectedResult);
        stubs.push(stub);

        const requestHandler = handler.init(mockApp);
        return requestHandler.createInboundSamlConfig(configOptions)
          .then((response) => {
            expect(response).to.deep.equal(expectedResult.data);
            expect(stub).to.have.been.calledOnce.and.calledWith(
              callParams(path, expectedHttpMethod, expectedRequest));
          });
      });

      it('should be rejected given invalid parameters', () => {
        const expectedError = new FirebaseAuthError(
          AuthClientErrorCode.INVALID_CONFIG,
          '"SAMLAuthProviderConfig.callbackURL" must be a valid URL string.',
        );
        const invalidOptions: SAMLAuthProviderConfig = deepCopy(configOptions);
        invalidOptions.callbackURL = 'invalid';

        const requestHandler = handler.init(mockApp);
        return requestHandler.createInboundSamlConfig(invalidOptions)
          .then(() => {
            throw new Error('Unexpected success');
          }, (error) => {
            expect(error).to.deep.include(expectedError);
          });
      });

      it('should be rejected when the backend returns a response missing name', () => {
        const expectedError = new FirebaseAuthError(
          AuthClientErrorCode.INTERNAL_ERROR,
          'INTERNAL ASSERT FAILED: Unable to create new SAML configuration',
        );
        const stub = sinon.stub(HttpClient.prototype, 'send').resolves(utils.responseFrom({}));
        stubs.push(stub);

        const requestHandler = handler.init(mockApp);
        return requestHandler.createInboundSamlConfig(configOptions)
          .then(() => {
            throw new Error('Unexpected success');
          }, (error) => {
            expect(error).to.deep.include(expectedError);
            expect(stub).to.have.been.calledOnce.and.calledWith(
              callParams(path, expectedHttpMethod, expectedRequest));
          });
      });

      it('should be rejected when the backend returns an error', () => {
        const expectedServerError = utils.errorFrom({
          error: {
            message: 'INVALID_CONFIG',
          },
        });
        const expectedError = new FirebaseAuthError(AuthClientErrorCode.INVALID_CONFIG);
        const stub = sinon.stub(HttpClient.prototype, 'send').rejects(expectedServerError);
        stubs.push(stub);

        const requestHandler = handler.init(mockApp);
        return requestHandler.createInboundSamlConfig(configOptions)
          .then(() => {
            throw new Error('Unexpected success');
          }, (error) => {
            expect(error).to.deep.include(expectedError);
            expect(stub).to.have.been.calledOnce.and.calledWith(
              callParams(path, expectedHttpMethod, expectedRequest));
          });
      });
    });

    describe('updateInboundSamlConfig()', () => {
      const providerId = 'saml.provider';
      const path = handler.path('v2', `/inboundSamlConfigs/${providerId}`, 'project_id');

      const expectedHttpMethod = 'PATCH';
      const configOptions = {
        idpEntityId: 'IDP_ENTITY_ID',
        ssoURL: 'https://example.com/login',
        x509Certificates: ['CERT1', 'CERT2'],
        rpEntityId: 'RP_ENTITY_ID',
        callbackURL: 'https://projectId.firebaseapp.com/__/auth/handler',
        enableRequestSigning: true,
        enabled: true,
        displayName: 'samlProviderName',
      };
      const expectedRequest = {
        idpConfig: {
          idpEntityId: 'IDP_ENTITY_ID',
          ssoUrl: 'https://example.com/login',
          signRequest: true,
          idpCertificates: [
            { x509Certificate: 'CERT1' },
            { x509Certificate: 'CERT2' },
          ],
        },
        spConfig: {
          spEntityId: 'RP_ENTITY_ID',
          callbackUri: 'https://projectId.firebaseapp.com/__/auth/handler',
        },
        displayName: 'samlProviderName',
        enabled: true,
      };
      const expectedResult = utils.responseFrom(deepExtend({
        name: `projects/project_id/inboundSamlConfigs/${providerId}`,
      }, expectedRequest));
      const expectedPartialResult = utils.responseFrom(deepExtend({
        name: `projects/project_id/inboundSamlConfigs/${providerId}`,
      }, {
        idpConfig: {
          idpEntityId: 'IDP_ENTITY_ID',
          ssoUrl: 'https://example.com/login2',
          signRequest: true,
          idpCertificates: [
            { x509Certificate: 'CERT1' },
            { x509Certificate: 'CERT2' },
          ],
        },
        spConfig: {
          spEntityId: 'RP_ENTITY_ID2',
          callbackUri: 'https://projectId.firebaseapp.com/__/auth/handler',
        },
        displayName: 'samlProviderName',
        enabled: false,
      }));
      const fullUpadateMask =
          'enabled,displayName,idpConfig.idpEntityId,idpConfig.ssoUrl,' +
          'idpConfig.signRequest,idpConfig.idpCertificates,spConfig.spEntityId,spConfig.callbackUri';

