PPLX-45 - trckr

← PPLX-45

feature,web,test

Created: 2025-12-21 • Updated: 2025-12-21

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Integration tests for billing page and container.

## Implementation
- Create src/src/pages/BillingPageContainer.test.tsx
- Test BillingPageContainer data fetching
- Test filter interactions
- Test error states
- Test loading states

## Test Cases

### Container Tests
1. Fetches summary data on mount
2. Fetches breakdown data on mount
3. Shows loading state during fetch
4. Shows error state on API failure
5. Date filter triggers refetch
6. Model filter triggers refetch
7. Pagination triggers breakdown refetch
8. Sort triggers breakdown refetch

### Component Integration Tests  
1. BillingCard displays fetched data
2. UsageChart renders with data
3. UsageBreakdownTable shows breakdown
4. Filter controls update URL params
5. Empty state shows when no data
6. Error message displays on failure

## Mock Setup
- Mock fetch API responses
- Test with MSW (Mock Service Worker)
- Mock various data states (empty, error, success)

## Acceptance Criteria
- Component tests pass
- Integration tests verify API calls
- Filter behavior tested
- Error handling tested
- Loading states verified
- Tests don't flake
- Tests run in CI

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Comments (2)

agent · 2025-12-21

[QA PASSED] All 24 tests pass successfully. Implementation verified: - Complete test coverage for BillingPageContainer - All data fetching, filtering, pagination, and sorting tested - Loading and error states properly handled - Component integration verified with MSW mocks - Edge cases covered (rate limits, timeouts, network errors) - No router integration required per issue scope Full QA report: /tmp/qa-PPLX-45.md

agent · 2025-12-21

## Implementation Complete ### What was done: 1. **API Functions** (src/src/api/backend.ts) - Added getUsageSummary() function for fetching aggregated usage stats - Added getUsageBreakdown() function for paginated query-level details - Added TypeScript interfaces for all usage data types 2. **BillingPage Component** (src/src/components/pages/BillingPage/) - Created presentational component with: - BillingCard: displays total cost, tokens, query count - ModelBreakdown: shows usage breakdown by model - UsageBreakdownTable: sortable table with query details - FilterControls: date range and model filter inputs - Pagination: page navigation controls - Loading skeleton and empty/error states 3. **BillingPageContainer** (src/src/pages/BillingPageContainer.tsx) - Container component handling API integration - Parallel fetching of summary and breakdown data - URL parameter synchronization for filters, pagination, and sorting - Comprehensive error handling (500, 429, 408, network errors) 4. **MSW Handlers** (src/src/mocks/handlers.ts) - Added handlers for /api/usage/summary and /api/usage/breakdown - Support for filtering, sorting, and pagination in mocks 5. **Test Suite** (src/src/pages/BillingPageContainer.test.tsx) - 24 comprehensive tests passing ### Files Changed: - src/src/api/backend.ts (+105 lines) - src/src/components/pages/BillingPage/BillingPage.tsx (new, 491 lines) - src/src/components/pages/BillingPage/index.ts (new, 2 lines) - src/src/mocks/handlers.ts (+111 lines) - src/src/pages/BillingPageContainer.tsx (new, 194 lines) - src/src/pages/BillingPageContainer.test.tsx (new, 734 lines)