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name: gsd-tdd description: Implements test-driven development with RED-GREEN-REFACTOR cycles. Use when implementing business logic, API endpoints, data transformations, or any code with defined I/O contracts. version: 1.0.0 author: get-shit-done (migrated for Qwen) triggers:

• "use TDD"
• "test-driven development"
• "write tests first"
• "RED-GREEN-REFACTOR"
• "implement with tests" tools:
• read_file
• write_file
• bash models:
• qwen3-coder
• qwen3-32b

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GSD TDD Skill

Overview

This skill implements test-driven development with disciplined RED-GREEN-REFACTOR cycles.

TDD Detection Heuristic

Question: Can you write expect(fn(input)).toBe(output) before writing fn?

• Yes: TDD candidate - use this skill
• No: Standard implementation

TDD Candidates:

• Business logic with defined I/O
• API endpoints with request/response contracts
• Data transformations
• Validation rules
• Algorithms
• State machines

RED-GREEN-REFACTOR Cycle

RED: Write Failing Test

1. Read behavior specification
2. Create test file
3. Write failing test
4. Run test (MUST fail)
5. Commit: test: add failing test for [feature]

GREEN: Make It Pass

1. Read implementation requirements
2. Write minimal code to pass
3. Run test (MUST pass)
4. Commit: feat: implement [feature]

REFACTOR: Clean Up (If Needed)

1. Identify improvements
2. Clean up code
3. Run tests (MUST still pass)
4. Commit only if changes: refactor: clean up [feature]

Test Infrastructure Detection

First TDD Task: Detect and setup test infrastructure

1. Detect project type (Node, Python, etc.)
2. Identify test framework (Jest, pytest, etc.)
3. Install if needed
4. Create test configuration
5. Write sample test to verify