Application developers may want to test their code with simulated responses, including errors, from an object of type LanguageServiceClient. To do so, construct an object of type LanguageServiceClient with an instance of this class. Then use the Google Test framework functions to program the behavior of this mock.
See Also
This example for how to test your application with GoogleTest. While the example showcases types from the BigQuery library, the underlying principles apply for any pair of *Client and *Connection.
Functions
virtual options()
This function is implemented using gMock's MOCK_METHOD().
Consult the gMock documentation to use this mock in your tests.
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Missing the information I need","missingTheInformationINeed","thumb-down"],["Too complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-08-14 UTC."],[[["\u003cp\u003eThis webpage details the \u003ccode\u003eMockLanguageServiceConnection\u003c/code\u003e class, which is used for testing \u003ccode\u003eLanguageServiceClient\u003c/code\u003e code with simulated responses and errors.\u003c/p\u003e\n"],["\u003cp\u003eThe class allows for mocking various language service functions, such as \u003ccode\u003eAnalyzeSentiment\u003c/code\u003e, \u003ccode\u003eAnalyzeEntities\u003c/code\u003e, \u003ccode\u003eClassifyText\u003c/code\u003e, \u003ccode\u003eModerateText\u003c/code\u003e, and \u003ccode\u003eAnnotateText\u003c/code\u003e, through the \u003ccode\u003eMOCK_METHOD()\u003c/code\u003e function.\u003c/p\u003e\n"],["\u003cp\u003eThe page lists a history of versions of the \u003ccode\u003eMockLanguageServiceConnection\u003c/code\u003e class, with the latest release being \u003ccode\u003e2.37.0-rc\u003c/code\u003e and versions back to \u003ccode\u003e2.11.0\u003c/code\u003e.\u003c/p\u003e\n"],["\u003cp\u003eThe page references the use of the \u003ca href=\"https://google.github.io/googletest\"\u003egMock\u003c/a\u003e and \u003ca href=\"https://cloud.google.com/cpp/docs/reference/bigquery/latest/bigquery-read-mock\"\u003eGoogleTest\u003c/a\u003e frameworks to implement and test the mock service connection.\u003c/p\u003e\n"]]],[],null,["# Class MockLanguageServiceConnection (2.17.0)\n\nVersion 2.17.0keyboard_arrow_down\n\n- [2.42.0-rc (latest)](/cpp/docs/reference/language/latest/classgoogle_1_1cloud_1_1language__v2__mocks_1_1MockLanguageServiceConnection)\n- [2.41.0](/cpp/docs/reference/language/2.41.0/classgoogle_1_1cloud_1_1language__v2__mocks_1_1MockLanguageServiceConnection)\n- [2.40.0](/cpp/docs/reference/language/2.40.0/classgoogle_1_1cloud_1_1language__v2__mocks_1_1MockLanguageServiceConnection)\n- [2.39.0](/cpp/docs/reference/language/2.39.0/classgoogle_1_1cloud_1_1language__v2__mocks_1_1MockLanguageServiceConnection)\n- [2.38.0](/cpp/docs/reference/language/2.38.0/classgoogle_1_1cloud_1_1language__v2__mocks_1_1MockLanguageServiceConnection)\n- [2.37.0](/cpp/docs/reference/language/2.37.0/classgoogle_1_1cloud_1_1language__v2__mocks_1_1MockLanguageServiceConnection)\n- [2.36.0](/cpp/docs/reference/language/2.36.0/classgoogle_1_1cloud_1_1language__v2__mocks_1_1MockLanguageServiceConnection)\n- [2.35.0](/cpp/docs/reference/language/2.35.0/classgoogle_1_1cloud_1_1language__v2__mocks_1_1MockLanguageServiceConnection)\n- [2.34.0](/cpp/docs/reference/language/2.34.0/classgoogle_1_1cloud_1_1language__v2__mocks_1_1MockLanguageServiceConnection)\n- [2.33.0](/cpp/docs/reference/language/2.33.0/classgoogle_1_1cloud_1_1language__v2__mocks_1_1MockLanguageServiceConnection)\n- [2.32.0](/cpp/docs/reference/language/2.32.0/classgoogle_1_1cloud_1_1language__v2__mocks_1_1MockLanguageServiceConnection)\n- [2.31.0](/cpp/docs/reference/language/2.31.0/classgoogle_1_1cloud_1_1language__v2__mocks_1_1MockLanguageServiceConnection)\n- [2.30.0](/cpp/docs/reference/language/2.30.0/classgoogle_1_1cloud_1_1language__v2__mocks_1_1MockLanguageServiceConnection)\n- [2.29.0](/cpp/docs/reference/language/2.29.0/classgoogle_1_1cloud_1_1language__v2__mocks_1_1MockLanguageServiceConnection)\n- [2.28.0](/cpp/docs/reference/language/2.28.0/classgoogle_1_1cloud_1_1language__v2__mocks_1_1MockLanguageServiceConnection)\n- [2.27.0](/cpp/docs/reference/language/2.27.0/classgoogle_1_1cloud_1_1language