test: add missing tests to dstructs/named-typed-tuple

lib/node_modules/@stdlib/dstructs/named-typed-tuple/test/test.at.js

@@ -0,0 +1,149 @@
+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2026 The Stdlib Authors.
+*
+* 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';
+
+// MODULES //
+
+var tape = require( 'tape' );
+var hasProp = require( '@stdlib/assert/has-property' );
+var isFunction = require( '@stdlib/assert/is-function' );
+var namedtypedtuple = require( './../lib' );
+
+
+// TESTS //
+
+tape( 'main export is a function', function test( t ) {
+	t.ok( true, __filename );
+	t.strictEqual( typeof namedtypedtuple, 'function', 'main export is a function' );
+	t.end();
+});
+
+tape( 'a tuple has an `at` method', function test( t ) {
+	var Point;
+	var p;
+
+	Point = namedtypedtuple( [ 'x', 'y' ] );
+	p = new Point();
+
+	t.strictEqual( hasProp( p, 'at' ), true, 'returns expected value' );
+	t.strictEqual( isFunction( p.at ), true, 'returns expected value' );
+	t.end();
+});
+
+tape( 'the method throws an error if invoked with a `this` context which is not a tuple instance', function test( t ) {
+	var values;
+	var Point;
+	var p;
+	var i;
+
+	Point = namedtypedtuple( [ 'x', 'y' ] );
+	p = new Point( [ 1, 2 ] );
+
+	values = [
+		'5',
+		5,
+		NaN,
+		true,
+		false,
+		null,
+		void 0,
+		{},
+		[],
+		function noop() {}
+	];
+	for ( i = 0; i < values.length; i++ ) {
+		t.throws( badValue( values[i] ), TypeError, 'throws an error when provided '+values[i] );
+	}
+	t.end();
+
+	function badValue( value ) {
+		return function badValue() {
+			return p.at.call( value, 0 );
+		};
+	}
+});
+
+tape( 'the method returns the tuple element at a given index', function test( t ) {
+	var Point;
+	var v;
+	var p;
+
+	Point = namedtypedtuple( [ 'x', 'y', 'z' ] );
+	p = new Point( [ 1, 2, 3 ] );
+
+	v = p.at( 0 );
+	t.strictEqual( v, 1, 'returns expected value' );
+
+	v = p.at( 1 );
+	t.strictEqual( v, 2, 'returns expected value' );
+
+	v = p.at( 2 );
+	t.strictEqual( v, 3, 'returns expected value' );
+
+	// Field values remain unchanged:
+	t.strictEqual( p.x, 1, 'returns expected value' );
+	t.strictEqual( p.y, 2, 'returns expected value' );
+	t.strictEqual( p.z, 3, 'returns expected value' );
+	t.end();
+});
+
+tape( 'the method supports negative indices', function test( t ) {
+	var Point;
+	var v;
+	var p;
+
+	Point = namedtypedtuple( [ 'x', 'y', 'z' ] );
+	p = new Point( [ 1, 2, 3 ] );
+
+	v = p.at( -1 );
+	t.strictEqual( v, 3, 'returns expected value' );
+
+	v = p.at( -2 );
+	t.strictEqual( v, 2, 'returns expected value' );
+
+	v = p.at( -3 );
+	t.strictEqual( v, 1, 'returns expected value' );
+
+	// Field values remain unchanged:
+	t.strictEqual( p.x, 1, 'returns expected value' );
+	t.strictEqual( p.y, 2, 'returns expected value' );
+	t.strictEqual( p.z, 3, 'returns expected value' );
+	t.end();
+});
+
+tape( 'the method returns `undefined` if the index is out of bounds', function test( t ) {
+	var Point;
+	var v;
+	var p;
+
+	Point = namedtypedtuple( [ 'x', 'y', 'z' ] );
+	p = new Point( [ 1, 2, 3 ] );
+
+	v = p.at( 10 );
+	t.strictEqual( v, void 0, 'returns expected value' );
+
+	v = p.at( -10 );
+	t.strictEqual( v, void 0, 'returns expected value' );
+
+	// Field values remain unchanged:
+	t.strictEqual( p.x, 1, 'returns expected value' );
+	t.strictEqual( p.y, 2, 'returns expected value' );
+	t.strictEqual( p.z, 3, 'returns expected value' );
+	t.end();
+});

