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Quality Standards & Testing Strategy

Definition of Done​

A feature is considered "done" when:

  • Code written and peer-reviewed
  • Unit tests written and passing
  • Integration tests passing (if applicable)
  • Manual testing completed
  • Documentation updated
  • No critical bugs
  • Performance acceptable
  • Accessibility considered
  • Analytics events implemented
  • Merged to main branch

Testing Strategy​

Backend (Laravel)​

Unit Tests

  • Models and relationships
  • Service layer business logic
  • Validation rules
  • Helper functions

Feature Tests

  • API endpoints (request/response)
  • Authentication flows
  • Authorization rules
  • Database transactions

Coverage Target: 70%+ for critical paths

Tools:

  • PHPUnit
  • Laravel Dusk (E2E)
  • Pest (optional, modern syntax)

Example:

public function test_buyer_can_create_request()
{
    $user = User::factory()->create();
    
    $response = $this->actingAs($user)->postJson('/api/v1/requests', [
        'category' => 'phone',
        'product_brand' => 'Apple',
        'product_model' => 'iPhone 13',
        'budget_min' => 8000,
        'budget_max' => 10000,
        'location_district' => 'Nasr City',
    ]);
    
    $response->assertStatus(201);
    $this->assertDatabaseHas('buy_requests', [
        'buyer_id' => $user->id,
        'product_brand' => 'Apple',
    ]);
}

iOS (SwiftUI)​

Unit Tests

  • ViewModels
  • Services
  • Business logic
  • Data transformations

UI Tests

  • Critical user flows
  • Navigation
  • Form validation

Coverage Target: 60%+ for ViewModels

Tools:

  • XCTest
  • Quick/Nimble (optional)

Example:

func testFetchRequestsSuccess() async {
    let mockService = MockAPIService()
    mockService.requestsToReturn = [mockRequest]
    
    let viewModel = RequestsViewModel(apiService: mockService)
    await viewModel.fetchRequests()
    
    XCTAssertEqual(viewModel.requests.count, 1)
    XCTAssertFalse(viewModel.isLoading)
}

Android (Kotlin/Compose)​

Unit Tests

  • ViewModels
  • Repositories
  • Use cases
  • Mappers

UI Tests

  • Composable functions
  • Navigation
  • User interactions

Coverage Target: 60%+ for ViewModels

Tools:

  • JUnit
  • MockK
  • Compose Testing

Example:

@Test
fun `fetchRequests updates state correctly`() = runTest {
    val mockRepository = mockk<RequestsRepository>()
    coEvery { mockRepository.getMyRequests() } returns listOf(mockRequest)
    
    val viewModel = RequestsViewModel(mockRepository)
    viewModel.fetchRequests()
    
    assertEquals(1, viewModel.requests.value.size)
    assertFalse(viewModel.isLoading.value)
}

Flutter (Dart)​

Unit Tests

  • Providers
  • Services
  • Models
  • Utilities

Widget Tests

  • Individual widgets
  • Screen layouts
  • User interactions

Coverage Target: 60%+

Tools:

  • flutter_test
  • mockito

Example:

testWidgets('RequestCard displays correctly', (tester) async {
  await tester.pumpWidget(
    MaterialApp(
      home: RequestCard(
        request: mockRequest,
        onTap: () {},
      ),
    ),
  );
  
  expect(find.text('iPhone 13'), findsOneWidget);
  expect(find.text('8000 - 10000 EGP'), findsOneWidget);
});

Web (Next.js)​

Unit Tests

  • Utility functions
  • API client
  • Hooks
  • Components

Integration Tests

  • Page rendering
  • API integration
  • User flows

E2E Tests

  • Critical paths (Playwright)

Coverage Target: 50%+

Tools:

  • Jest
  • React Testing Library
  • Playwright

Code Quality​

Code Review Checklist​

  • Code follows style guide
  • No hardcoded values (use constants/env vars)
  • Error handling implemented
  • Logging added for debugging
  • No console.log/print statements in production
  • Security considerations addressed
  • Performance optimized
  • Accessibility considered
  • Tests included
  • Documentation updated

Style Guides​

Backend (PHP)

  • PSR-12 coding standard
  • Laravel best practices
  • Type hints required

iOS (Swift)

