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Mobile Client Testing Strategy

Project: OpenCode Nexus - Mobile Client Version: 1.0.0 Last Updated: 2025-11-06 Status: Mobile-First Testing Framework

1. Mobile Testing Philosophy

OpenCode Nexus follows a mobile-first testing approach that prioritizes touch interactions, offline capabilities, and cross-platform compatibility. Testing is integrated throughout the development process with special emphasis on mobile user experience and performance.

1.1 Core Testing Principles

  • Mobile-First Testing: All tests prioritize mobile user journeys
  • Touch Interaction Testing: Comprehensive gesture and touch testing
  • Offline Capability Testing: Full offline/online transition testing
  • Cross-Platform Validation: iOS, Android, and PWA compatibility
  • Performance Benchmarking: Mobile-specific performance targets
  • Accessibility Verification: WCAG 2.2 AA compliance testing

2. Testing Pyramid for Mobile Client

                     /\
                    /  \
                   / E2E \
                  /______\
                 /        \
                /Integration\
               /____________\
              /              \
             /   Component    \
            /_________________\
           /                  \
          /     Unit Tests     \
         /____________________/

2.1 Unit Testing (Foundation)

Focus: Individual functions and components Coverage Target: 90% for critical mobile components Tools: Vitest (frontend), Rust built-in testing (backend)

2.2 Component Testing (Mobile UI)

Focus: Touch interactions and mobile components Coverage Target: 100% for touch targets and gestures Tools: Playwright for component testing

2.3 Integration Testing (Client-Server)

Focus: API communication and data synchronization Coverage Target: 95% for connection and sync scenarios Tools: Custom integration test suite

2.4 End-to-End Testing (User Journeys)

Focus: Complete mobile user workflows Coverage Target: 100% for critical user journeys Tools: Playwright for mobile E2E testing

3. Mobile-Specific Test Categories

3.1 Touch Interaction Testing

Gesture Testing

// Touch gesture test example
test('swipe to navigate conversations', async ({ page }) => {
  await page.touchstart('#conversation-list', { x: 300, y: 200 });
  await page.touchmove('#conversation-list', { x: 100, y: 200 });
  await page.touchend('#conversation-list');

  await expect(page.locator('.conversation-2')).toBeVisible();
});

Touch Target Testing

// Accessibility touch target test
test('all interactive elements meet 44px minimum', async ({ page }) => {
  const buttons = await page.locator('button, [role="button"]').all();

  for (const button of buttons) {
    const box = await button.boundingBox();
    expect(box.width).toBeGreaterThanOrEqual(44);
    expect(box.height).toBeGreaterThanOrEqual(44);
  }
});

3.2 Offline Capability Testing

Offline Composition Testing

// Offline message composition
test('compose messages offline', async ({ page, browserContext }) => {
  // Simulate offline
  await browserContext.setOffline(true);

  await page.fill('.message-input', 'Hello AI!');
  await page.click('.send-button');

  // Verify message queued locally
  await expect(page.locator('.queued-message')).toBeVisible();
});

Sync Testing

// Background sync test
test('automatic sync when online', async ({ page, browserContext }) => {
  // Queue messages offline
  await browserContext.setOffline(true);
  await composeAndSendMessage(page, 'Offline message');

  // Restore connection
  await browserContext.setOffline(false);

  // Verify sync completes
  await expect(page.locator('.sync-complete')).toBeVisible();
  await expect(page.locator('.ai-response')).toBeVisible();
});

3.3 Connection Management Testing

Server Connection Testing

// Server connection test
test('connect to OpenCode server', async ({ page }) => {
  await page.fill('.server-host', 'opencode.example.com');
  await page.fill('.server-port', '443');
  await page.click('.connect-button');

  await expect(page.locator('.connection-success')).toBeVisible();
});