      it('should be fulfilled given full parameters', () => {
        const expectedPath = path + `?updateMask=${fullUpadateMask}`;
        const stub = sinon.stub(HttpClient.prototype, 'send').resolves(expectedResult);
        stubs.push(stub);

        const requestHandler = handler.init(mockApp);
        return requestHandler.updateInboundSamlConfig(providerId, configOptions)
          .then((response) => {
            expect(response).to.deep.equal(expectedResult.data);
            expect(stub).to.have.been.calledOnce.and.calledWith(
              callParams(expectedPath, expectedHttpMethod, expectedRequest));
          });
      });

      it('should be fulfilled given partial parameters', () => {
        const expectedPath = path + '?updateMask=enabled,idpConfig.ssoUrl,spConfig.spEntityId';
        const stub = sinon.stub(HttpClient.prototype, 'send').resolves(expectedPartialResult);
        const partialConfigOptions = {
          ssoURL: 'https://example.com/login2',
          rpEntityId: 'RP_ENTITY_ID2',
          enabled: false,
        };
        const partialRequest: SAMLConfigServerResponse = {
          idpConfig: {
            idpEntityId: undefined,
            ssoUrl: 'https://example.com/login2',
            signRequest: undefined,
            idpCertificates: undefined,
          },
          spConfig: {
            spEntityId: 'RP_ENTITY_ID2',
            callbackUri: undefined,
          },
          displayName: undefined,
          enabled: false,
        };
        stubs.push(stub);

        const requestHandler = handler.init(mockApp);
        return requestHandler.updateInboundSamlConfig(providerId, partialConfigOptions)
          .then((response) => {
            expect(response).to.deep.equal(expectedPartialResult.data);
            expect(stub).to.have.been.calledOnce.and.calledWith(
              callParams(expectedPath, expectedHttpMethod, partialRequest));
          });
      });

      it('should be fulfilled given single parameter to change', () => {
        const expectedPath = path + '?updateMask=idpConfig.ssoUrl';
        const stub = sinon.stub(HttpClient.prototype, 'send').resolves(expectedPartialResult);
        const partialConfigOptions = {
          ssoURL: 'https://example.com/login2',
        };
        const partialRequest: SAMLConfigServerResponse = {
          idpConfig: {
            idpEntityId: undefined,
            ssoUrl: 'https://example.com/login2',
            signRequest: undefined,
            idpCertificates: undefined,
          },
          displayName: undefined,
          enabled: undefined,
        };
        stubs.push(stub);

        const requestHandler = handler.init(mockApp);
        return requestHandler.updateInboundSamlConfig(providerId, partialConfigOptions)
          .then((response) => {
            expect(response).to.deep.equal(expectedPartialResult.data);
            expect(stub).to.have.been.calledOnce.and.calledWith(
              callParams(expectedPath, expectedHttpMethod, partialRequest));
          });
      });

      const invalidProviderIds = [
        null, NaN, 0, 1, true, false, '', 'oidc.provider', ['saml.provider'], [], {}, { a: 1 }, _.noop];
      invalidProviderIds.forEach((invalidProviderId) => {
        it('should be rejected given an invalid provider ID:' + JSON.stringify(invalidProviderId), () => {
          const expectedError = new FirebaseAuthError(AuthClientErrorCode.INVALID_PROVIDER_ID);

          const requestHandler = handler.init(mockApp);
          return requestHandler.updateInboundSamlConfig(invalidProviderId as any, configOptions)
            .then(() => {
              throw new Error('Unexpected success');
            }, (error) => {
              expect(error).to.deep.include(expectedError);
            });
        });
      });

      it('should be rejected given invalid parameters', () => {
        const expectedError = new FirebaseAuthError(
          AuthClientErrorCode.INVALID_CONFIG,
          '"SAMLAuthProviderConfig.ssoURL" must be a valid URL string.',
        );
        const invalidOptions: SAMLUpdateAuthProviderRequest = deepCopy(configOptions);
        invalidOptions.ssoURL = 'invalid';

        const requestHandler = handler.init(mockApp);
        return requestHandler.updateInboundSamlConfig(providerId, invalidOptions)
          .then(() => {
            throw new Error('Unexpected success');
          }, (error) => {
            expect(error).to.deep.include(expectedError);
          });
      });

      it('should be rejected when the backend returns a response missing name', () => {
        const expectedPath = path + `?updateMask=${fullUpadateMask}`;
        const expectedError = new FirebaseAuthError(
          AuthClientErrorCode.INTERNAL_ERROR,
          'INTERNAL ASSERT FAILED: Unable to update SAML configuration',
        );
        const stub = sinon.stub(HttpClient.prototype, 'send').resolves(utils.responseFrom({}));
        stubs.push(stub);

