| name | tdd |
| allowed-tools | Bash(ls:*), Bash(cd:*), Bash(cat:*), Bash(ast-grep:*), Bash(find:*), Read, Glob, Grep, LSP, Write |
| description | Implement features using Kent Beck's Test-Driven Development (TDD) methodology. Use this skill when the user asks to write code via TDD, follow the Red-Green-Refactor cycle, or build a feature test-first. Guides the workflow of building a test list, writing one failing test at a time, making it pass with minimal production code, and refactoring before moving to the next test.
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Implement using Kent Beck's TDD.
Procedure
- Identify the test scenarios that should be covered and compile them into a list (the test list).
- Pick "only one" item from the test list, translate it into actual, concrete, executable test code, and confirm that the test fails.
- Change the production code so that the test you just wrote (and all tests written so far) passes. Add anything you notice during this process to the test list.
- Refactor as needed to improve the implementation design.
- Return to step 2 and repeat until the test list is empty.
Steps 2 through 4 are also called the "Red-Green-Refactor cycle."
Note: Red-Green-Refactor Cycle:
- RED: Write a test and confirm that it fails.
- GREEN: Make the minimal implementation needed for the test to pass.
- REFACTOR: Improve the code and confirm that the tests still pass.
