4NK_IA_front/docs/TESTING.md

# Guide de tests - 4NK IA Front Notarial

## Vue d'ensemble

Ce guide couvre la stratégie de tests pour l'application 4NK IA Front Notarial, incluant les tests unitaires,
d'intégration et end-to-end.

## Stack de test

### Outils principaux

- **Vitest** : Framework de test rapide et moderne
- **Testing Library** : Tests d'intégration React
- **JSDOM** : Environnement DOM simulé
- **MSW** : Mock Service Worker pour les APIs
- **Coverage V8** : Rapport de couverture de code

### Configuration

#### vitest.config.ts

```typescript
import { defineConfig } from 'vitest/config'
import react from '@vitejs/plugin-react'

export default defineConfig({
  plugins: [react()],
  test: {
    environment: 'jsdom',
    globals: true,
    coverage: { 
      provider: 'v8',
      reporter: ['text', 'json', 'html'],
      exclude: [
        'node_modules/',
        'dist/',
        '**/*.d.ts',
        '**/*.config.*',
        '**/setup.*'
      ]
    }
  }
})
```

#### setup.test.ts

```typescript
import { expect, afterEach } from 'vitest'
import { cleanup } from '@testing-library/react'
import * as matchers from '@testing-library/jest-dom/matchers'

// Étendre les matchers de testing-library
expect.extend(matchers)

// Nettoyer après chaque test
afterEach(() => {
  cleanup()
})
```

## Types de tests

### Tests unitaires

#### Composants React

```typescript
// tests/components/Layout.test.tsx
import { render, screen } from '@testing-library/react'
import { BrowserRouter } from 'react-router-dom'
import { Provider } from 'react-redux'
import { store } from '../../src/store'
import { Layout } from '../../src/components/Layout'

const renderWithProviders = (ui: React.ReactElement) => {
  return render(
    <Provider store={store}>
      <BrowserRouter>
        {ui}
      </BrowserRouter>
    </Provider>
  )
}

describe('Layout', () => {
  it('should render the application title', () => {
    renderWithProviders(<Layout><div>Test content</div></Layout>)
    
    expect(screen.getByText('4NK IA - Front Notarial')).toBeInTheDocument()
  })

  it('should render navigation tabs', () => {
    renderWithProviders(<Layout><div>Test content</div></Layout>)
    
    expect(screen.getByRole('tablist')).toBeInTheDocument()
  })
})
```

#### Services API

```typescript
// tests/services/api.test.ts
import { describe, it, expect, vi, beforeEach } from 'vitest'
import { documentApi } from '../../src/services/api'
import axios from 'axios'

// Mock axios
vi.mock('axios')
const mockedAxios = vi.mocked(axios)

describe('documentApi', () => {
  beforeEach(() => {
    vi.clearAllMocks()
  })

  describe('upload', () => {
    it('should upload a document successfully', async () => {
      const mockResponse = {
        data: {
          id: 'doc_123',
          name: 'test.pdf',
          type: 'application/pdf',
          size: 1024,
          uploadDate: new Date(),
          status: 'completed'
        }
      }

      mockedAxios.create.mockReturnValue({
        post: vi.fn().mockResolvedValue(mockResponse)
      } as any)

      const file = new File(['content'], 'test.pdf', { type: 'application/pdf' })
      const result = await documentApi.upload(file)

      expect(result.id).toBe('doc_123')
      expect(result.name).toBe('test.pdf')
      expect(result.status).toBe('completed')
    })

    it('should return demo data on error', async () => {
      mockedAxios.create.mockReturnValue({
        post: vi.fn().mockRejectedValue(new Error('Network error'))
      } as any)

      const file = new File(['content'], 'test.pdf', { type: 'application/pdf' })
      const result = await documentApi.upload(file)

      expect(result.id).toMatch(/^demo-/)
      expect(result.name).toBe('test.pdf')
    })
  })
})
```

#### Redux Slices

```typescript
// tests/store/documentSlice.test.ts
import { describe, it, expect } from 'vitest'
import documentReducer, { setCurrentDocument } from '../../src/store/documentSlice'
import { uploadDocument } from '../../src/store/documentSlice'

describe('documentSlice', () => {
  const initialState = {
    documents: [],
    currentDocument: null,
    extractionResult: null,
    analysisResult: null,
    contextResult: null,
    conseilResult: null,
    loading: false,
    error: null
  }

  it('should handle setCurrentDocument', () => {
    const document = {
      id: 'doc_123',
      name: 'test.pdf',
      type: 'application/pdf',
      size: 1024,
      uploadDate: new Date(),
      status: 'completed' as const
    }

    const action = setCurrentDocument(document)
    const newState = documentReducer(initialState, action)

    expect(newState.currentDocument).toEqual(document)
    expect(newState.extractionResult).toBeNull()
  })

  it('should handle uploadDocument.pending', () => {
    const action = { type: uploadDocument.pending.type }
    const newState = documentReducer(initialState, action)

    expect(newState.loading).toBe(true)
    expect(newState.error).toBeNull()
  })
})
```

