Test first
Use Claude Code like a Director, not a Programmer. MIT toolkit with Auto-Loop, guided setup, 27 commands, 14 agents, and 32 skills.
npx -y skills add claude-world/director-mode-lite --skill test-firstAssembled from the repository path, not quoted from the project. Check it against their README if it does not work.
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Drive one feature through a strict TDD Red-Green-Refactor cycle with checklists for each phase. Use when implementing new functionality test-first, or when the user runs /test-first.
SKILL.md
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Test-Driven Development
Implement TDD for: $ARGUMENTS
Quick Steps
- Write a failing test
- Run test, confirm failure
- Write minimal code to pass
- Refactor while keeping tests green
- Repeat
Red Phase - Write Failing Test
Test Design Principles
- Test one specific behavior
- Test name describes expected result
- Test should fail (feature doesn't exist yet)
Must Test
- Normal case
- Edge cases
- Error cases
- Invalid input
Example
// auth/login.test.ts
it('should return JWT token for valid credentials', async () => {
const res = await request(app)
.post('/auth/login')
.send({ email: '[email protected]', password: 'password123' })
expect(res.status).toBe(200)
expect(res.body.token).toBeDefined()
})
Green Phase - Minimal Implementation
Implementation Principles
- Write ONLY enough code to pass the test
- Don't optimize yet
- Don't worry about elegance
- Just make it work
Refactor Phase - Clean Up
Refactoring Checklist
- Is there code duplication?
- Are variable names clear?
- Are functions too long?
- Is the logic too complex?
Refactoring Rules
- Keep tests passing
- Change one thing at a time
- Run tests frequently
Test Quality Checklist
- Unit tests cover core logic
- Integration tests cover interactions
- Test names clearly describe intent
- Tests are independent and repeatable
- Tests run fast (unit tests < 100ms)
- Edge cases are covered
Follow TDD strictly. No shortcuts.