SSL Validation Testing

// SSL certificate validation
test('handle SSL certificate issues', async ({ page }) => {
  // Mock invalid certificate
  await mockInvalidCertificate();

  await attemptConnection(page);

  await expect(page.locator('.ssl-warning')).toBeVisible();
  await expect(page.locator('.certificate-details')).toBeVisible();
});

4. Platform-Specific Testing

4.1 iOS Testing Strategy

iOS Simulator Testing

# iOS simulator test command
npx playwright test --config=playwright.ios.config.ts

TestFlight Beta Testing

  • Internal Testing: Development team testing
  • External Testing: Limited user beta testing
  • App Store Review: Pre-submission validation

iOS-Specific Tests

  • Touch ID/Face ID: Biometric authentication testing
  • iOS Permissions: Camera, microphone, notification permissions
  • Background Modes: Background sync and notifications
  • iOS Keychain: Secure credential storage testing

4.2 Android Testing Strategy (Planned)

Android Emulator Testing

# Android emulator test command
npx playwright test --config=playwright.android.config.ts

Google Play Beta Testing

  • Internal Testing: Closed beta with development team
  • Open Beta: Public beta testing
  • Staged Rollout: Gradual release to production

Android-Specific Tests

  • Biometric Authentication: Fingerprint and face unlock
  • Android Permissions: Runtime permission handling
  • Material Design: Component behavior validation
  • Android Keystore: Secure storage testing

4.3 PWA Testing Strategy

Browser Compatibility Testing

// PWA installation test
test('install as PWA', async ({ browser, page }) => {
  // Mock PWA installation prompt
  await mockPwaInstallPrompt();

  await page.click('.install-button');

  // Verify app installed
  const manifest = await page.evaluate(() => {
    return window.navigator.serviceWorker?.getRegistration();
  });

  expect(manifest).toBeTruthy();
});

Offline PWA Testing

  • Service Worker: Background sync and caching
  • Web App Manifest: Installation and metadata
  • Push Notifications: Background message handling
  • Responsive Design: Mobile browser compatibility

5. Performance Testing

5.1 Mobile Performance Benchmarks

Startup Performance

// App startup time test
test('app startup under 2 seconds', async ({ page }) => {
  const startTime = Date.now();

  await page.goto('/');
  await page.waitForSelector('.chat-interface');

  const loadTime = Date.now() - startTime;
  expect(loadTime).toBeLessThan(2000);
});

Memory Usage Testing

// Memory usage monitoring
test('memory usage under 50MB', async ({ page }) => {
  // Perform memory-intensive operations
  await createLargeConversation(page);

  const memoryUsage = await page.evaluate(() => {
    return performance.memory.usedJSHeapSize / 1024 / 1024;
  });

  expect(memoryUsage).toBeLessThan(50);
});

5.2 Network Performance Testing

Connection Quality Testing

// Network condition simulation
test('handle slow 3G connections', async ({ browserContext }) => {
  await browserContext.emulateNetworkConditions({
    download: 750 * 1024 / 8, // 750 Kbps
    upload: 250 * 1024 / 8,   // 250 Kbps
    latency: 100
  });

  await sendMessageAndVerifyResponse(page);
});

Offline/Online Transitions

// Network switching test
test('handle network transitions', async ({ browserContext, page }) => {
  // Start online
  await sendMessage(page, 'Online message');

  // Go offline
  await browserContext.setOffline(true);
  await sendMessage(page, 'Offline message');

  // Come back online
  await browserContext.setOffline(false);

  // Verify sync
  await expect(page.locator('.sync-indicator')).toBeVisible();
});

6. Accessibility Testing

6.1 WCAG 2.2 AA Compliance

Touch Target Testing

// Minimum touch target size
test('44px minimum touch targets', async ({ page }) => {
  const interactives = await page.locator(`
    button, a, input, select, textarea,
    [role="button"], [role="link"], [role="textbox"]
  `).all();

  for (const element of interactives) {
    const box = await element.boundingBox();
    expect(box.width).toBeGreaterThanOrEqual(44);
    expect(box.height).toBeGreaterThanOrEqual(44);
  }
});

