test(js/plugins/compat-oai): Add test coverage for audio module

[7hokerz]

Description here... Help the reviewer by:

• Added unit tests for the audio module to improve test coverage of audio.ts.

The tests were written to closely follow the existing test conventions and patterns used in the repository, in order to keep consistency with the current test suite and reduce review overhead.

Test result:

• Before

 PASS  tests/utils_test.ts     
 PASS  tests/openai_test.ts        
 PASS  tests/compat_oai_test.ts (5.321 s)
------------------------|---------|----------|---------|---------|---------------------------------
File                    | % Stmts | % Branch | % Funcs | % Lines | Uncovered Line #s
------------------------|---------|----------|---------|---------|---------------------------------
All files               |   94.69 |    84.21 |   97.22 |   95.06 |                                 
 src                    |      95 |    84.03 |   96.15 |    95.5 |                                 
  model.ts              |   94.57 |    83.03 |   95.83 |   95.12 | 197,354,492,604,623-624,711-712 
  utils.ts              |     100 |      100 |     100 |     100 |                                 
 tests                  |   93.47 |    85.71 |     100 |   93.33 |                                 
  fake_openai_server.ts |   93.47 |    85.71 |     100 |   93.33 | 69-80
------------------------|---------|----------|---------|---------|---------------------------------

Test Suites: 3 passed, 3 total
Tests:       65 passed, 65 total
Snapshots:   0 total
Time:        6.161 s
Ran all test suites.

• After

 PASS  tests/utils_test.ts
 PASS  tests/openai_test.ts
 PASS  tests/openai_audio_test.ts    
 PASS  tests/compat_oai_test.ts
 PASS  tests/compat_oai_audio_test.ts (5.641 s)
------------------------|---------|----------|---------|---------|---------------------------------
File                    | % Stmts | % Branch | % Funcs | % Lines | Uncovered Line #s
------------------------|---------|----------|---------|---------|---------------------------------
All files               |   94.64 |    83.33 |   93.47 |   94.93 |                                 
 src                    |   94.86 |    83.13 |   91.66 |   95.21 |                                 
  audio.ts              |   94.52 |    80.85 |      80 |   94.52 | 240-241,413-414                 
  model.ts              |   94.57 |    83.03 |   95.83 |   95.12 | 197,354,492,604,623-624,711-712 
  utils.ts              |     100 |      100 |     100 |     100 |                                 
 tests                  |   93.47 |    85.71 |     100 |   93.33 |                                 
  fake_openai_server.ts |   93.47 |    85.71 |     100 |   93.33 | 69-80
------------------------|---------|----------|---------|---------|---------------------------------

Test Suites: 5 passed, 5 total
Tests:       82 passed, 82 total
Snapshots:   0 total
Time:        6.514 s
Ran all test suites.

If there are any missing cases or areas that should be adjusted to better match the project's testing practices, feedback would be appreciated!

Checklist (if applicable):

• PR title is following https://www.conventionalcommits.org/en/v1.0.0/
• Tested (manually, unit tested, etc.)
• Docs updated (updated docs or a docs bug required)

[gemini-code-assist]

Summary of Changes

Hello @7hokerz, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request focuses on bolstering the testing infrastructure for the compat-oai plugin's audio module. By introducing dedicated unit tests for audio request transformations, response handling, and model definitions, the changes aim to increase the reliability and maintainability of the audio functionalities. The modifications also involve making key internal functions accessible for testing purposes.

Highlights

• Enhanced Test Coverage: Comprehensive unit tests have been added for the audio.ts module, significantly improving test coverage for both Text-to-Speech (TTS) and Speech-to-Text (STT) functionalities.
• Exported Utility Functions: Several internal utility functions within js/plugins/compat-oai/src/audio.ts, such as toTTSRequest, speechToGenerateResponse, toSttRequest, and transcriptionToGenerateResponse, have been exported to facilitate thorough unit testing and potential external use.
• Model Definition Verification: New tests ensure that defineCompatOpenAISpeechModel and defineCompatOpenAITranscriptionModel correctly define and report the capabilities (e.g., media support, output formats) of OpenAI audio models within the framework.

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[gemini-code-assist]

Code Review

This pull request significantly improves the test coverage for the audio module by introducing new unit tests for both Text-to-Speech (TTS) and Speech-to-Text (STT) functionalities. The changes in src/audio.ts to export previously internal functions are well-justified by the new test files, enabling better testability. The new test files, compat_oai_audio_test.ts and openai_audio_test.ts, are well-structured and cover a good range of scenarios, including various request configurations, error handling, and custom request builders. This is a valuable addition to the codebase, enhancing reliability and maintainability.

[xavidop]

this is really good!