GitAuto: Low Test Coverage: app/components/Button/Install.tsx

[gitauto-for-dev]

Resolves #325

Why is this feature needed?

The test coverage of the InstallButton component was extremely low (0% for lines, statements, and functions). To ensure that our application remains robust during future changes and refactorings—and to catch regressions early—we need comprehensive tests that cover all critical paths, including the primary (happy path) and error scenarios. This change is essential to bring our test coverage closer to 100% and instill greater confidence in the codebase.

What and how are we changing? Why this approach?

• We have added a new unit test file (app/components/Button/Install.test.tsx) that:
  - Renders the InstallButton component with a custom text.
  - Verifies the link's attributes (URL and target) based on configuration constants.
  - Mocks the PostHog hook to confirm that the click event is tracked properly.

• We have also created an end-to-end test (e2e/install-button.spec.ts) using Playwright which:
  - Simulates navigation to the homepage.
  - Locates the Install button and verifies its attributes and visibility.
  - Checks for the presence of the GitHub logo to ensure that the button is rendered correctly.

This approach was chosen because it addresses both component behavior (unit tests) and overall integration with the page (e2e tests) with minimal code changes to the production code. Leveraging Jest with Testing Library and Playwright ensures that we cover a broad range of scenarios and user interactions.

What actions are required from users?

There are no changes required for end-users. However, for developers working on this project, please make sure to run the new test suites using your existing test commands (e.g., npm test or yarn test). This ensures that any future changes do not reduce test coverage below our targeted threshold.

How does it work? (Technical details)

• The unit tests utilize @testing-library/react for rendering the component and interacting with the DOM.
  - The PostHog functionality is mocked using Jest so we can safely test the click tracking without performing real API calls.
  - The tests confirm the correct URL, target attribute, and text content on the rendered InstallButton.

• The end-to-end test is implemented with Playwright, which:
  - Navigates to the homepage to check the live environment.
  - Retrieves the Install button via accessible roles and verifies its attributes.
  - Checks for the GitHub logo to ensure all visual elements are loaded as expected.

• Both test suites are designed to run in our CI pipelines, facilitating ongoing maintenance and continuous integration of test coverage.

Is it backwards compatible?

Yes, these changes are entirely backwards compatible. All modifications are confined to the test suites, so there are no breaking changes to the production code or user-facing features.

Any other considerations?

• Future enhancements might include additional tests for error handling and edge cases if the component’s complexity increases.
• There may be further opportunities to integrate these tests into our continuous coverage dashboard for automated tracking of improvements.
• Alternative approaches, such as snapshot testing, were considered but were ultimately not implemented in favor of direct assertions to ensure clarity of functionality.

Feel free to review and let me know if any additional tests or modifications are needed!

git fetch origin
git checkout gitauto-wes/issue-325-20250512-143730
git pull origin gitauto-wes/issue-325-20250512-143730

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Name	Status	Preview	Comments	Updated (UTC)
gitauto-website	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	May 12, 2025 5:45am

[gitauto-for-dev]

Committed the Check Run e2e error fix! Running it again.

[hiroshinishio]

We should verify if this button actually bring us to the page or not in E2E, right?

[gitauto-for-dev]

Resolved your feedback! Looks good?