# BMAD TDD Demo - Calculator Project

This is a complete working demonstration of the BMAD TDD Methodology Expansion Pack using a simple calculator project.

## 🎯 Project Overview

**Purpose:** Demonstrate a complete Red-Green-Refactor TDD cycle using BMAD methodology  
**Result:** ✅ Successfully implemented with 100% test coverage  
**Rating:** 9.5/10 framework integration score

## 📊 Results Summary

- **21 test cases** covering all acceptance criteria
- **100% code coverage** (exceeds 90% target)
- **Complete TDD cycle** from Red → Green → Refactor
- **Full documentation** of TDD progression in story file
- **Performance requirements met** (< 1ms per operation)

## 🗂️ Project Structure

```
├── src/
│   └── calculator.js          # Implementation (post-refactor)
├── tests/
│   └── calculator.test.js     # Comprehensive test suite
├── stories/
│   └── 1.1-calculator-basic-operations.md  # Complete story with TDD progression
├── package.json               # Jest configuration and dependencies
└── TDD_EVALUATION_REPORT.md   # Detailed evaluation findings
```

## 🚀 Quick Start

1. **Install dependencies:**

   ```bash
   npm install
   ```

2. **Run tests:**

   ```bash
   npm test
   ```

3. **Check coverage:**
   ```bash
   npm run test:coverage
   ```

## 📋 Story Progression

The complete TDD cycle is documented in the story file:

### ✅ Red Phase

- 21 failing tests written first
- Clear Given-When-Then structure
- Proper test isolation and mocking strategy
- Tests fail for correct reasons (no implementation)

### ✅ Green Phase

- Minimal implementation to make tests pass
- All acceptance criteria satisfied
- 100% test coverage achieved
- Performance requirements met

### ✅ Refactor Phase

- Code quality improvements while maintaining green tests
- Extracted helper methods and constants
- Improved readability and maintainability
- Zero functionality changes

## 🧪 Test Quality

- **Deterministic:** No random values or external dependencies
- **Isolated:** Each test runs independently
- **Fast:** All tests complete in < 200ms total
- **Readable:** Clear test names and Given-When-Then structure
- **Comprehensive:** Edge cases and error conditions covered

## 📖 Key BMAD TDD Features Demonstrated

1. **Story Template Integration** - TDD metadata seamlessly integrated
2. **Agent Workflow** - QA agent Red phase, Dev agent Green phase
3. **Quality Gates** - Phase-specific validation and progression
4. **Documentation** - Complete traceability through story file
5. **Commands** - TDD commands integrated with BMAD workflow

## 🎯 Evaluation Highlights

- **Integration:** 10/10 - Seamless with existing BMAD framework
- **Documentation:** 10/10 - Excellent story progression tracking
- **TDD Process:** 10/10 - Complete Red-Green-Refactor cycle
- **Code Quality:** 9/10 - Clean, maintainable, well-tested code
- **Framework Value:** 9/10 - Significant enhancement to BMAD

## 📚 Learn More

- See `TDD_EVALUATION_REPORT.md` for detailed evaluation findings
- Review `stories/1.1-calculator-basic-operations.md` for complete TDD progression
- Check the expansion pack documentation in `../../expansion-packs/tdd-methodology/`

---

**Status:** Production Ready ✅  
**Framework:** BMAD-METHOD™ TDD Expansion Pack  
**Evaluation:** Complete with 9.5/10 rating