test: Write test for OpenfeatureAPI to return No-op client when OpenfeatureClient is unresolvable

[Tmakinde]

Overview

This pull request refactors the client creation logic in OpenFeatureAPI to improve testability and resilience.

• Introduces a dedicated resolveClient method, which encapsulates client instantiation logic.

• Ensures that failures during client resolution are handled gracefully by returning a NoOpClient.

• Adds a testing dependency to allow mocking of final classes, enabling comprehensive test coverage without altering production code.

[gemini-code-assist]

Summary of Changes

Hello @Tmakinde, 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 refactors the client creation logic within the OpenFeature API to enhance testability and robustness. It introduces a dedicated method for resolving clients, which allows for better handling of failure scenarios by returning a NoOpClient. This change is supported by a new testing dependency that enables mocking of final classes, ensuring comprehensive test coverage for these new behaviors.

Highlights

• New Dependency for Testing: The dg/bypass-finals library has been added to composer.json to facilitate testing of final classes.
• Client Resolution Refactoring: A new resolveClient method was introduced in OpenFeatureAPI.php to centralize the creation of OpenFeatureClient instances, improving modularity and testability.
• Enhanced Client Error Handling Test: A new unit test was added to OpenFeatureAPITest.php to ensure that a NoOpClient is returned when the client resolution process encounters an exception, leveraging the new dg/bypass-finals dependency for mocking.

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 96.75%. Comparing base (2123274) to head (72d8848).
⚠️ Report is 21 commits behind head on main.

Additional details and impacted files

@@             Coverage Diff              @@
##               main     #157      +/-   ##
============================================
+ Coverage     95.19%   96.75%   +1.56%     
- Complexity      227      228       +1     
============================================
  Files            40       40              
  Lines           583      586       +3     
============================================
+ Hits            555      567      +12     
+ Misses           28       19       -9     

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[gemini-code-assist]

Code Review

This pull request introduces a refactoring to extract client creation into a dedicated resolveClient method within OpenFeatureAPI, and adds a new test case to ensure a NoOpClient is returned if client resolution fails. The changes improve testability. My review includes a few suggestions:

• The implementation to return a NoOpClient on failure is missing in the getClient method's error handling, which will cause the new test to fail.
• The visibility of the new resolveClient method could be restricted for better encapsulation.
• There's a minor correction needed in a test file's type hint.
  Overall, this is a good step towards making the client resolution more robust, and with the suggested changes, it will be complete.

[tcarrio]

A styling issue, and one necessary change, granted mockery should support it. Otherwise, this looks good to me. Once the changes are pushed, I can approve.

Thank you for your contribution @Tmakinde 🙏

[Tmakinde]

A styling issue, and one necessary change, granted mockery should support it. Otherwise, this looks good to me. Once the changes are pushed, I can approve.

Thank you for your contribution @Tmakinde 🙏

I have fixed all the changes you mentioned. Thank you for the review @tcarrio