        const requestHandler = handler.init(mockApp);
        return requestHandler.updateInboundSamlConfig(providerId, configOptions)
          .then(() => {
            throw new Error('Unexpected success');
          }, (error) => {
            expect(error).to.deep.include(expectedError);
            expect(stub).to.have.been.calledOnce.and.calledWith(
              callParams(expectedPath, expectedHttpMethod, expectedRequest));
          });
      });

      it('should be rejected when the backend returns an error', () => {
        const expectedPath = path + `?updateMask=${fullUpadateMask}`;
        const expectedServerError = utils.errorFrom({
          error: {
            message: 'INVALID_CONFIG',
          },
        });
        const expectedError = new FirebaseAuthError(AuthClientErrorCode.INVALID_CONFIG);
        const stub = sinon.stub(HttpClient.prototype, 'send').rejects(expectedServerError);
        stubs.push(stub);

        const requestHandler = handler.init(mockApp);
        return requestHandler.updateInboundSamlConfig(providerId, configOptions)
          .then(() => {
            throw new Error('Unexpected success');
          }, (error) => {
            expect(error).to.deep.include(expectedError);
            expect(stub).to.have.been.calledOnce.and.calledWith(
              callParams(expectedPath, expectedHttpMethod, expectedRequest));
          });
      });
    });

    if (handler.supportsTenantManagement) {
      describe('getProjectConfig', () => {
        const path = '/v2/projects/project_id/config';
        const method = 'GET';
        const expectedResult = utils.responseFrom({
          name: 'projects/project_id/config',
        });

        afterEach(() => {
          delete process.env.FIREBASE_AUTH_EMULATOR_HOST;
        });

        it('should be fulfilled with the project config response', () => {
          const stub = sinon.stub(HttpClient.prototype, 'send').resolves(expectedResult);
          stubs.push(stub);

          const requestHandler = handler.init(mockApp) as AuthRequestHandler;
          return requestHandler.getProjectConfig()
            .then((result) => {
              expect(result).to.deep.equal(expectedResult.data);
              expect(stub).to.have.been.calledOnce.and.calledWith(callParams(path, method, {}));
            });
        });

        it('should be rejected when the response is missing the name field', () => {
          const stub = sinon.stub(HttpClient.prototype, 'send').resolves(utils.responseFrom({}));
          stubs.push(stub);

          const requestHandler = handler.init(mockApp) as AuthRequestHandler;
          return requestHandler.getProjectConfig()
            .then(() => {
              throw new Error('Unexpected success');
            }, (error) => {
              expect(error).to.have.property('code', 'auth/internal-error');
              expect(error.message).to.equal('INTERNAL ASSERT FAILED: Unable to get project config');
            });
        });

        it('should be fulfilled when the response is missing the name field and the emulator is running', () => {
          const emulatorHost = 'localhost:9099';
          process.env.FIREBASE_AUTH_EMULATOR_HOST = emulatorHost;
          const stub = sinon.stub(HttpClient.prototype, 'send').resolves(utils.responseFrom({}));
          stubs.push(stub);

          const requestHandler = handler.init(mockApp) as AuthRequestHandler;
          return requestHandler.getProjectConfig()
            .then((result) => {
              expect(result).to.deep.equal({});
              expect(stub).to.have.been.calledOnce.and.calledWith({
                method,
                url: `http://${emulatorHost}/identitytoolkit.googleapis.com${path}`,
                headers: expectedHeadersEmulator,
                data: {},
                timeout,
              });
            });
        });
      });

      describe('updateProjectConfig', () => {
        const path = '/v2/projects/project_id/config';
        const method = 'PATCH';
        const validRequest: UpdateProjectConfigRequest = {
          smsRegionConfig: {
            allowlistOnly: {
              allowedRegions: ['AC', 'AD'],
            },
          },
        };
        const expectedPath = path + '?updateMask=smsRegionConfig.allowlistOnly.allowedRegions';
        const expectedResult = utils.responseFrom({
          name: 'projects/project_id/config',
        });

        afterEach(() => {
          delete process.env.FIREBASE_AUTH_EMULATOR_HOST;
        });

        it('should be fulfilled with the updated project config response', () => {
          const stub = sinon.stub(HttpClient.prototype, 'send').resolves(expectedResult);
          stubs.push(stub);

          const requestHandler = handler.init(mockApp) as AuthRequestHandler;
          return requestHandler.updateProjectConfig(validRequest)
            .then((result) => {
              expect(result).to.deep.equal(expectedResult.data);
              expect(stub).to.have.been.calledOnce.and.calledWith(
                callParams(expectedPath, method, validRequest));
            });
        });

        it('should be rejected when the response is missing the name field', () => {
          const stub = sinon.stub(HttpClient.prototype, 'send').resolves(utils.responseFrom({}));
          stubs.push(stub);

