| id | structure-behavior-design.skill.tdd-construction |
| kind | skill |
| name | structure-behavior-design-tdd-construction |
| description | Internal Structure-Behavior Design skill for TDD construction using Red-Green-Refactor.
Use only as part of the Structure-Behavior Design workflow.
|
| tags | ["structure-behavior-design","internal"] |
| tools | {"claude":{"enabled":true,"frontmatter":{"user-invocable":false}}} |
TDD Construction
Goal
Implement behavior through Red-Green-Refactor.
Do not write production code before specifying the behavior with a failing test.
Loop
For each behavior:
Red
- Write one failing behavior test.
- The test should fail for the expected reason.
- Do not write production code first.
Green
- Write the smallest production code needed to pass.
- Do not generalize early.
- Do not introduce extra abstractions.
- Keep the change focused.
Refactor
- Improve names.
- Remove duplication.
- Move behavior to the object/module that owns it.
- Improve responsibility placement.
- Keep all tests passing.
- Do not change observable behavior.
Avoid
- implementing multiple behaviors before tests
- writing broad abstractions before the second concrete need
- skipping refactoring after Green
- leaving behavior in handlers/use cases when a concept should own it
- making tests pass by weakening assertions
Required output
TDD Plan
| Behavior | Red Test | Green Implementation | Refactor Target |
|---|
Construction Log
Behavior 1
- Red:
- Green:
- Refactor:
- Tests run:
