Testing Strategy
The BrightForest ecosystem employs a comprehensive, multi-layered testing strategy to ensure quality, reliability, and accessibility across all 13 domains. Our approach combines behavior-driven development (BDD), visual regression testing, accessibility validation, and performance monitoring.
Testing Philosophy
Core Principles
- Quality First: Testing is not an afterthought but integral to development
- Automation-Centric: Maximize automated test coverage to enable rapid iteration
- User-Focused: Test from the user's perspective using BDD scenarios
- Cross-Browser: Ensure consistent experience across all major browsers
- Accessibility: Universal design accessible to all users
Testing Pyramid
Code
BDD Testing with Cucumber & Playwright
Overview
We use Cucumber for defining behavior in Gherkin syntax and Playwright for executing tests across browsers. This combination provides:
- Human-readable test scenarios
- Strong cross-browser support (Chromium, Firefox, WebKit)
- Parallel test execution
- Rich debugging capabilities
- Screenshot and video capture
Feature File Structure
Code
Step Definition Pattern
Code
Page Object Model
We implement the Page Object Model (POM) to maintain clean, reusable test code:
Code
Test Organization
Directory Structure
Code
Feature Categories
-
Shared Features (25 features)
- Executed across all 13 domains
- Core functionality and UX patterns
- Highest automation priority
-
Cross-Site Features (28 features)
- Executed for specific domain groups
- Shared specialized functionality
- Medium automation priority
-
Site-Specific Features (32 features)
- Executed for individual domains
- Unique domain capabilities
- Targeted automation per domain
Visual Regression Testing
Overview
Visual regression testing ensures UI consistency and prevents unintended visual changes across deployments.
Implementation
We use Playwright's built-in screenshot comparison:
Code
Testing Strategy
- Full Page Screenshots: Capture entire page layouts
- Component Screenshots: Test individual UI components
- Responsive Testing: Validate across viewport sizes
- Theme Testing: Test light and dark modes
- Cross-Browser: Ensure visual consistency across browsers
Viewport Matrix
| Device Type | Width | Height | Browser |
|---|---|---|---|
| Mobile | 375px | 667px | Chrome, Safari |
| Tablet | 768px | 1024px | Chrome, Safari |
| Desktop | 1920px | 1080px | Chrome, Firefox, Safari |
| Wide | 2560px | 1440px | Chrome |
Baseline Management
- Initial Baseline: First screenshot becomes reference
- Review Process: Visual diff reviewed before accepting changes
- Update Workflow: Approved changes update baseline
- Version Control: Baselines tracked in git repository
Accessibility Testing
WCAG 2.1 Compliance
We target WCAG 2.1 Level AA compliance across all domains.
Automated Testing
Using axe-core integrated with Playwright:
Code
Testing Categories
-
Keyboard Navigation
- All interactive elements accessible via keyboard
- Logical tab order
- Visible focus indicators
-
Screen Reader Support
- Proper semantic HTML
- ARIA labels and descriptions
- Meaningful heading hierarchy
-
Color Contrast
- Minimum 4.5:1 for normal text
- Minimum 3:1 for large text
- Contrast testing in light and dark modes
-
Forms & Inputs
- Proper label associations
- Error message accessibility
- Required field indicators
-
Media & Images
- Alternative text for images
- Captions for video content
- Transcripts where applicable
Performance Testing
Core Web Vitals
We monitor and test against Core Web Vitals thresholds:
| Metric | Good | Needs Improvement | Poor |
|---|---|---|---|
| LCP (Largest Contentful Paint) | ≤ 2.5s | 2.5s - 4.0s | > 4.0s |
| FID (First Input Delay) | ≤ 100ms | 100ms - 300ms | > 300ms |
| CLS (Cumulative Layout Shift) | ≤ 0.1 | 0.1 - 0.25 | > 0.25 |
Lighthouse Integration
Automated Lighthouse audits in CI/CD:
Code
Performance Budgets
- Page Load: < 3 seconds on 3G
- Time to Interactive: < 5 seconds
- Bundle Size: < 300KB (gzipped)
- Image Optimization: WebP with fallbacks
Cross-Browser Testing
Browser Matrix
| Browser | Versions | Platform |
|---|---|---|
| Chrome | Latest, Latest-1 | Desktop, Mobile |
| Firefox | Latest, Latest-1 | Desktop |
