# FizzBuzz Kata - Live Demo

## Purpose

This kata is designed for **live demonstration** during the TDD workshop introduction. It shows the RED-GREEN-REFACTOR cycle in a familiar problem that requires minimal explanation.

## The Rules

Write a function that converts numbers to strings according to these rules:

- Numbers divisible by 3 → `"Fizz"`
- Numbers divisible by 5 → `"Buzz"`
- Numbers divisible by both 3 and 5 → `"FizzBuzz"`
- All other numbers → the number as a string (e.g., `"1"`, `"2"`)

## Git History as Teaching Tool

This kata is built with **12 commits** showing each step of the TDD cycle:

```bash
git log --oneline --all
```

Each commit shows either:
- **RED**: A failing test
- **GREEN**: Minimal code to pass
- **REFACTOR**: Code cleanup (if needed)

## Using This for the Demo

See `DEMO_SCRIPT.md` for detailed talking points and timing guide.

## Running the Tests

```bash
dart pub get
dart test
```

## Checking Out Individual Steps

To see the code at any point:

```bash
git log --oneline                    # See all commits
git checkout <commit-hash>           # Jump to that step
git checkout main                    # Return to final solution
```

## The "Aha!" Moment

Notice how the simple tests (1, 2) led to a general solution (n.toString()), and the Fizz/Buzz tests forced the algorithm to emerge naturally. **We never designed the whole solution upfront—the tests revealed it step by step.**

## For Facilitators

This is your warm-up kata. Practice it a few times before the workshop so you can live-code it smoothly while talking through your thinking process.