Screen Reader Testing

// Screen reader compatibility
test('screen reader announcements', async ({ page }) => {
  await page.keyboard.press('Tab');
  await page.keyboard.press('Tab');

  // Verify focus announcements
  const announcements = await page.evaluate(() => {
    return window.speechSynthesis.speaking;
  });

  expect(announcements).toBe(true);
});

6.2 Motor Impairment Testing

Keyboard Navigation

// Full keyboard accessibility
test('keyboard navigation works', async ({ page }) => {
  await page.keyboard.press('Tab');
  await page.keyboard.press('Tab');
  await page.keyboard.press('Enter');

  await expect(page.locator('.menu-open')).toBeVisible();
});

Time Extension Testing

// No time limits for interactions
test('no interaction timeouts', async ({ page }) => {
  // Simulate slow user
  await page.waitForTimeout(10000); // 10 seconds

  // Verify no timeout occurred
  await expect(page.locator('.timeout-error')).not.toBeVisible();
});

7. Security Testing

7.1 Connection Security Testing

SSL/TLS Validation

// Certificate validation testing
test('reject invalid SSL certificates', async ({ page }) => {
  await mockInvalidCertificate();

  await attemptConnection(page);

  await expect(page.locator('.ssl-error')).toBeVisible();
  await expect(page.locator('.connect-button')).toBeDisabled();
});

Man-in-the-Middle Protection

// MITM attack simulation
test('detect MITM attacks', async ({ page }) => {
  await setupMitmProxy();

  await attemptConnection(page);

  await expect(page.locator('.security-warning')).toBeVisible();
});

7.2 Data Protection Testing

Local Data Encryption

// Offline data encryption
test('conversations encrypted locally', async ({ page }) => {
  await composeMessage(page, 'Secret message');
  await browserContext.setOffline(true);

  // Verify data is encrypted in storage
  const storedData = await getIndexedDBData();
  expect(storedData).not.toContain('Secret message');
});

8. Continuous Integration

8.1 Mobile CI Pipeline

iOS Build Pipeline

# .github/workflows/ios-test.yml
name: iOS Tests
on: [push, pull_request]
jobs:
  test:
    runs-on: macos-latest
    steps:
      - uses: actions/checkout@v4
      - uses: actions/setup-node@v4
      - run: npm ci
      - run: npx playwright install
      - run: npx playwright test --config=playwright.ios.config.ts

Cross-Platform Testing

  • iOS Simulator: Automated iOS simulator testing
  • Android Emulator: Automated Android emulator testing
  • Browser Testing: Chrome, Safari, Firefox mobile testing
  • Device Farm: Real device testing for critical features

8.2 Performance Monitoring

Automated Performance Tests

# Performance regression testing
- name: Performance Tests
  run: |
    npm run test:performance
    # Fail if startup > 2s or memory > 50MB

Battery Impact Testing

# Battery drain monitoring
- name: Battery Impact Test
  run: |
    npm run test:battery
    # Monitor background battery usage

9. Test Data Management

9.1 Test Server Infrastructure

Mock OpenCode Server

// Mock server for testing
const mockServer = setupMockOpenCodeServer({
  responses: {
    '/api/chat': { response: 'Mock AI response' },
    '/api/session': { sessionId: 'test-session-123' }
  }
});

Test Data Scenarios

  • Valid Connections: Successful server connections
  • Invalid Certificates: SSL validation failures
  • Network Issues: Connection drops and recovery
  • Large Conversations: Performance with 1000+ messages

9.2 Test Environment Management

Mobile Test Environments

  • Development: Local testing with mock servers
  • Staging: Test against staging OpenCode servers
  • Production: Limited production testing with safeguards

Testing Status: Mobile-first testing framework established Next Focus: iOS TestFlight testing and PWA validation docs/client/TESTING.md