          const requestHandler = handler.init(mockApp) as AuthRequestHandler;
          return requestHandler.updateProjectConfig(validRequest)
            .then(() => {
              throw new Error('Unexpected success');
            }, (error) => {
              expect(error).to.have.property('code', 'auth/internal-error');
              expect(error.message).to.equal('INTERNAL ASSERT FAILED: Unable to update project config');
            });
        });

        it('should be fulfilled when the response is missing the name field and the emulator is running', () => {
          const emulatorHost = 'localhost:9099';
          process.env.FIREBASE_AUTH_EMULATOR_HOST = emulatorHost;
          const stub = sinon.stub(HttpClient.prototype, 'send').resolves(utils.responseFrom({}));
          stubs.push(stub);

          const requestHandler = handler.init(mockApp) as AuthRequestHandler;
          return requestHandler.updateProjectConfig(validRequest)
            .then((result) => {
              expect(result).to.deep.equal({});
              expect(stub).to.have.been.calledOnce.and.calledWith({
                method,
                url: `http://${emulatorHost}/identitytoolkit.googleapis.com${expectedPath}`,
                headers: expectedHeadersEmulator,
                data: validRequest,
                timeout,
              });
            });
        });
      });

      describe('getTenant', () => {
        const path = '/v2/projects/project_id/tenants/tenant-id';
        const method = 'GET';
        const tenantId = 'tenant-id';
        const expectedResult = utils.responseFrom({
          name: 'projects/project_id/tenants/tenant-id',
        });

        it('should be fulfilled given a valid tenant ID', () => {
          const stub = sinon.stub(HttpClient.prototype, 'send').resolves(expectedResult);
          stubs.push(stub);

          const requestHandler = handler.init(mockApp) as AuthRequestHandler;
          return requestHandler.getTenant(tenantId)
            .then((result) => {
              expect(result).to.deep.include(expectedResult.data);
              expect(stub).to.have.been.calledOnce.and.calledWith(callParams(path, method, {}));
            });
        });

        const invalidTenantIds = [null, NaN, 0, 1, true, false, '', ['tenant-id'], [], {}, { a: 1 }, _.noop];
        invalidTenantIds.forEach((invalidTenantId) => {
          it('should be rejected given an invalid tenant ID:' + JSON.stringify(invalidTenantId), () => {
            const expectedError = new FirebaseAuthError(AuthClientErrorCode.INVALID_TENANT_ID);

            const requestHandler = handler.init(mockApp) as AuthRequestHandler;
            return requestHandler.getTenant(invalidTenantId as any)
              .then(() => {
                throw new Error('Unexpected success');
              }, (error) => {
                expect(error).to.deep.include(expectedError);
              });
          });
        });

        it('should be rejected given a backend error', () => {
          const expectedError = new FirebaseAuthError(AuthClientErrorCode.TENANT_NOT_FOUND);
          const expectedServerError = utils.errorFrom({
            error: {
              message: 'TENANT_NOT_FOUND',
            },
          });
          const stub = sinon.stub(HttpClient.prototype, 'send').rejects(expectedServerError);
          stubs.push(stub);

          const requestHandler = handler.init(mockApp) as AuthRequestHandler;
          return requestHandler.getTenant(tenantId)
            .then(() => {
              throw new Error('Unexpected success');
            }, (error) => {
              expect(error).to.deep.include(expectedError);
              expect(stub).to.have.been.calledOnce.and.calledWith(callParams(path, method, {}));
            });
        });
      });

      describe('listTenants', () => {
        const path = '/v2/projects/project_id/tenants';
        const method = 'GET';
        const nextPageToken = 'PAGE_TOKEN';
        const maxResults = 500;
        const expectedResult = utils.responseFrom({
          tenants : [
            { name: 'projects/project_id/tenants/tenant-id1' },
            { name: 'projects/project_id/tenants/tenant-id2' },
          ],
          nextPageToken: 'NEXT_PAGE_TOKEN',
        });

        it('should be fulfilled given valid parameters', () => {
          const data = {
            pageSize: maxResults,
            pageToken: nextPageToken,
          };
          const stub = sinon.stub(HttpClient.prototype, 'send').resolves(expectedResult);
          stubs.push(stub);

          const requestHandler = handler.init(mockApp) as AuthRequestHandler;
          return requestHandler.listTenants(maxResults, nextPageToken)
            .then((result) => {
              expect(result).to.deep.equal(expectedResult.data);
              expect(stub).to.have.been.calledOnce.and.calledWith(callParams(path, method, data));
            });
        });

        it('should be fulfilled with empty tenant array when no tenants exist', () => {
          const data = {
            pageSize: maxResults,
            pageToken: nextPageToken,
          };
          const stub = sinon.stub(HttpClient.prototype, 'send').resolves(utils.responseFrom({}));
          stubs.push(stub);

          const requestHandler = handler.init(mockApp) as AuthRequestHandler;
          return requestHandler.listTenants(maxResults, nextPageToken)
            .then((result) => {
              expect(result).to.deep.equal({ tenants: [] });
              expect(stub).to.have.been.calledOnce.and.calledWith(callParams(path, method, data));
            });
        });