### Tests d'intégration

#### Vues complètes

```typescript
// tests/views/UploadView.test.tsx
import { render, screen, fireEvent, waitFor } from '@testing-library/react'
import userEvent from '@testing-library/user-event'
import { Provider } from 'react-redux'
import { BrowserRouter } from 'react-router-dom'
import { store } from '../../src/store'
import { UploadView } from '../../src/views/UploadView'

const renderWithProviders = (ui: React.ReactElement) => {
  return render(
    <Provider store={store}>
      <BrowserRouter>
        {ui}
      </BrowserRouter>
    </Provider>
  )
}

describe('UploadView', () => {
  it('should render upload area', () => {
    renderWithProviders(<UploadView />)
    
    expect(screen.getByText(/glisser-déposer/i)).toBeInTheDocument()
  })

  it('should handle file upload', async () => {
    const user = userEvent.setup()
    renderWithProviders(<UploadView />)
    
    const file = new File(['content'], 'test.pdf', { type: 'application/pdf' })
    const input = screen.getByLabelText(/sélectionner des fichiers/i)
    
    await user.upload(input, file)
    
    await waitFor(() => {
      expect(screen.getByText('test.pdf')).toBeInTheDocument()
    })
  })

  it('should display document list after upload', async () => {
    const user = userEvent.setup()
    renderWithProviders(<UploadView />)
    
    const file = new File(['content'], 'test.pdf', { type: 'application/pdf' })
    const input = screen.getByLabelText(/sélectionner des fichiers/i)
    
    await user.upload(input, file)
    
    await waitFor(() => {
      expect(screen.getByRole('list')).toBeInTheDocument()
      expect(screen.getByText('test.pdf')).toBeInTheDocument()
    })
  })
})
```

#### Navigation

```typescript
// tests/navigation.test.tsx
import { render, screen } from '@testing-library/react'
import userEvent from '@testing-library/user-event'
import { BrowserRouter } from 'react-router-dom'
import { Provider } from 'react-redux'
import { store } from '../src/store'
import App from '../src/App'

const renderWithProviders = (ui: React.ReactElement) => {
  return render(
    <Provider store={store}>
      <BrowserRouter>
        {ui}
      </BrowserRouter>
    </Provider>
  )
}

describe('Navigation', () => {
  it('should navigate between tabs', async () => {
    const user = userEvent.setup()
    renderWithProviders(<App />)
    
    // Vérifier que l'onglet Upload est actif par défaut
    expect(screen.getByText('Upload')).toHaveAttribute('aria-selected', 'true')
    
    // Cliquer sur l'onglet Extraction
    await user.click(screen.getByText('Extraction'))
    
    expect(screen.getByText('Extraction')).toHaveAttribute('aria-selected', 'true')
    expect(screen.getByText('Upload')).toHaveAttribute('aria-selected', 'false')
  })
})
```

### Tests d'API avec MSW

#### Configuration MSW

```typescript
// tests/mocks/handlers.ts
import { http, HttpResponse } from 'msw'

export const handlers = [
  // Upload de document
  http.post('/api/documents/upload', () => {
    return HttpResponse.json({
      id: 'doc_123',
      name: 'test.pdf',
      type: 'application/pdf',
      size: 1024,
      uploadDate: new Date().toISOString(),
      status: 'completed'
    })
  }),

  // Extraction de données
  http.get('/api/documents/:id/extract', () => {
    return HttpResponse.json({
      documentId: 'doc_123',
      text: 'Texte extrait du document...',
      language: 'fr',
      documentType: 'Acte de vente',
      identities: [
        {
          id: '1',
          type: 'person',
          firstName: 'Jean',
          lastName: 'Dupont',
          birthDate: '1980-05-15',
          nationality: 'Française',
          confidence: 0.95
        }
      ],
      addresses: [],
      properties: [],
      contracts: [],
      signatures: [],
      confidence: 0.92
    })
  }),

  // Erreur de connexion
  http.get('/api/documents/:id/analyze', () => {
    return HttpResponse.error()
  })
]
```

#### Tests avec MSW

```typescript
// tests/integration/api.test.tsx
import { setupServer } from 'msw/node'
import { handlers } from '../mocks/handlers'
import { documentApi } from '../../src/services/api'

const server = setupServer(...handlers)

beforeAll(() => server.listen())
afterEach(() => server.resetHandlers())
afterAll(() => server.close())

describe('API Integration', () => {
  it('should extract document data', async () => {
    const result = await documentApi.extract('doc_123')
    
    expect(result.documentId).toBe('doc_123')
    expect(result.identities).toHaveLength(1)
    expect(result.identities[0].firstName).toBe('Jean')
  })

  it('should handle API errors gracefully', async () => {
    const result = await documentApi.analyze('doc_123')
    
    // Devrait retourner des données de démonstration
    expect(result.documentId).toBe('doc_123')
    expect(result.credibilityScore).toBeDefined()
  })
})
```

