Day 4: Add tests for Home interactions and write operations

[Copilot]

Implements comprehensive test coverage for user interactions on posts including liking, saving, commenting, and replies.

Tests Added

Hook Tests

• usePostLike - Optimistic UI updates, state reversion on failure, error handling
• usePostSave - Save toggle, loading state, duplicate operation prevention
• usePostComments - Comment submission, validation, authentication checks

Service Tests

• CommentService - CRUD operations for comments/replies, authorization validation

Component Tests

• Post - Rendering, dark mode, multi-media handling, video posts
• CommentModal - Comment list, replies, empty state, input handling

Example

// usePostLike hook test
it('should revert state on API failure', async () => {
  const mockFirebase = createMockFirebase({success: false, error: 'Server error'});
  const {result} = renderHook(() => usePostLike('post-123', false, mockFirebase));
  
  await act(async () => {
    await result.current.handleLikePost(onLikesUpdate);
  });

  expect(result.current.isLiked).toBe(false); // Reverted
  expect(Snackbar.show).toHaveBeenCalledWith(expect.objectContaining({
    text: 'Server error',
    backgroundColor: '#ff3b30',
  }));
});

Results

• 77 new tests, all passing
• CodeQL scan: no security alerts
• Pre-existing failures in Route.test.tsx/test-utils.tsx unrelated to these changes (nativewind issue)

Original prompt

Do Day 4 Now Fully Don't Stop Until You Are Done

Summary of Conversation History

Recent Agent Commands and Tool Results

1. User Command: "Do Day 4 Now Fully Don't Stop Until You Are Done"

   • The user requested to fully implement the tasks outlined for Day 4, which focuses on testing user interactions on posts, specifically in the context of the application.

2. Context Updates:

   • The current date is noted as November 29, 2025.
   • Changes were made to several files, including d:\Capstone_Project\Learnex\src\shared\navigation\routes\UserStack.tsx, indicating ongoing development and potential issues that need addressing.

Results from Recent Tool Calls

• There were no specific tool calls executed in the most recent interactions, but the user has been actively working on implementing tests and fixing issues related to the application, particularly focusing on the UI and functionality of various components.

Active Work When Token Budget Exceeded

• The agent was actively engaged in implementing the tasks for Day 4, which involves testing user interactions on posts, such as liking, commenting, and saving posts. This includes ensuring that the relevant components function correctly and that the user experience is seamless.

Connection to Overall User Goals

• The user aims to ensure that the application is thoroughly tested and that all features work as intended. The focus on Day 4 tasks aligns with the broader goal of achieving a robust and user-friendly application by systematically addressing each feature and its interactions. The recent commands reflect a commitment to maintaining high standards in the application's functionality and user interface.

Conclusion

The conversation has revolved around implementing and testing various features of the application, with a specific focus on user interactions and ensuring that the UI is functioning correctly. The user is actively working towards completing the testing phases outlined in their structured plan.
TITLE: Day 4: Testing Home Interactions and Write Operations

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[NikhilRW]

@copilot pull request