        it('should be fulfilled given no parameters', () => {
          // Default maxResults should be used.
          const data = {
            pageSize: 1000,
          };
          const stub = sinon.stub(HttpClient.prototype, 'send').resolves(expectedResult);
          stubs.push(stub);

          const requestHandler = handler.init(mockApp) as AuthRequestHandler;
          return requestHandler.listTenants()
            .then((result) => {
              expect(result).to.deep.equal(expectedResult.data);
              expect(stub).to.have.been.calledOnce.and.calledWith(callParams(path, method, data));
            });
        });

        it('should be rejected given an invalid maxResults', () => {
          const expectedError = new FirebaseAuthError(
            AuthClientErrorCode.INVALID_ARGUMENT,
            'Required "maxResults" must be a positive non-zero number that does not ' +
            'exceed the allowed 1000.',
          );

          const requestHandler = handler.init(mockApp) as AuthRequestHandler;
          return requestHandler.listTenants(1001, nextPageToken)
            .then(() => {
              throw new Error('Unexpected success');
            }, (error) => {
              expect(error).to.deep.include(expectedError);
            });
        });

        it('should be rejected given an invalid next page token', () => {
          const expectedError = new FirebaseAuthError(
            AuthClientErrorCode.INVALID_PAGE_TOKEN,
          );

          const requestHandler = handler.init(mockApp) as AuthRequestHandler;
          return requestHandler.listTenants(maxResults, '')
            .then(() => {
              throw new Error('Unexpected success');
            }, (error) => {
              expect(error).to.deep.include(expectedError);
            });
        });

        it('should be rejected when the backend returns an error', () => {
          const expectedServerError = utils.errorFrom({
            error: {
              message: 'INVALID_PAGE_SELECTION',
            },
          });
          const expectedError = FirebaseAuthError.fromServerError('INVALID_PAGE_SELECTION');
          const data = {
            pageSize: maxResults,
            pageToken: nextPageToken,
          };
          const stub = sinon.stub(HttpClient.prototype, 'send').rejects(expectedServerError);
          stubs.push(stub);

          const requestHandler = handler.init(mockApp) as AuthRequestHandler;
          return requestHandler.listTenants(maxResults, nextPageToken)
            .then(() => {
              throw new Error('Unexpected success');
            }, (error) => {
              expect(error).to.deep.include(expectedError);
              expect(stub).to.have.been.calledOnce.and.calledWith(callParams(path, method, data));
            });
        });
      });

      describe('deleteTenant', () => {
        const path = '/v2/projects/project_id/tenants/tenant-id';
        const method = 'DELETE';
        const tenantId = 'tenant-id';
        const expectedResult = utils.responseFrom({});

        it('should be fulfilled given a valid tenant ID', () => {
          const stub = sinon.stub(HttpClient.prototype, 'send').resolves(expectedResult);
          stubs.push(stub);

          const requestHandler = handler.init(mockApp) as AuthRequestHandler;
          return requestHandler.deleteTenant(tenantId)
            .then((result) => {
              expect(result).to.be.undefined;
              expect(stub).to.have.been.calledOnce.and.calledWith(callParams(path, method, undefined));
            });
        });

        const invalidTenantIds = [null, NaN, 0, 1, true, false, '', ['tenant-id'], [], {}, { a: 1 }, _.noop];
        invalidTenantIds.forEach((invalidTenantId) => {
          it('should be rejected given an invalid tenant ID:' + JSON.stringify(invalidTenantId), () => {
            const expectedError = new FirebaseAuthError(AuthClientErrorCode.INVALID_TENANT_ID);

            const requestHandler = handler.init(mockApp) as AuthRequestHandler;
            return requestHandler.deleteTenant(invalidTenantId as any)
              .then(() => {
                throw new Error('Unexpected success');
              }, (error) => {
                expect(error).to.deep.include(expectedError);
              });
          });
        });

        it('should be rejected given a backend error', () => {
          const expectedError = new FirebaseAuthError(AuthClientErrorCode.TENANT_NOT_FOUND);
          const expectedServerError = utils.errorFrom({
            error: {
              message: 'TENANT_NOT_FOUND',
            },
          });
          const stub = sinon.stub(HttpClient.prototype, 'send').rejects(expectedServerError);
          stubs.push(stub);

          const requestHandler = handler.init(mockApp) as AuthRequestHandler;
          return requestHandler.deleteTenant(tenantId)
            .then(() => {
              throw new Error('Unexpected success');
            }, (error) => {
              expect(error).to.deep.include(expectedError);
              expect(stub).to.have.been.calledOnce.and.calledWith(callParams(path, method, undefined));
            });
        });
      });

