Test-Driven Development in Practice: Red, Green, Refactor
By Dr. Sarah ChenAugust 12, 20251 min read0 commentsTesting & Quality
# Test-Driven Development in Practice: Red, Green, Refactor
> Practical testing and quality guidance for modern teams.
## Overview
Quality software requires comprehensive testing strategies and automated quality checks.
## Testing Pyramid
- Unit tests (70%): Fast, focused, reliable
- Integration tests (20%): Service boundaries, APIs
- E2E tests (10%): User workflows, critical paths
## Best Practices
- Write tests before code (TDD)
- Keep tests fast and focused
- Use meaningful test names
- Maintain test data separately
## Example
```typescript
describe('UserService', () => {
it('should create user with valid data', async () => {
const userData = { name: 'John', email: 'john@example.com' };
const result = await userService.create(userData);
expect(result.id).toBeDefined();
expect(result.name).toBe(userData.name);
});
});
```
## Resources
- Related: tdd
- Related: testing
- Related: refactoring
- Related: clean-code
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#Tdd#Testing#Refactoring#Clean Code