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🧪 Add tests for ShareButtons clipboard error handling#97

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is0692vs merged 2 commits intomainfrom
fix-share-buttons-error-handling-11114835532943069425
Mar 21, 2026
Merged

🧪 Add tests for ShareButtons clipboard error handling#97
is0692vs merged 2 commits intomainfrom
fix-share-buttons-error-handling-11114835532943069425

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@is0692vs
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🎯 What: The testing gap addressed
This PR addresses the missing error handling tests in the ShareButtons component. Previously, if navigator.clipboard.writeText failed, it correctly fell back to document.execCommand("copy"). However, if the fallback also failed (it returns false on failure instead of throwing), the component incorrectly and unconditionally showed the "Copied!" feedback regardless.

📊 Coverage: What scenarios are now tested

  • Added a robust unit test simulating a total failure of both navigator.clipboard.writeText and document.execCommand.
  • Verified that logger.error is properly called with both the original exception and the fallback exception.
  • Verified that the "Copied!" UI text remains hidden if copying fundamentally fails.

Result: The improvement in test coverage
The code was updated to conditionally check the success of document.execCommand and wrap the fallback manipulation in a try...finally block for consistent cleanup. logger.error is properly integrated. This correctly stops the app from displaying an incorrect success state and improves overall code reliability through targeted unit test verification.


PR created automatically by Jules for task 11114835532943069425 started by @is0692vs

- Conditionally show 'Copied!' feedback only on successful copy operations.
- Ensure document.execCommand fallback explicitly handles boolean failures.
- Throw and log errors via logger when both copy operations fail.
- Added comprehensive unit tests for these error scenarios.

Co-authored-by: is0692vs <135803462+is0692vs@users.noreply.github.com>
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Reviewing files that changed from the base of the PR and between 87d145d and 333c23d.

📒 Files selected for processing (2)
  • src/components/ShareButtons.test.tsx
  • src/components/ShareButtons.tsx
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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 significantly enhances the reliability of the ShareButtons component by implementing more robust error handling for clipboard copy operations. It ensures that users receive accurate feedback, preventing the "Copied!" message from appearing when a copy action has actually failed. This improvement is thoroughly validated by new unit tests that cover various failure scenarios, making the component more resilient and predictable.

Highlights

  • Improved Error Handling: The ShareButtons component now correctly handles failures of both navigator.clipboard.writeText and its document.execCommand("copy") fallback, preventing incorrect "Copied!" feedback.
  • Enhanced Test Coverage: A new, robust unit test was added to simulate total failure of both clipboard copy methods, verifying correct error logging and UI behavior.
  • Comprehensive Logging: logger.error is now properly called with details of both the initial clipboard API failure and any subsequent fallback failure.
  • Reliable UI Feedback: The "Copied!" UI text is now only displayed if the copy operation fundamentally succeeds, improving user experience.
  • Code Refinement: The handleCopy logic was updated to conditionally check document.execCommand success and wrap fallback manipulation in a try...finally block for consistent cleanup.
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Code Review

This pull request effectively addresses a bug in the clipboard copy functionality by correctly handling failures in the fallback mechanism. The new logic prevents showing a "Copied!" message when the operation fails, and the added unit test successfully verifies this scenario. I've included one suggestion to refactor the handleCopy function to improve its readability and maintainability by flattening the nested try-catch structure.

@is0692vs
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レビュー内容を整理します。

全体所感

  • gemini-code-assist: This pull request effectively addresses a bug in the clipboard copy functionality by correctly handling failures in the fallback mechanism. The new logic prevents showing a "Copied!" message when the operation fails, and the added unit test successfully verifies this scenario.

主な未解決指摘

  • [medium] src/components/ShareButtons.tsx:61 gemini-code-assist: For improved readability and maintainability, the handleCopy function can be refactored to avoid nested try-catch blocks and using exceptions for control flow.

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レビュー内容を整理します。

全体所感

  • gemini-code-assist: This pull request effectively addresses a bug in the clipboard copy functionality by correctly handling failures in the fallback mechanism. The new logic prevents showing a "Copied!" message when the operation fails, and the added unit test successfully verifies this scenario.

主な未解決指摘

  • [medium] src/components/ShareButtons.tsx:61 gemini-code-assist: For improved readability and maintainability, the handleCopy function can be refactored to avoid nested try-catch blocks and using exceptions for control flow.

ご指摘ありがとうございます。handleCopy メソッドからネストされた try-catch ブロックと例外による制御フローを排除し、コードの可読性と保守性を向上させるリファクタリングを行いました。

Co-authored-by: is0692vs <135803462+is0692vs@users.noreply.github.com>
@is0692vs is0692vs merged commit 4ba7996 into main Mar 21, 2026
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@is0692vs is0692vs deleted the fix-share-buttons-error-handling-11114835532943069425 branch March 21, 2026 06:01
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