      describe('createTenant', () => {
        const path = '/v2/projects/project_id/tenants';
        const postMethod = 'POST';
        const tenantOptions: CreateTenantRequest = {
          displayName: 'TENANT-DISPLAY-NAME',
          emailSignInConfig: {
            enabled: true,
            passwordRequired: true,
          },
          multiFactorConfig: {
            state: 'ENABLED',
            factorIds: ['phone'],
          },
          testPhoneNumbers: {
            '+16505551234': '019287',
            '+16505550676': '985235',
          },
        };
        const expectedRequest = {
          displayName: 'TENANT-DISPLAY-NAME',
          allowPasswordSignup: true,
          enableEmailLinkSignin: false,
          mfaConfig: {
            state: 'ENABLED',
            enabledProviders: ['PHONE_SMS'],
          },
          testPhoneNumbers: {
            '+16505551234': '019287',
            '+16505550676': '985235',
          },
        };
        const expectedResult = utils.responseFrom(deepExtend({
          name: 'projects/project_id/tenants/tenant-id',
        }, expectedRequest));

        it('should be fulfilled given valid parameters', () => {
          const stub = sinon.stub(HttpClient.prototype, 'send').resolves(expectedResult);
          stubs.push(stub);

          const requestHandler = handler.init(mockApp) as AuthRequestHandler;
          return requestHandler.createTenant(tenantOptions)
            .then((actualResult) => {
              expect(actualResult).to.be.deep.equal(expectedResult.data);
              expect(stub).to.have.been.calledOnce.and.calledWith(callParams(path, postMethod, expectedRequest));
            });
        });

        it('should be rejected given invalid parameters', () => {
          const expectedError = new FirebaseAuthError(
            AuthClientErrorCode.INVALID_ARGUMENT,
            '"EmailSignInConfig" must be a non-null object.',
          );
          const invalidOptions = deepCopy(tenantOptions);
          invalidOptions.emailSignInConfig = 'invalid' as any;

          const requestHandler = handler.init(mockApp) as AuthRequestHandler;
          return requestHandler.createTenant(invalidOptions)
            .then(() => {
              throw new Error('Unexpected success');
            }, (error) => {
              expect(error).to.deep.include(expectedError);
            });
        });

        it('should be rejected when the backend returns a response missing name', () => {
          const expectedError = new FirebaseAuthError(
            AuthClientErrorCode.INTERNAL_ERROR,
            'INTERNAL ASSERT FAILED: Unable to create new tenant',
          );
          const stub = sinon.stub(HttpClient.prototype, 'send').resolves(utils.responseFrom({}));
          stubs.push(stub);

          const requestHandler = handler.init(mockApp) as AuthRequestHandler;
          return requestHandler.createTenant(tenantOptions)
            .then(() => {
              throw new Error('Unexpected success');
            }, (error) => {
              expect(error).to.deep.include(expectedError);
              expect(stub).to.have.been.calledOnce.and.calledWith(callParams(path, postMethod, expectedRequest));
            });
        });

        it('should be rejected when the backend returns a response missing tenant ID in response name', () => {
          const expectedError = new FirebaseAuthError(
            AuthClientErrorCode.INTERNAL_ERROR,
            'INTERNAL ASSERT FAILED: Unable to create new tenant',
          );
          // Resource name should have /tenants/tenant-id in path. This should throw an error.
          const stub = sinon.stub(HttpClient.prototype, 'send')
            .resolves(utils.responseFrom({ name: 'projects/project_id' }));
          stubs.push(stub);

          const requestHandler = handler.init(mockApp) as AuthRequestHandler;
          return requestHandler.createTenant(tenantOptions)
            .then(() => {
              throw new Error('Unexpected success');
            }, (error) => {
              expect(error).to.deep.include(expectedError);
              expect(stub).to.have.been.calledOnce.and.calledWith(callParams(path, postMethod, expectedRequest));
            });
        });

        it('should be rejected when the backend returns an error', () => {
          const expectedServerError = utils.errorFrom({
            error: {
              message: 'INTERNAL_ERROR',
            },
          });
          const expectedError = new FirebaseAuthError(
            AuthClientErrorCode.INTERNAL_ERROR,
            'An internal error has occurred. Raw server response: ' +
            `"${JSON.stringify(expectedServerError.response.data)}"`,
          );
          const stub = sinon.stub(HttpClient.prototype, 'send').rejects(expectedServerError);
          stubs.push(stub);

          const requestHandler = handler.init(mockApp) as AuthRequestHandler;
          return requestHandler.createTenant(tenantOptions)
            .then(() => {
              throw new Error('Unexpected success');
            }, (error) => {
              expect(error).to.deep.include(expectedError);
              expect(stub).to.have.been.calledOnce.and.calledWith(callParams(path, postMethod, expectedRequest));
            });
        });
      });

