add missing import for mock

Author: ohmayr

gapic/templates/%namespace/%name_%version/%sub/_compat/legacy_helpers.py.j2

@@ -1,6 +1,15 @@
+{% extends '_base.py.j2' %}
+
+{% block content %}
 
 import os
 
+# try/except added for compatibility with python < 3.8
+try:
+    from unittest import mock
+except ImportError:  # pragma: NO COVER
+    import mock
+
 from google.auth.exceptions import MutualTLSChannelError          # type: ignore
 
 def _read_environment_variables():
@@ -23,4 +32,6 @@ def _read_environment_variables():
         raise ValueError("Environment variable `GOOGLE_API_USE_CLIENT_CERTIFICATE` must be either `true` or `false`")
     if use_mtls_endpoint not in ("auto", "never", "always"):
         raise MutualTLSChannelError("Environment variable `GOOGLE_API_USE_MTLS_ENDPOINT` must be `never`, `auto` or `always`")
-    return use_client_cert == "true", use_mtls_endpoint, universe_domain_env
+    return use_client_cert == "true", use_mtls_endpoint, universe_domain_env
+
+{% endblock %}

tests/integration/goldens/asset/google/cloud/asset_v1/_compat/legacy_helpers.py

@@ -1,6 +1,26 @@
-
+# -*- coding: utf-8 -*-
+# Copyright 2025 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.
+#
 import os
 
+# try/except added for compatibility with python < 3.8
+try:
+    from unittest import mock
+except ImportError:  # pragma: NO COVER
+    import mock
+
 from google.auth.exceptions import MutualTLSChannelError          # type: ignore
 
 def _read_environment_variables():

tests/integration/goldens/redis/google/cloud/redis_v1/_compat/legacy_helpers.py

@@ -1,6 +1,26 @@
-
+# -*- coding: utf-8 -*-
+# Copyright 2025 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.
+#
 import os
 
+# try/except added for compatibility with python < 3.8
+try:
+    from unittest import mock
+except ImportError:  # pragma: NO COVER
+    import mock
+
 from google.auth.exceptions import MutualTLSChannelError          # type: ignore
 
 def _read_environment_variables():