__v2__mocks_1_1MockLanguageServiceConnection)\n- [2.26.0](/cpp/docs/reference/language/2.26.0/classgoogle_1_1cloud_1_1language__v2__mocks_1_1MockLanguageServiceConnection)\n- [2.25.1](/cpp/docs/reference/language/2.25.1/classgoogle_1_1cloud_1_1language__v2__mocks_1_1MockLanguageServiceConnection)\n- [2.24.0](/cpp/docs/reference/language/2.24.0/classgoogle_1_1cloud_1_1language__v2__mocks_1_1MockLanguageServiceConnection)\n- [2.23.0](/cpp/docs/reference/language/2.23.0/classgoogle_1_1cloud_1_1language__v2__mocks_1_1MockLanguageServiceConnection)\n- [2.22.1](/cpp/docs/reference/language/2.22.1/classgoogle_1_1cloud_1_1language__v2__mocks_1_1MockLanguageServiceConnection)\n- [2.21.0](/cpp/docs/reference/language/2.21.0/classgoogle_1_1cloud_1_1language__v2__mocks_1_1MockLanguageServiceConnection)\n- [2.20.0](/cpp/docs/reference/language/2.20.0/classgoogle_1_1cloud_1_1language__v2__mocks_1_1MockLanguageServiceConnection)\n- [2.19.0](/cpp/docs/reference/language/2.19.0/classgoogle_1_1cloud_1_1language__v2__mocks_1_1MockLanguageServiceConnection)\n- [2.18.0](/cpp/docs/reference/language/2.18.0/classgoogle_1_1cloud_1_1language__v2__mocks_1_1MockLanguageServiceConnection)\n- [2.17.0](/cpp/docs/reference/language/2.17.0/classgoogle_1_1cloud_1_1language__v2__mocks_1_1MockLanguageServiceConnection)\n- [2.16.0](/cpp/docs/reference/language/2.16.0/classgoogle_1_1cloud_1_1language__v2__mocks_1_1MockLanguageServiceConnection)\n- [2.15.1](/cpp/docs/reference/language/2.15.1/classgoogle_1_1cloud_1_1language__v2__mocks_1_1MockLanguageServiceConnection)\n- [2.14.0](/cpp/docs/reference/language/2.14.0/classgoogle_1_1cloud_1_1language__v2__mocks_1_1MockLanguageServiceConnection)\n- [2.13.0](/cpp/docs/reference/language/2.13.0/classgoogle_1_1cloud_1_1language__v2__mocks_1_1MockLanguageServiceConnection)\n- [2.12.0](/cpp/docs/reference/language/2.12.0/classgoogle_1_1cloud_1_1language__v2__mocks_1_1MockLanguageServiceConnection)\n- [2.11.0](/cpp/docs/reference/language/2.11.0/classgoogle_1_1cloud_1_1language__v2__mocks_1_1MockLanguageServiceConnection) \nA class to mock `LanguageServiceConnection`. \nApplication developers may want to test their code with simulated responses, including errors, from an object of type `LanguageServiceClient`. To do so, construct an object of type `LanguageServiceClient` with an instance of this class. Then use the Google Test framework functions to program the behavior of this mock.\n\n###### See Also\n\n[This example](https://cloud.google.com/cpp/docs/reference/bigquery/latest/bigquery-read-mock) for how to test your application with GoogleTest. While the example showcases types from the BigQuery library, the underlying principles apply for any pair of `*Client` and `*Connection`.\n\nFunctions\n---------\n\n### virtual options()\n\nThis function is implemented using [gMock](https://google.github.io/googletest)'s `MOCK_METHOD()`.\nConsult the gMock documentation to use this mock in your tests.\n\n### virtual AnalyzeSentiment(google::cloud::language::v2::AnalyzeSentimentRequest const \\&)\n\nThis function is implemented using [gMock](https://google.github.io/googletest)'s `MOCK_METHOD()`.\nConsult the gMock documentation to use this mock in your tests.\n\n### virtual AnalyzeEntities(google::cloud::language::v2::AnalyzeEntitiesRequest const \\&)\n\nThis function is implemented using [gMock](https://google.github.io/googletest)'s `MOCK_METHOD()`.\nConsult the gMock documentation to use this mock in your tests.\n\n### virtual ClassifyText(google::cloud::language::v2::ClassifyTextRequest const \\&)\n\nThis function is implemented using [gMock](https://google.github.io/googletest)'s `MOCK_METHOD()`.\nConsult the gMock documentation to use this mock in your tests.\n\n### virtual ModerateText(google::cloud::language::v2::ModerateTextRequest const \\&)\n\nThis function is implemented using [gMock](https://google.github.io/googletest)'s `MOCK_METHOD()`.\nConsult the gMock documentation to use this mock in your tests.\n\n### virtual AnnotateText(google::cloud::language::v2::AnnotateTextRequest const \\&)\n\nThis function is implemented using [gMock](https://google.github.io/googletest)'s `MOCK_METHOD()`.\nConsult the gMock documentation to use this mock in your tests."]]
