Integration tests - File watcher integration (90% coverage)

[johnproblems]

Task: Integration tests - File watcher integration (90% coverage)

Description

Create integration tests for the file system watcher that monitors the .claude/epics/ directory for changes. Test file change detection, debouncing, event emission, and integration with data providers with 90% minimum coverage.

Acceptance Criteria

• Tests verify file creation detection in .claude/epics/
• Tests validate file modification detection
• Tests check file deletion detection
• Tests verify debouncing behavior (prevent excessive triggers)
• Tests validate event emission to data providers
• Tests check proper disposal and cleanup
• Code coverage reaches minimum 90% (lines, branches, functions)
• All tests pass consistently

Technical Details

• Create test file: test/integration/services/fileWatcher.test.ts
• Test scenarios:
  • Watcher initialization with correct glob pattern
  • File create event triggers refresh
  • File modify event triggers refresh
  • File delete event triggers refresh
  • Debouncing batches rapid changes (200-500ms)
  • Events filtered to .md files only
  • Watcher ignores non-epic/task files
  • Multiple rapid changes handled correctly
  • Watcher disposal stops monitoring
  • Integration with Epic/Task data providers
• Use @vscode/test-electron for file system watcher API
• Create temporary test directories and files
• Simulate file system operations
• Test debounce timing with clock manipulation
• Verify event callbacks invoked correctly
• Files affected: test/integration/services/*.test.ts (new)

Dependencies

• Task 9 - File system watcher implementation completed
• Task 3 - Testing infrastructure configured

Effort Estimate

• Size: M
• Hours: 6
• Parallel: true

Definition of Done

• Code implemented
• Tests written and passing
• Documentation updated
• Code reviewed
• Coverage report shows 90%+ coverage
• File system integration validated