Want to sleep better at night? Follow the 3-2-1 rule. 😴
3 Types of Tests: 🟢 Unit Tests (70%) Fast, isolated, test individual functions. Your safety net for refactoring.
🟡 Integration Tests (20%) Test how your components work together. Catch the "it works on my machine" bugs.
🔴 End-to-End Tests (10%) Test complete user journeys. Slow but simulate real user behavior.
2 Environments Before Production: 🔧 Staging: Production-like environment for final testing 🧪 Development: Where you break things safely
1 Simple Deployment Rule: Never deploy on Friday. Or Monday. Or any day ending in 'y'. 😅
(Kidding about the last part, but seriously... Friday deployments are a special kind of chaos.)
Bonus Tips: • Write tests first (TDD) or immediately after (TLD - Test Last Development) • Test the unhappy path more than the happy path • Mock external dependencies in unit tests • Use feature flags for gradual rollouts
Reality Check: Perfect test coverage is a myth. Focus on testing critical business logic and edge cases that would cause customer-facing issues.
Your bug count will thank you.
What's your testing strategy? Do you follow this pyramid? 📐