      describe('updateTenant', () => {
        const path = '/v2/projects/project_id/tenants/tenant-id';
        const patchMethod = 'PATCH';
        const tenantId = 'tenant-id';
        const tenantOptions: UpdateTenantRequest = {
          displayName: 'TENANT-DISPLAY-NAME',
          emailSignInConfig: {
            enabled: true,
            passwordRequired: true,
          },
          multiFactorConfig: {
            state: 'ENABLED',
            factorIds: ['phone'],
          },
          testPhoneNumbers: {
            '+16505551234': '019287',
            '+16505550676': '985235',
          },
        };
        const expectedRequest = {
          displayName: 'TENANT-DISPLAY-NAME',
          allowPasswordSignup: true,
          enableEmailLinkSignin: false,
          mfaConfig: {
            state: 'ENABLED',
            enabledProviders: ['PHONE_SMS'],
          },
          testPhoneNumbers: {
            '+16505551234': '019287',
            '+16505550676': '985235',
          },
        };
        const expectedResult = utils.responseFrom(deepExtend({
          name: 'projects/project_id/tenants/tenant-id',
        }, expectedRequest));

        it('should be fulfilled given full parameters', () => {
          const expectedPath = path + '?updateMask=allowPasswordSignup,enableEmailLinkSignin,displayName,' +
            'mfaConfig.state,mfaConfig.enabledProviders,testPhoneNumbers';
          const stub = sinon.stub(HttpClient.prototype, 'send').resolves(expectedResult);
          stubs.push(stub);

          const requestHandler = handler.init(mockApp) as AuthRequestHandler;
          return requestHandler.updateTenant(tenantId, tenantOptions)
            .then((actualResult) => {
              expect(actualResult).to.deep.equal(expectedResult.data);
              expect(stub).to.have.been.calledOnce.and.calledWith(
                callParams(expectedPath, patchMethod, expectedRequest));
            });
        });

        it('should be fulfilled given partial parameters', () => {
          const expectedPath = path + '?updateMask=allowPasswordSignup';
          const stub = sinon.stub(HttpClient.prototype, 'send').resolves(expectedResult);
          const partialRequest = {
            allowPasswordSignup: true,
          };
          const partialTenantOptions = {
            emailSignInConfig: { enabled: true },
          };
          stubs.push(stub);

          const requestHandler = handler.init(mockApp) as AuthRequestHandler;
          return requestHandler.updateTenant(tenantId, partialTenantOptions)
            .then((actualResult) => {
              expect(actualResult).to.deep.equal(expectedResult.data);
              expect(stub).to.have.been.calledOnce.and.calledWith(
                callParams(expectedPath, patchMethod, partialRequest));
            });
        });

        it('should be fulfilled given a single parameter to change', () => {
          const expectedPath = path + '?updateMask=displayName';
          const stub = sinon.stub(HttpClient.prototype, 'send').resolves(expectedResult);
          const partialRequest = {
            displayName: 'TENANT_DISPLAY_NAME',
          };
          const partialTenantOptions = {
            displayName: 'TENANT_DISPLAY_NAME',
          };
          stubs.push(stub);

          const requestHandler = handler.init(mockApp) as AuthRequestHandler;
          return requestHandler.updateTenant(tenantId, partialTenantOptions)
            .then((actualResult) => {
              expect(actualResult).to.deep.equal(expectedResult.data);
              expect(stub).to.have.been.calledOnce.and.calledWith(
                callParams(expectedPath, patchMethod, partialRequest));
            });
        });

        const invalidTenantIds = [null, NaN, 0, 1, true, false, '', ['tenant-id'], [], {}, { a: 1 }, _.noop];
        invalidTenantIds.forEach((invalidTenantId) => {
          it('should be rejected given an invalid tenant ID:' + JSON.stringify(invalidTenantId), () => {
            const expectedError = new FirebaseAuthError(AuthClientErrorCode.INVALID_TENANT_ID);

            const requestHandler = handler.init(mockApp) as AuthRequestHandler;
            return requestHandler.updateTenant(invalidTenantId as any, tenantOptions)
              .then(() => {
                throw new Error('Unexpected success');
              }, (error) => {
                expect(error).to.deep.include(expectedError);
              });
          });
        });

        it('should be rejected given invalid parameters', () => {
          const expectedError = new FirebaseAuthError(
            AuthClientErrorCode.INVALID_ARGUMENT,
            '"EmailSignInConfig" must be a non-null object.',
          );
          const invalidOptions = deepCopy(tenantOptions);
          invalidOptions.emailSignInConfig = 'invalid' as any;

          const requestHandler = handler.init(mockApp) as AuthRequestHandler;
          return requestHandler.updateTenant(tenantId, invalidOptions)
            .then(() => {
              throw new Error('Unexpected success');
            }, (error) => {
              expect(error).to.deep.include(expectedError);
            });
        });