lib/node_modules/@stdlib/dstructs/named-typed-tuple/test/test.entries.js

@@ -0,0 +1,189 @@
+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2026 The Stdlib Authors.
+*
+* 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';
+
+// MODULES //
+
+var tape = require( 'tape' );
+var hasOwnProp = require( '@stdlib/assert/has-own-property' );
+var isFunction = require( '@stdlib/assert/is-function' );
+var hasIteratorSymbolSupport = require( '@stdlib/assert/has-iterator-symbol-support' );
+var ITERATOR_SYMBOL = require( '@stdlib/symbol/iterator' );
+var namedtypedtuple = require( './../lib' );
+
+
+// VARIABLES //
+
+var HAS_ITERATOR_SYMBOL = hasIteratorSymbolSupport();
+
+
+// TESTS //
+
+tape( 'main export is a function', function test( t ) {
+	t.ok( true, __filename );
+	t.strictEqual( typeof namedtypedtuple, 'function', 'main export is a function' );
+	t.end();
+});
+
+tape( 'a tuple has an `entries` method', function test( t ) {
+	var Point;
+	var p;
+
+	Point = namedtypedtuple( [ 'x', 'y' ] );
+	p = new Point();
+
+	t.strictEqual( hasOwnProp( p, 'entries' ), true, 'returns expected value' );
+	t.strictEqual( isFunction( p.entries ), true, 'returns expected value' );
+	t.end();
+});
+
+tape( 'the method throws an error if invoked with a `this` context which is not a tuple instance', function test( t ) {
+	var values;
+	var Point;
+	var p;
+	var i;
+
+	Point = namedtypedtuple( [ 'x', 'y' ] );
+	p = new Point( [ 1, 2 ] );
+
+	values = [
+		'5',
+		5,
+		NaN,
+		true,
+		false,
+		null,
+		void 0,
+		{},
+		[],
+		function noop() {}
+	];
+	for ( i = 0; i < values.length; i++ ) {
+		t.throws( badValue( values[i] ), TypeError, 'throws an error when provided '+values[i] );
+	}
+	t.end();
+
+	function badValue( value ) {
+		return function badValue() {
+			return p.entries.call( value );
+		};
+	}
+});
+
+tape( 'the method returns an iterator protocol-compliant object which iterates over tuple key-value pairs', function test( t ) {
+	var Point;
+	var iter;
+	var v;
+	var p;
+
+	Point = namedtypedtuple( [ 'x', 'y', 'z' ] );
+	p = new Point( [ 10, 20, 30 ] );
+	iter = p.entries();
+
+	v = iter.next();
+	t.strictEqual( v.done, false, 'returns expected value' );
+	t.deepEqual( v.value, [ 0, 'x', 10 ], 'returns expected value' );
+
+	v = iter.next();
+	t.strictEqual( v.done, false, 'returns expected value' );
+	t.deepEqual( v.value, [ 1, 'y', 20 ], 'returns expected value' );
+
+	v = iter.next();
+	t.strictEqual( v.done, false, 'returns expected value' );
+	t.deepEqual( v.value, [ 2, 'z', 30 ], 'returns expected value' );
+
+	v = iter.next();
+	t.strictEqual( v.done, true, 'returns expected value' );
+	t.strictEqual( v.value, void 0, 'returns expected value' );
+
+	t.end();
+});
+
+tape( 'the returned iterator has a `return` method for closing an iterator', function test( t ) {
+	var Point;
+	var iter;
+	var v;
+	var p;
+
+	Point = namedtypedtuple( [ 'x', 'y', 'z' ] );
+	p = new Point( [ 10, 20, 30 ] );
+	iter = p.entries();
+
+	v = iter.next();
+	t.strictEqual( v.done, false, 'returns expected value' );
+
+	v = iter.return();
+	t.strictEqual( v.done, true, 'returns expected value' );
+
+	v = iter.next();
+	t.strictEqual( v.done, true, 'returns expected value' );
+
+	t.end();
+});
+
+tape( 'the returned iterator `return` method supports providing a value', function test( t ) {
+	var Point;
+	var iter;
+	var v;
+	var p;
+
+	Point = namedtypedtuple( [ 'x', 'y', 'z' ] );
+	p = new Point( [ 10, 20, 30 ] );
+	iter = p.entries();
+
+	v = iter.next();
+	t.strictEqual( v.done, false, 'returns expected value' );
+
+	v = iter.return( 'finished' );
+	t.strictEqual( v.done, true, 'returns expected value' );
+	t.strictEqual( v.value, 'finished', 'returns expected value' );
+
+	v = iter.next();
+	t.strictEqual( v.done, true, 'returns expected value' );
+
+	t.end();
+});
+
+tape( 'if the environment supports `Symbol.iterator`, the returned iterator is iterable', function test( t ) {
+	var Point;
+	var iter1;
+	var iter2;
+	var v1;
+	var v2;
+	var p;
+
+	if ( !HAS_ITERATOR_SYMBOL ) {
+		t.pass( 'environment does not support Symbol.iterator' );
+		return t.end();
+	}
+	Point = namedtypedtuple( [ 'x', 'y', 'z' ] );
+	p = new Point( [ 10, 20, 30 ] );
+	iter1 = p.entries();
+
+	t.strictEqual( isFunction( iter1[ ITERATOR_SYMBOL ] ), true, 'returns expected value' );
+
+	iter2 = iter1[ ITERATOR_SYMBOL ]();
+
+	v1 = iter1.next();
+	v2 = iter2.next();
+
+	t.deepEqual( v1.value, v2.value, 'returns expected value' );
+
+	t.end();
+});