| Safari | Latest, Latest-1 | Desktop, Mobile |
| Edge | Latest | Desktop |
Testing Approach
- Parallel Execution: Run tests across browsers simultaneously
- Browser-Specific Tests: Handle browser-specific behaviors
- Graceful Degradation: Ensure fallbacks work correctly
Code
CI/CD Integration
Continuous Integration
Tests run automatically on:
- Pull Requests: All shared and affected domain tests
- Commits to Main: Full test suite across all domains
- Scheduled: Nightly full regression tests
- Pre-Deployment: Smoke tests before production deployment
Pipeline Stages
- Build: Compile and build all packages
- Unit Tests: Fast unit and component tests
- Integration Tests: API and integration tests
- E2E Tests: BDD scenarios with Playwright
- Visual Regression: Screenshot comparison
- Accessibility: A11y validation
- Performance: Lighthouse audits
- Report: Generate and publish test reports
Failure Handling
- Auto-Retry: Flaky tests retried up to 3 times
- Detailed Reports: Screenshots, videos, traces for failures
- Notifications: Slack/email alerts for test failures
- Blocking: Failed tests block deployment
Test Data Management
Fixtures
Reusable test data for consistent testing:
Code
Database State
- Isolation: Each test runs with clean state
- Seeding: Automated test data seeding
- Cleanup: Post-test cleanup to prevent pollution
Reporting & Monitoring
Test Reports
- Cucumber HTML Reports: Human-readable BDD results
- Playwright Reports: Detailed execution reports with traces
- Coverage Reports: Code coverage metrics
- Visual Diff Reports: Screenshot comparison results
Metrics Tracking
- Test Execution Time: Monitor and optimize slow tests
- Pass/Fail Rates: Track test stability over time
- Coverage Trends: Ensure coverage doesn't regress
- Flaky Test Detection: Identify and fix unreliable tests
Dashboards
Real-time test metrics displayed on dashboards:
- Overall test pass rate
- Test execution duration trends
- Coverage by domain and feature
- Flaky test identification
- Browser-specific failure rates
Best Practices
Writing Tests
- Descriptive Scenarios: Clear, business-readable feature descriptions
- Independent Tests: Each test should run independently
- Wait Strategies: Use proper wait conditions, avoid hard waits
- Selectors: Prefer accessible selectors (role, label, text)
- Assertions: Clear, specific assertions with meaningful messages
Maintenance
- Regular Reviews: Weekly test suite health checks
- Refactoring: Continuously improve test code quality
- Documentation: Keep test documentation up-to-date
- Performance: Optimize slow tests for faster feedback
Anti-Patterns to Avoid
- ❌ Hard-coded waits (
sleep,setTimeout) - ❌ Brittle selectors (CSS classes, XPath)
- ❌ Test interdependencies
- ❌ Ignoring flaky tests
- ❌ Testing implementation details
Testing Tools & Technologies
Core Stack
- Playwright: Browser automation and E2E testing
- Cucumber: BDD framework for Gherkin scenarios
- Vitest: Unit and component testing
- axe-core: Accessibility testing
- Lighthouse: Performance and quality audits
Supporting Tools
- TypeScript: Type-safe test code
- dotenv: Environment configuration
- Winston: Test logging
- Allure: Advanced reporting
- Percy/Chromatic: Visual regression services (optional)
Getting Started
Running Tests Locally
Code
Writing Your First Test
- Create feature file in
tests/features/ - Write scenarios in Gherkin syntax
- Implement step definitions
- Run test locally
- Review results and iterate
- Commit when passing
Future Enhancements
- AI-Powered Testing: Intelligent test generation and maintenance
- Visual AI: ML-based visual regression detection
- Performance Prediction: Predict performance impacts before deployment
- Self-Healing Tests: Auto-update selectors when UI changes
- Load Testing: Comprehensive load and stress testing
- Security Testing: Automated security vulnerability scanning
Related Documentation
- Feature Coverage - Complete BDD feature catalog
- Main Roadmap - Ecosystem overview
- Site Roadmaps - Domain-specific plans
Testing is not just about finding bugs—it's about building confidence in our platform and delivering exceptional user experiences across the entire BrightForest ecosystem.