        it('should be rejected when the backend returns a response missing name', () => {
          const expectedPath = path + '?updateMask=allowPasswordSignup,enableEmailLinkSignin,displayName,' +
            'mfaConfig.state,mfaConfig.enabledProviders,testPhoneNumbers';
          const expectedError = new FirebaseAuthError(
            AuthClientErrorCode.INTERNAL_ERROR,
            'INTERNAL ASSERT FAILED: Unable to update tenant',
          );
          const stub = sinon.stub(HttpClient.prototype, 'send').resolves(utils.responseFrom({}));
          stubs.push(stub);

          const requestHandler = handler.init(mockApp) as AuthRequestHandler;
          return requestHandler.updateTenant(tenantId, tenantOptions)
            .then(() => {
              throw new Error('Unexpected success');
            }, (error) => {
              expect(error).to.deep.include(expectedError);
              expect(stub).to.have.been.calledOnce.and.calledWith(
                callParams(expectedPath, patchMethod, expectedRequest));
            });
        });

        it('should be rejected when the backend returns a response missing tenant ID in response name', () => {
          const expectedPath = path + '?updateMask=allowPasswordSignup,enableEmailLinkSignin,displayName,' +
            'mfaConfig.state,mfaConfig.enabledProviders,testPhoneNumbers';
          const expectedError = new FirebaseAuthError(
            AuthClientErrorCode.INTERNAL_ERROR,
            'INTERNAL ASSERT FAILED: Unable to update tenant',
          );
          // Resource name should have /tenants/tenant-id in path. This should throw an error.
          const stub = sinon.stub(HttpClient.prototype, 'send')
            .resolves(utils.responseFrom({ name: 'projects/project_id' }));
          stubs.push(stub);

          const requestHandler = handler.init(mockApp) as AuthRequestHandler;
          return requestHandler.updateTenant(tenantId, tenantOptions)
            .then(() => {
              throw new Error('Unexpected success');
            }, (error) => {
              expect(error).to.deep.include(expectedError);
              expect(stub).to.have.been.calledOnce.and.calledWith(
                callParams(expectedPath, patchMethod, expectedRequest));
            });
        });

        it('should be rejected when the backend returns an error', () => {
          const expectedPath = path + '?updateMask=allowPasswordSignup,enableEmailLinkSignin,displayName,' +
            'mfaConfig.state,mfaConfig.enabledProviders,testPhoneNumbers';
          const expectedServerError = utils.errorFrom({
            error: {
              message: 'INTERNAL_ERROR',
            },
          });
          const expectedError = new FirebaseAuthError(
            AuthClientErrorCode.INTERNAL_ERROR,
            'An internal error has occurred. Raw server response: ' +
            `"${JSON.stringify(expectedServerError.response.data)}"`,
          );
          const stub = sinon.stub(HttpClient.prototype, 'send').rejects(expectedServerError);
          stubs.push(stub);

          const requestHandler = handler.init(mockApp) as AuthRequestHandler;
          return requestHandler.updateTenant(tenantId, tenantOptions)
            .then(() => {
              throw new Error('Unexpected success');
            }, (error) => {
              expect(error).to.deep.include(expectedError);
              expect(stub).to.have.been.calledOnce.and.calledWith(
                callParams(expectedPath, patchMethod, expectedRequest));
            });
        });
      });
    }

    describe('non-2xx responses', () => {
      it('should be rejected given a simulated non-2xx response with a known error code', () => {
        const mockErrorResponse = utils.errorFrom({
          error: {
            message: 'USER_NOT_FOUND',
          },
        }, 400);
        const stub = sinon.stub(HttpClient.prototype, 'send').rejects(mockErrorResponse);
        stubs.push(stub);

        const requestHandler = handler.init(mockApp);
        return requestHandler.getAccountInfoByEmail('user@example.com')
          .should.eventually.be.rejected.and.have.property('code', 'auth/user-not-found');
      });

      it('should be rejected given a simulated non-2xx response with an unknown error code', () => {
        const mockErrorResponse = utils.errorFrom({
          error: {
            message: 'UNKNOWN_ERROR_CODE',
          },
        }, 400);
        const stub = sinon.stub(HttpClient.prototype, 'send').rejects(mockErrorResponse);
        stubs.push(stub);

        const requestHandler = handler.init(mockApp);
        return requestHandler.getAccountInfoByEmail('user@example.com')
          .should.eventually.be.rejected.and.have.property('code', 'auth/internal-error');
      });

      it('should be rejected given a simulated non-2xx response with no error code', () => {
        const mockErrorResponse = utils.errorFrom({
          error: {
            foo: 'bar',
          },
        }, 400);
        const stub = sinon.stub(HttpClient.prototype, 'send').rejects(mockErrorResponse);
        stubs.push(stub);

        const requestHandler = handler.init(mockApp);
        return requestHandler.getAccountInfoByEmail('user@example.com')
          .should.eventually.be.rejected.and.have.property('code', 'auth/internal-error');
      });
    });
  });
});