253 lines
7.7 KiB
Markdown
253 lines
7.7 KiB
Markdown
# E2E Test Environment Improvements
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## Problem Summary
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Your original e2e test environment had several critical issues:
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1. **Hybrid Architecture**: Website ran locally via Playwright's `webServer` while API/DB ran in Docker
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2. **SWC Compilation Issues**: Next.js SWC had problems in Docker containers
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3. **CI Incompatibility**: The hybrid approach wouldn't work reliably in CI environments
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4. **Complex Setup**: Multiple scripts and port configurations needed
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5. **Port Conflicts**: Multiple services competing for ports (3000, 3001, 3101, 5432, 5433)
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## Root Cause Analysis
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### SWC Compilation Issues in Docker
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The SWC (Speedy Web Compiler) issues were caused by:
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- Missing native build tools (Python, make, g++)
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- File system performance issues with volume mounts
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- Insufficient memory/CPU allocation
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- Missing dependencies in Alpine Linux
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### CI Incompatibility
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The hybrid approach failed in CI because:
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- CI environments don't have local Node.js processes
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- Port management becomes complex
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- Environment consistency is harder to maintain
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- Debugging is more difficult
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## Solution: Unified Docker Architecture
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### Architecture Overview
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```
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┌─────────────────────────────────────────────────────────────┐
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│ Docker Network: gridpilot-e2e-network │
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│ │
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│ ┌──────────────┐ ┌──────────────┐ ┌──────────────┐ │
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│ │ Playwright │───▶│ Website │───▶│ API │ │
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│ │ Runner │ │ (Next.js) │ │ (NestJS) │ │
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│ │ │ │ Port: 3000 │ │ Port: 3000 │ │
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│ └──────────────┘ └──────────────┘ └──────────────┘ │
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│ │ │ │ │
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│ └───────────────────┴───────────────────┴───────────┘
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│ │
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│ ┌───────▼────────┐
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│ │ PostgreSQL │
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│ │ Port: 5432 │
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│ └────────────────┘
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└─────────────────────────────────────────────────────────────┘
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```
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### Key Components
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#### 1. Optimized Next.js Dockerfile (`apps/website/Dockerfile.e2e`)
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```dockerfile
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# Includes all SWC build dependencies
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RUN apk add --no-cache python3 make g++ git curl
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# Multi-stage build for optimization
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# Production stage only includes runtime dependencies
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```
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#### 2. Unified Docker Compose (`docker-compose.e2e.yml`)
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- **Database**: PostgreSQL on port 5434
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- **API**: NestJS on port 3101
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- **Website**: Next.js on port 3100
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- **Playwright**: Test runner in container
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- All services on isolated network
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#### 3. Updated Playwright Config
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- No `webServer` - everything runs in Docker
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- Base URL: `http://website:3000` (container network)
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- No local dependencies
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#### 4. Simplified Package.json Scripts
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```bash
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# Single command for complete e2e testing
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npm run test:e2e:website
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# Individual control commands
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npm run docker:e2e:up
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npm run docker:e2e:down
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npm run docker:e2e:logs
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npm run docker:e2e:clean
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```
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## Benefits
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### ✅ Reliability
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- **No SWC issues**: Optimized Dockerfile with all build tools
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- **No port conflicts**: Isolated network and unique ports
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- **No local dependencies**: Everything in containers
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### ✅ CI Compatibility
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- **Identical environments**: Local and CI run the same setup
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- **Single command**: Easy to integrate in CI pipelines
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- **Deterministic**: No "works on my machine" issues
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### ✅ Developer Experience
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- **Simplicity**: One command vs multiple steps
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- **Debugging**: Easy log access and service management
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- **Speed**: No local server startup overhead
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### ✅ Maintainability
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- **Single source of truth**: One docker-compose file
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- **Clear documentation**: Updated README with migration guide
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- **Future-proof**: Easy to extend and modify
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## Migration Guide
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### From Legacy to Unified
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1. **Stop existing services**:
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```bash
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npm run docker:test:down
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npm run docker:dev:down
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```
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2. **Clean up**:
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```bash
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npm run docker:test:clean
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```
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3. **Use new approach**:
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```bash
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npm run test:e2e:website
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```
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### What Changes
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| Before | After |
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|--------|-------|
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| `npm run test:docker:website` | `npm run test:e2e:website` |
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| Website: Local (3000) | Website: Docker (3100) |
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| API: Docker (3101) | API: Docker (3101) |
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| DB: Docker (5433) | DB: Docker (5434) |
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| Playwright: Local | Playwright: Docker |
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| 5+ commands | 1 command |
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## Testing the New Setup
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### Quick Test
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```bash
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# Run complete e2e test suite
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npm run test:e2e:website
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```
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### Manual Verification
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```bash
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# Start services
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npm run docker:e2e:up
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# Check status
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npm run docker:e2e:ps
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# View logs
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npm run docker:e2e:logs
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# Test website manually
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curl http://localhost:3100
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# Test API manually
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curl http://localhost:3101/health
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# Stop services
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npm run docker:e2e:down
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```
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## Files Created/Modified
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### New Files
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- `apps/website/Dockerfile.e2e` - Optimized Next.js image
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- `docker-compose.e2e.yml` - Unified test environment
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- `E2E_TESTING_IMPROVEMENTS.md` - This document
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### Modified Files
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- `playwright.website.config.ts` - Containerized setup
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- `package.json` - New scripts
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- `README.docker.md` - Updated documentation
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## Troubleshooting
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### Common Issues
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**Issue**: "Website not building"
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- **Solution**: Ensure Docker has 4GB+ memory
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**Issue**: "Port already in use"
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- **Solution**: `npm run docker:e2e:clean && npm run docker:e2e:up`
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**Issue**: "Module not found"
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- **Solution**: `npm run docker:e2e:clean` to rebuild
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**Issue**: "Playwright timeout"
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- **Solution**: Increase timeout in `playwright.website.config.ts`
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### Debug Commands
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```bash
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# View all logs
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npm run docker:e2e:logs
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# Check specific service
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docker-compose -f docker-compose.e2e.yml logs -f website
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# Shell into container
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docker-compose -f docker-compose.e2e.yml exec website sh
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# Rebuild everything
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npm run docker:e2e:clean && npm run docker:e2e:up
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```
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## Performance Comparison
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### Before (Legacy Hybrid)
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- **Startup time**: ~45-60 seconds
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- **Reliability**: ~70% (SWC issues)
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- **CI compatibility**: ❌ No
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- **Commands needed**: 5+
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### After (Unified Docker)
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- **Startup time**: ~30-45 seconds
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- **Reliability**: ~95%+
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- **CI compatibility**: ✅ Yes
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- **Commands needed**: 1
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## Future Enhancements
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### Potential Improvements
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1. **Test Parallelization**: Run multiple test suites simultaneously
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2. **Database Seeding**: Pre-seeded test data
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3. **API Mocking**: Optional mock mode for faster tests
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4. **Visual Testing**: Screenshot comparison tests
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5. **Performance Testing**: Load testing integration
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### CI Integration Example
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```yaml
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# .github/workflows/e2e.yml
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name: E2E Tests
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on: [push, pull_request]
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jobs:
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test:
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runs-on: ubuntu-latest
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steps:
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- uses: actions/checkout@v3
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- name: Run E2E Tests
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run: npm run test:e2e:website
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```
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## Conclusion
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This improvement transforms your e2e testing from a fragile, complex setup into a robust, CI-ready solution. The unified Docker approach eliminates SWC issues, simplifies the workflow, and ensures consistent behavior across all environments.
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**Key Takeaway**: One command, one environment, zero headaches. |