  • Swift API Design Guidelines
  • SwiftLint rules enforced

Android (Kotlin)

  • Kotlin coding conventions
  • ktlint rules enforced

Flutter (Dart)

  • Effective Dart style guide
  • flutter_lints rules enforced

Web (TypeScript)

  • ESLint + Prettier
  • Airbnb style guide (modified)

Performance Standards​

API Response Times​

  • p50: <100ms
  • p95: <200ms
  • p99: <500ms

Mobile App Performance​

  • App launch: <2s (cold start)
  • Screen transitions: <300ms
  • List scrolling: 60fps
  • Image loading: Progressive with placeholders

Database Queries​

  • Simple queries: <10ms
  • Complex queries: <50ms
  • Use indexes: All foreign keys and frequently queried columns

Security Standards​

Authentication​

  • JWT tokens with 24h expiry
  • Refresh tokens with 30d expiry
  • OTP rate limiting (3 per 10 min)
  • Password hashing (bcrypt, cost 12)

API Security​

  • HTTPS only in production
  • CORS configured properly
  • Rate limiting per user/IP
  • Input validation on all endpoints
  • SQL injection prevention (use ORM)
  • XSS prevention (escape output)

Mobile Security​

  • Secure token storage (Keychain/KeyStore)
  • Certificate pinning (production)
  • No sensitive data in logs
  • Obfuscation enabled (release builds)

Accessibility​

Mobile Apps​

  • VoiceOver/TalkBack support
  • Dynamic type support
  • Sufficient color contrast (WCAG AA)
  • Touch targets ≥44pt/48dp
  • Keyboard navigation (where applicable)

Web​

  • Semantic HTML
  • ARIA labels where needed
  • Keyboard navigation
  • Screen reader tested
  • Color contrast WCAG AA

Monitoring & Observability​

Logging​

Levels:

  • ERROR: Failures requiring immediate attention
  • WARN: Potential issues
  • INFO: Important business events
  • DEBUG: Detailed diagnostic info (dev only)

What to Log:

  • API requests/responses (sanitized)
  • Authentication events
  • Business events (request created, offer accepted, etc.)
  • Errors with stack traces
  • Performance metrics

What NOT to Log:

  • Passwords or tokens
  • Full credit card numbers
  • Personal identifiable information (PII)

Metrics​

Application Metrics:

  • Request rate (requests/min)
  • Error rate (%)
  • Response time (p50, p95, p99)
  • Active users
  • Queue depth

Business Metrics:

  • Requests posted/day
  • Offers made/day
  • Deals completed/day
  • Conversion rates
  • Time to first offer

Alerts​

Critical (Page immediately):

  • API error rate >10%
  • Database connection failures
  • Payment processing failures (Phase 2)

Warning (Notify in Slack):

  • API error rate >5%
  • Response time p95 >500ms
  • Queue depth >1000
  • Disk space >80%

Info (Dashboard only):

  • Deployment completed
  • Scheduled job completed
  • Daily metrics summary

Deployment Standards​

Environments​

  1. Development: Local machines
  2. Staging: AWS (mirrors production)
  3. Production: AWS (live users)

Deployment Process​

  1. Code merged to main
  2. CI/CD runs tests
  3. Build artifacts created
  4. Deploy to staging
  5. Smoke tests run
  6. Manual QA approval
  7. Deploy to production
  8. Monitor for 30 minutes

Rollback Plan​

  • Keep previous 3 versions deployable
  • Rollback script ready
  • Database migrations reversible
  • Feature flags for risky changes

Documentation Standards​

Code Documentation​

  • Public APIs documented
  • Complex logic explained
  • TODOs tracked in issue tracker
  • README in each major directory

API Documentation​

  • OpenAPI/Swagger spec maintained
  • Example requests/responses
  • Error codes documented
  • Authentication explained

User Documentation​

  • FAQ updated regularly
  • Help articles for common issues
  • Video tutorials for key flows
  • Contact support easily accessible

Continuous Improvement​

Weekly​

  • Review error logs
  • Check performance metrics
  • Triage new bugs
  • Update documentation

Monthly​

  • Review test coverage
  • Update dependencies
  • Security audit
  • Performance optimization

Quarterly​

  • Architecture review
  • Tech debt assessment
  • Team retrospective
  • Process improvements