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🧪 [Test] Add unit tests for fetchViewerLogin#63

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is0692vs wants to merge 1 commit intomainfrom
test/github-viewer-login-80732125973169850
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🧪 [Test] Add unit tests for fetchViewerLogin#63
is0692vs wants to merge 1 commit intomainfrom
test/github-viewer-login-80732125973169850

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@is0692vs
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🎯 What:
Added a test suite for the fetchViewerLogin function located in src/lib/githubViewer.ts which lacked test coverage.

📊 Coverage:

  • Successfully returning the user login from the mocked API response.
  • Sending correct headers (including the Authorization Bearer token).
  • Throwing a GitHubApiError with the correct status code and message when the API request fails (e.g., 401 Unauthorized).

Result:
Increased testing coverage for githubViewer.ts with 2 new unit tests that effectively validate API request formation and error handling using Vitest.


PR created automatically by Jules for task 80732125973169850 started by @is0692vs

Co-authored-by: is0692vs <135803462+is0692vs@users.noreply.github.com>
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📥 Commits

Reviewing files that changed from the base of the PR and between 3cfdea1 and 718f2b1.

📒 Files selected for processing (1)
  • src/lib/__tests__/githubViewer.test.ts
✨ Finishing Touches
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Summary of Changes

Hello, 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 introduces comprehensive unit tests for the fetchViewerLogin utility function. The primary goal is to enhance the robustness and reliability of the GitHub API interaction by verifying both successful data retrieval and correct error handling mechanisms, thereby improving overall code quality and maintainability.

Highlights

  • New Unit Tests: Added a dedicated test suite for the fetchViewerLogin function in src/lib/githubViewer.ts using Vitest, addressing a previous lack of test coverage.
  • Test Coverage: Ensured coverage for successful API responses, correct header transmission (including the Authorization Bearer token), and proper GitHubApiError handling for failed requests (e.g., 401 Unauthorized).
  • Improved Reliability: Increased testing coverage for githubViewer.ts with two new unit tests that effectively validate API request formation and error handling.
Changelog
  • src/lib/tests/githubViewer.test.ts
    • Added new unit tests for the fetchViewerLogin function.
Activity
  • Pull request automatically created by Jules for task 80732125973169850, initiated by @is0692vs.
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Code Review

This pull request adds unit tests for the fetchViewerLogin function, improving test coverage. The tests cover both successful and failing API responses. I've identified an opportunity to simplify and correct one of the test cases to make it more efficient and accurate by avoiding a redundant function call.

Comment on lines +44 to +55
await expect(fetchViewerLogin("invalid-token")).rejects.toThrow(GitHubApiError);

// We can also check specific properties on the error
try {
await fetchViewerLogin("invalid-token");
} catch (e) {
expect(e).toBeInstanceOf(GitHubApiError);
expect((e as GitHubApiError).status).toBe(401);
expect((e as GitHubApiError).message).toBe("Failed to resolve current GitHub user");
}

expect(mockFetch).toHaveBeenCalledTimes(2);

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medium

This test case calls fetchViewerLogin twice: once with expect.rejects and again inside a try...catch block. This is redundant and leads to the assertion that mockFetch was called twice, which is not representative of a single test scenario.

A cleaner and more efficient approach is to use a single try...catch block to both verify that an error is thrown and inspect its properties. This ensures the function under test is only called once.

Suggested change
await expect(fetchViewerLogin("invalid-token")).rejects.toThrow(GitHubApiError);
// We can also check specific properties on the error
try {
await fetchViewerLogin("invalid-token");
} catch (e) {
expect(e).toBeInstanceOf(GitHubApiError);
expect((e as GitHubApiError).status).toBe(401);
expect((e as GitHubApiError).message).toBe("Failed to resolve current GitHub user");
}
expect(mockFetch).toHaveBeenCalledTimes(2);
try {
await fetchViewerLogin("invalid-token");
// The test should fail if no error is thrown.
fail("Expected fetchViewerLogin to throw, but it did not.");
} catch (e) {
expect(e).toBeInstanceOf(GitHubApiError);
expect((e as GitHubApiError).status).toBe(401);
expect((e as GitHubApiError).message).toBe("Failed to resolve current GitHub user");
}
expect(mockFetch).toHaveBeenCalledTimes(1);

@is0692vs
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This PR is being closed as superseded by #61. Its test additions were consolidated into that PR so related test changes can be reviewed and validated together.

@is0692vs is0692vs closed this Mar 14, 2026
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This PR is being closed as superseded by #61. Its test additions were consolidated into that PR so related test changes can be reviewed and validated together.

Understood. Acknowledging that this PR is superseded by #61 and stopping work on this task.

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