Set up frontend test infrastructure

Install @testing-library/react, @testing-library/jest-dom,
@testing-library/user-event, and jsdom. Configure Vitest with globals,
jsdom environment, and a setup file importing jest-dom matchers. Add a
custom render helper wrapping components with QueryClientProvider and
MemoryRouter. Exclude e2e/ from vitest. Smoke test covers
formatEvolutionMethod.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

.beans/nuzlocke-tracker-d8cp--set-up-frontend-test-infrastructure.md

@@ -1,11 +1,11 @@
 ---
 # nuzlocke-tracker-d8cp
 title: Set up frontend test infrastructure
-status: draft
+status: completed
 type: task
 priority: normal
 created_at: 2026-02-10T09:33:33Z
-updated_at: 2026-02-10T09:34:00Z
+updated_at: 2026-02-21T12:32:34Z
 parent: nuzlocke-tracker-yzpb
 blocking:
     - nuzlocke-tracker-ee9s
@@ -16,14 +16,14 @@ Set up the test infrastructure for the React/TypeScript frontend. No testing too
 
 ## Checklist
 
-- [ ] Install Vitest, @testing-library/react, @testing-library/jest-dom, @testing-library/user-event, jsdom
-- [ ] Configure Vitest in `vite.config.ts` or a dedicated `vitest.config.ts`
-- [ ] Set up jsdom as the test environment
-- [ ] Create a test setup file (e.g. `src/test/setup.ts`) that imports @testing-library/jest-dom matchers
-- [ ] Create test utility helpers (e.g. render wrapper with providers — QueryClientProvider, BrowserRouter)
-- [ ] Add a \`test\` script to package.json
-- [ ] Verify the setup by writing a simple smoke test
-- [ ] Set up MSW (Mock Service Worker) or a similar API mocking strategy for hook/component tests
+- [x] Install Vitest, @testing-library/react, @testing-library/jest-dom, @testing-library/user-event, jsdom
+- [x] Configure Vitest in `vite.config.ts` or a dedicated `vitest.config.ts`
+- [x] Set up jsdom as the test environment
+- [x] Create a test setup file (e.g. `src/test/setup.ts`) that imports @testing-library/jest-dom matchers
+- [x] Create test utility helpers (e.g. render wrapper with providers — QueryClientProvider, BrowserRouter)
+- [x] Add a \`test\` script to package.json
+- [x] Verify the setup by writing a simple smoke test
+- [x] Set up MSW (Mock Service Worker) or a similar API mocking strategy for hook/component tests — using `vi.mock` instead; MSW deferred until needed
 
 ## Notes
 

.beans/nuzlocke-tracker-yzpb--implement-unit-integration-tests.md

@@ -22,7 +22,7 @@ Add comprehensive unit and integration test coverage to both the backend (FastAP
 
 - [x] Backend test infrastructure is set up (conftest, fixtures, test DB)
 - [ ] Backend schemas and services have unit test coverage
-- [ ] Backend API endpoints have integration test coverage
-- [ ] Frontend test infrastructure is set up (Vitest, RTL)
+- [x] Backend API endpoints have integration test coverage
+- [x] Frontend test infrastructure is set up (Vitest, RTL)
 - [ ] Frontend utilities and hooks have unit test coverage
 - [ ] Frontend components have basic render/interaction tests