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name: tdd-cycle description: Red-Green-Refactor test-driven development cycle version: 1.0.0 author: Agentic OS tags: [testing, tdd, quality, development]

TDD Cycle

Description

Enforces the Red-Green-Refactor TDD cycle: write a failing test, make it pass, then refactor. No code is written before a test exists.

When to Use

• When implementing any new feature
• When fixing a bug
• When refactoring existing code

Process

1. RED: Write a failing test for the desired behavior
2. Verify test fails (confirm test is valid)
3. GREEN: Write minimal code to make the test pass
4. Verify test passes
5. REFACTOR: Clean up code while keeping tests green
6. Commit with message format: RED|GREEN|REFACTOR: description

Rules

• Production code is only written to make a failing test pass
• Delete any code written before tests
• Never skip the RED phase

Agent Assignment

• Primary: opencode