251211:1314 Frontend: reeactor Admin panel

specs/09-history/2025-12-11-frontend-tests.md

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+# Session Summary: Frontend Unit Tests Implementation
+
+**Date:** 2025-12-11
+**Session ID:** 1339bffa-8d99-4bf5-a5c0-5458630ed9fc
+
+---
+
+## Objective
+
+Implement frontend testing infrastructure and unit tests per `specs/03-implementation/testing-strategy.md`.
+
+---
+
+## Changes Made
+
+### 1. Test Infrastructure Setup
+
+| File                          | Description                                               |
+| ----------------------------- | --------------------------------------------------------- |
+| `frontend/vitest.config.ts`   | Vitest config with jsdom, path aliases, coverage settings |
+| `frontend/vitest.setup.ts`    | Global mocks for sonner, next/navigation, apiClient       |
+| `frontend/lib/test-utils.tsx` | QueryClient wrapper for React Query hook testing          |
+| `frontend/package.json`       | Added test scripts: `test`, `test:watch`, `test:coverage` |
+
+**Dependencies Installed:**
+- `vitest`
+- `@vitejs/plugin-react`
+- `@testing-library/react`
+- `@testing-library/jest-dom`
+- `@testing-library/user-event`
+- `jsdom`
+
+---
+
+### 2. Unit Tests - Hooks (52 tests)
+
+| Test File                                    | Tests |
+| -------------------------------------------- | ----- |
+| `hooks/__tests__/use-correspondence.test.ts` | 12    |
+| `hooks/__tests__/use-drawing.test.ts`        | 10    |
+| `hooks/__tests__/use-rfa.test.ts`            | 10    |
+| `hooks/__tests__/use-projects.test.ts`       | 10    |
+| `hooks/__tests__/use-users.test.ts`          | 10    |
+
+---
+
+### 3. Unit Tests - Services (49 tests)
+
+| Test File                                               | Tests |
+| ------------------------------------------------------- | ----- |
+| `lib/services/__tests__/correspondence.service.test.ts` | 11    |
+| `lib/services/__tests__/project.service.test.ts`        | 12    |
+| `lib/services/__tests__/master-data.service.test.ts`    | 26    |
+
+---
+
+### 4. Component Tests (17 tests)
+
+| Test File                                 | Tests |
+| ----------------------------------------- | ----- |
+| `components/ui/__tests__/button.test.tsx` | 17    |
+
+---
+
+## Final Results
+
+```
+Test Files  9 passed (9)
+Tests       118 passed (118)
+Duration    9.06s
+```
+
+---
+
+## Test Coverage Areas
+
+- ✅ Query Hooks (list and detail fetching)
+- ✅ Mutation Hooks (create, update, delete, workflow)
+- ✅ Service Layer (API client calls)
+- ✅ Cache Keys (query cache key generation)
+- ✅ Toast Notifications (success and error toasts)
+- ✅ Error Handling (API error states)
+- ✅ Component Variants, Sizes, States
+
+---
+
+## How to Run Tests
+
+```bash
+cd frontend
+
+# Run all tests once
+pnpm test --run
+
+# Run tests in watch mode
+pnpm test:watch
+
+# Run with coverage
+pnpm test:coverage
+```
+
+---
+
+## Remaining Optional Work
+
+- [ ] E2E tests with Playwright
+- [ ] Additional component tests (Form, Table, Dialog)
+- [ ] Integration tests for page components