## Tests de performance

### Tests de rendu

```typescript
// tests/performance/render.test.tsx
import { render } from '@testing-library/react'
import { Provider } from 'react-redux'
import { BrowserRouter } from 'react-router-dom'
import { store } from '../../src/store'
import App from '../../src/App'

describe('Performance', () => {
  it('should render app within acceptable time', () => {
    const start = performance.now()
    
    render(
      <Provider store={store}>
        <BrowserRouter>
          <App />
        </BrowserRouter>
      </Provider>
    )
    
    const end = performance.now()
    const renderTime = end - start
    
    // Le rendu initial devrait prendre moins de 100ms
    expect(renderTime).toBeLessThan(100)
  })
})
```

### Tests de mémoire

```typescript
// tests/performance/memory.test.tsx
import { render, cleanup } from '@testing-library/react'
import { Provider } from 'react-redux'
import { BrowserRouter } from 'react-router-dom'
import { store } from '../../src/store'
import { UploadView } from '../../src/views/UploadView'

describe('Memory Management', () => {
  it('should not leak memory on multiple renders', () => {
    const initialMemory = (performance as any).memory?.usedJSHeapSize || 0
    
    // Rendre et nettoyer plusieurs fois
    for (let i = 0; i < 10; i++) {
      render(
        <Provider store={store}>
          <BrowserRouter>
            <UploadView />
          </BrowserRouter>
        </Provider>
      )
      cleanup()
    }
    
    const finalMemory = (performance as any).memory?.usedJSHeapSize || 0
    const memoryIncrease = finalMemory - initialMemory
    
    // L'augmentation de mémoire devrait être raisonnable
    expect(memoryIncrease).toBeLessThan(10 * 1024 * 1024) // 10MB
  })
})
```

## Tests d'accessibilité

### Tests avec jest-axe

```typescript
// tests/accessibility/a11y.test.tsx
import { render } from '@testing-library/react'
import { axe, toHaveNoViolations } from 'jest-axe'
import { Provider } from 'react-redux'
import { BrowserRouter } from 'react-router-dom'
import { store } from '../../src/store'
import { Layout } from '../../src/components/Layout'

expect.extend(toHaveNoViolations)

describe('Accessibility', () => {
  it('should not have accessibility violations', async () => {
    const { container } = render(
      <Provider store={store}>
        <BrowserRouter>
          <Layout>
            <div>Test content</div>
          </Layout>
        </BrowserRouter>
      </Provider>
    )
    
    const results = await axe(container)
    expect(results).toHaveNoViolations()
  })

  it('should have proper ARIA labels', () => {
    render(
      <Provider store={store}>
        <BrowserRouter>
          <Layout>
            <div>Test content</div>
          </Layout>
        </BrowserRouter>
      </Provider>
    )
    
    expect(screen.getByRole('banner')).toBeInTheDocument()
    expect(screen.getByRole('tablist')).toBeInTheDocument()
  })
})
```

## Scripts de test

### package.json

```json
{
  "scripts": {
    "test": "vitest",
    "test:ui": "vitest --ui",
    "test:run": "vitest run",
    "test:coverage": "vitest run --coverage",
    "test:watch": "vitest --watch",
    "test:debug": "vitest --inspect-brk"
  }
}
```

### Exécution des tests

```bash
# Tests en mode watch
npm run test

# Tests avec interface graphique
npm run test:ui

# Tests une seule fois
npm run test:run

# Tests avec couverture
npm run test:coverage

# Tests en mode debug
npm run test:debug
```

## Configuration CI/CD

### GitHub Actions

```yaml
name: Tests

on: [push, pull_request]

jobs:
  test:
    runs-on: ubuntu-latest
    
    steps:
    - uses: actions/checkout@v3
    
    - name: Setup Node.js
      uses: actions/setup-node@v3
      with:
        node-version: '22.12'
        cache: 'npm'
    
    - name: Install dependencies
      run: npm ci
    
    - name: Run tests
      run: npm run test:coverage
    
    - name: Upload coverage
      uses: codecov/codecov-action@v3
      with:
        file: ./coverage/lcov.info
```

## Bonnes pratiques

### Organisation des tests

- **Un fichier de test par composant** : `Component.test.tsx`
- **Tests groupés par fonctionnalité** : `describe` blocks
- **Tests isolés** : Chaque test doit être indépendant
- **Noms descriptifs** : `it('should do something specific')`

### Mocking

- **Mock des dépendances externes** : APIs, services
- **Mock des hooks** : React hooks personnalisés
- **Mock des modules** : Modules Node.js

### Assertions

- **Assertions spécifiques** : Éviter les assertions génériques
- **Tests de régression** : Vérifier les bugs corrigés
- **Tests de cas limites** : Valeurs nulles, erreurs

### Performance

- **Tests rapides** : Éviter les tests lents
- **Parallélisation** : Utiliser `--threads` pour Vitest
- **Cache** : Utiliser le cache des dépendances

## Métriques de qualité

### Couverture de code

- **Minimum 80%** : Couverture globale
- **Minimum 90%** : Composants critiques
- **100%** : Fonctions utilitaires

### Types de couverture

- **Statements** : Instructions exécutées
- **Branches** : Branches conditionnelles
- **Functions** : Fonctions appelées
- **Lines** : Lignes de code exécutées

### Rapport de couverture

```bash
# Générer le rapport
npm run test:coverage

# Ouvrir le rapport HTML
open coverage/index.html
```