TDD Workflow

[TDD MODE ACTIVATED]

Objective

Implement features using Test-Driven Development methodology: write tests first, then implement to make them pass.

TDD Cycle

1. RED - Write a failing test
2. GREEN - Write minimal code to pass the test
3. REFACTOR - Improve code while keeping tests green
4. REPEAT - Continue until feature is complete

Test Types Written

• Unit Tests - Individual functions in isolation
• Integration Tests - API endpoints, database operations
• E2E Tests - Critical user flows (for important features)

Coverage Target

• Minimum 80% code coverage
• All public functions tested
• Edge cases covered (null, empty, invalid inputs)
• Error paths tested (not just happy path)

Invocation

This command delegates to the tdd-guide agent (Sonnet model) which will:

1. Understand the feature requirements
2. Write failing tests first
3. Implement code to pass tests
4. Verify 80%+ coverage
5. Document test coverage

When to Use

• Starting a new feature
• Fixing a bug (write test that reproduces bug first)
• Refactoring existing code (ensure tests exist first)

Output

Tests and implementation with:

• Test file(s) created
• Implementation code
• Coverage report showing 80%+
• All tests passing