moai-workflow-tdd

# Test-Driven Development (TDD) Workflow ## Development Mode Configuration (CRITICAL) [NOTE] This workflow is selected based on `.moai/config/sections/quality.yaml`: ```yaml constitution: development_mode: tdd # or ddd ``` **When to use this workflow**: - `development_mode: tdd` → Use TDD (this workflow, default) - `development_mode: ddd` → Use DDD instead (moai-workflow-ddd) **Key distinction**: - **TDD** (default): Test-first development for all work, including brownfield projects with pre-RED analysis - **DDD**: Characterization-test-first for existing codebases with minimal test coverage ## Quick Reference Test-Driven Development provides a disciplined approach for creating new functionality where tests define the expected behavior before implementation. Core Cycle - RED-GREEN-REFACTOR: - RED: Write a failing test that defines desired behavior - GREEN: Write minimal code to make the test pass - REFACTOR: Improve code structure while keeping tests green When to Use TDD: - Creating new functionality from scratch - Building isolated modules with no existing dependencies - When behavior specification drives development - New API endpoints with clear contracts - New UI components with defined behavior - Greenfield projects (rare - usually Hybrid is better) When NOT to Use TDD: - Refactoring existing code (use DDD instead) - When behavior preservation is the primary goal - Legacy codebase without test coverage (use DDD first) - When modifying existing files (c...