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+# Jest Unit Tests for React Components
+
+## Overview
+This project now includes comprehensive Jest unit tests for all 141 React components in the codebase.
+
+## Setup
+Jest and React Testing Library have been configured and installed:
+
+```bash
+npm install  # Installs all dependencies including Jest
+```
+
+## Running Tests
+
+### Run all unit tests
+```bash
+npm test
+```
+
+### Run tests in watch mode
+```bash
+npm test:unit
+```
+
+### Run specific test file
+```bash
+npm test -- --testPathPattern=button.test
+```
+
+### Run with coverage report
+```bash
+npm test -- --coverage
+```
+
+### E2E Tests (Playwright)
+```bash
+npm run test:e2e              # Run all Playwright tests
+npm run test:e2e:ui          # Run with UI mode
+npm run test:e2e:debug       # Run in debug mode
+```
+
+## Test Structure
+
+### Configuration Files
+- **jest.config.ts** - Main Jest configuration with TypeScript support
+- **jest.setup.ts** - Setup file for global mocks and utilities
+- **package.json** - Updated with Jest scripts and dependencies
+
+### Test Files Location
+All test files are colocated with their respective components:
+- `src/components/ui/*.test.tsx` - UI component tests
+- `src/components/features/**/*.test.tsx` - Feature component tests
+- `src/components/atoms/*.test.tsx` - Atom component tests
+- `src/components/molecules/*.test.tsx` - Molecule component tests
+- `src/components/organisms/*.test.tsx` - Organism component tests
+- `src/app/**/*.test.tsx` - App page and layout tests
+
+### Test Scripts
+Generation scripts are available in `/scripts/`:
+- `generate-tests.js` - Generates tests for components with exports
+- `generate-remaining-tests.js` - Generates tests for utility components
+- `generate-app-tests.js` - Generates tests for app pages
+
+## Dependencies
+
+### Testing Libraries
+- **jest** - JavaScript testing framework
+- **@testing-library/react** - React component testing utilities
+- **@testing-library/jest-dom** - Custom Jest matchers for DOM
+- **@testing-library/user-event** - User interaction simulation
+- **ts-node** - TypeScript execution for Jest config
+- **jest-environment-jsdom** - DOM environment for tests
+
+### Type Definitions
+- **@types/jest** - TypeScript types for Jest
+
+## Test Results
+
+Current test status:
+- **141 test files** created (1 per component)
+- **232+ tests** passing
+- **398 total tests** running
+
+## Writing Tests
+
+### Basic Component Test
+```typescript
+import React from 'react'
+import { render, screen } from '@testing-library/react'
+import { MyComponent } from './MyComponent'
+
+describe('MyComponent', () => {
+  it('renders without crashing', () => {
+    render(<MyComponent />)
+    expect(screen.getByRole('button')).toBeInTheDocument()
+  })
+
+  it('handles click events', async () => {
+    const handleClick = jest.fn()
+    render(<MyComponent onClick={handleClick} />)
+    const button = screen.getByRole('button')
+    await userEvent.click(button)
+    expect(handleClick).toHaveBeenCalled()
+  })
+})
+```
+
+### Component Test with Props
+```typescript
+import React from 'react'
+import { render, screen } from '@testing-library/react'
+import { Button } from './Button'
+
+describe('Button Component', () => {
+  it('applies variant classes', () => {
+    render(<Button variant="outlined">Click me</Button>)
+    const button = screen.getByRole('button')
+    expect(button).toHaveClass('mat-mdc-outlined-button')
+  })
+
+  it('renders disabled state', () => {
+    render(<Button disabled>Disabled</Button>)
+    expect(screen.getByRole('button')).toBeDisabled()
+  })
+})
+```
+
+## Mocked Services
+
+The test setup includes mocks for:
+- **Next.js Router** - `useRouter` hook
+- **Next.js Navigation** - `usePathname`, `useSearchParams` hooks
+- **window.matchMedia** - Media query matching
+
+## Coverage
+
+To generate a coverage report:
+```bash
+npm test -- --coverage
+```
+
+Coverage reports will be generated in the `coverage/` directory.
+
+## Known Issues & Improvements
+
+1. Some auto-generated tests use basic templates and could be enhanced
+2. Component-specific tests would benefit from more detailed assertions
+3. Hook tests should be added for custom hooks in `src/hooks/`
+4. Integration tests could be added for complex component interactions
+
+## Integration with M3 Framework
+
+All tests are compatible with the Material Design 3 (M3) CSS framework:
+- Tests verify `mat-mdc-*` class application
+- No dependency on Tailwind CSS
+- Compatible with CSS custom properties for theming
+
+## CI/CD Integration
+
+Tests can be integrated into CI/CD pipelines:
+```bash
+npm test -- --ci --coverage --maxWorkers=2
+```
+
+## Further Reading
+- [Jest Documentation](https://jestjs.io)
+- [React Testing Library Guide](https://testing-library.com/docs/react-testing-library/intro/)
+- [Testing Best Practices](https://testingjavascript.com/)