tdd-stub-first

name	tdd-stub-first
description	Test-Driven Development with Stub-First approach.
tier	1
version	1

TDD & Stub-First Strategy

1. Stubbing Phase

1. Create Structure: Files, classes, methods.
2. Implement Stubs: Use NotImplementedError, return None, or hardcoded values.
3. Docstrings: Add detailed docstrings describing future logic.
4. E2E Test (Stub): Write an E2E test that asserts the hardcoded behavior.
   • Example: asserting discount == 100.0 (stubbed value).

2. Implementation Phase

1. Verify Stubs: Ensure E2E test passes on stubs.
2. Replace Stubs: Implement real logic.
3. Unit Tests: Add unit tests for specific methods and edge cases.
4. Update E2E: Update E2E test to assert real behavior.
   • Example: asserting discount == 150.0 (calculated value).

3. Testing Rules

• No Mocking LLMs: Use recorded responses or separate integration environments.
• Regression: Always run full regression suite.