Implement TDD Enforcement Improvements

[ootakazuhiko]

Summary

Implements comprehensive TDD enforcement improvements as requested in Issue #1, addressing TDD principle violations that occurred during the E2E encrypted chat application development.

🚀 Key Features

1. TDD Guards System

• TDD Guard: Prevents code creation without corresponding tests
• Test Execution Guard: Ensures all tests pass before commits
• RED-GREEN Cycle Guard: Enforces proper TDD cycle adherence
• Coverage Guard: Maintains minimum 80% code coverage

2. Phase Validation Framework

• Phase 3 (Tests): Validates tests exist and are initially RED
• Phase 4 (Code): Ensures tests turn GREEN after implementation
• Phase 5 (Verify): Comprehensive testing and coverage validation
• Phase 6 (Operate): Deployment and operational readiness checks

3. CLI Tool (ae-framework)

ae-framework check --phase 3-tests    # Check phase requirements
ae-framework guard                     # Run TDD guards
ae-framework next                      # Move to next phase
ae-framework tdd                       # Full TDD cycle validation

4. Automated Enforcement

• Pre-commit hooks: Automatic TDD compliance checking
• Git integration: Prevents commits that violate TDD principles
• Metrics collection: Tracks violations and compliance trends

5. Developer Templates

• Standard TDD prompts for consistent development
• Phase-specific workflow templates
• Anti-pattern prevention guidelines

🔧 Technical Implementation

Configuration (ae-framework.yml)

• Declarative phase definitions with validation rules
• Configurable guard enforcement levels (strict/warning)
• Integration settings for Git, IDE, and CI/CD

CLI Architecture

• PhaseValidator: Validates phase requirements and prerequisites
• GuardRunner: Executes TDD compliance checks
• MetricsCollector: Tracks violations and generates reports
• ConfigLoader: Manages framework configuration

Pre-commit Integration

• Automatic test file existence checking
• Test execution validation before commits
• Debug statement detection and cleanup prompts

🎯 Problem Resolution

This implementation directly addresses the TDD violations identified in the E2E chat app development:

Problem	Solution
Code written before tests	TDD Guard blocks source files without tests
Tests not executed	Test Execution Guard prevents commits with failing tests
RED phase skipped	Phase validation ensures tests fail before implementation
Coverage ignored	Coverage Guard enforces 80% minimum threshold
No feedback loops	CLI provides instant validation and next-action guidance

📊 Expected Impact

• Structural Prevention: Makes TDD violations technically difficult to commit
• Developer Guidance: Clear feedback on what needs to be done next
• Compliance Tracking: Metrics to measure and improve TDD adherence
• Consistent Process: Standardized templates reduce human error

🧪 Test Plan

• CLI tool functionality verified
• Guard validation logic implemented
• Phase transition validation tested
• Pre-commit hook integration confirmed
• Configuration loading and defaults tested
• Metrics collection and reporting verified

📚 Documentation

• Updated README.md with TDD enforcement features
• Added TDD workflow documentation
• Included setup and usage instructions
• Created developer prompt templates

🔗 Related Issues

Closes #1 - ae-framework改善提案: TDD原則の強制とフェーズ遵守の仕組み

🚀 Future Enhancements

This foundation enables future improvements:

• IDE extensions for real-time TDD guidance
• CI/CD pipeline integration for automated enforcement
• Advanced metrics and compliance dashboards
• Machine learning-based violation prediction

---

This implementation transforms ae-framework from a structural guideline into an active TDD enforcement system, preventing the violations that occurred in the E2E chat application development and ensuring consistent, high-quality development practices.

🤖 Generated with Claude Code

[Copilot]

Pull Request Overview

This PR implements comprehensive TDD enforcement improvements for the ae-framework, transforming it from a structural guideline into an active enforcement system. The implementation adds automated guards, phase validation, CLI tooling, and pre-commit hooks to prevent TDD principle violations that occurred during previous E2E development.

Key changes include:

• TDD Guards system with automated validation for test-first development compliance
• Phase validation framework ensuring proper RED-GREEN-REFACTOR cycle adherence
• CLI tool (ae-framework) providing real-time validation and workflow guidance
• Pre-commit hooks and Git integration for automated enforcement

Reviewed Changes

Copilot reviewed 11 out of 11 changed files in this pull request and generated 5 comments.

Show a summary per file

File	Description
templates/prompts/tdd-cycle.md	Comprehensive TDD workflow template with phase-specific prompts
src/cli/validators/PhaseValidator.ts	Core validation logic for phase requirements and TDD compliance
src/cli/types.ts	TypeScript type definitions for configuration and validation structures
src/cli/metrics/MetricsCollector.ts	Metrics collection system for tracking TDD violations and compliance
src/cli/index.ts	Main CLI interface with commands for phase checking and guard execution
src/cli/guards/GuardRunner.ts	Guard execution engine for TDD compliance checking
src/cli/config/ConfigLoader.ts	Configuration loading with comprehensive default TDD settings
scripts/hooks/pre-commit	Git pre-commit hook enforcing TDD compliance before commits
package.json	Updated dependencies and build scripts for CLI functionality
ae-framework.yml	Framework configuration with TDD enforcement rules and phase definitions
README.md	Documentation updates highlighting new TDD enforcement features