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---
name: test_driven_agent
description: An advanced testing protocol that enforces TDD (Test Driven Development) and self-healing tests.
allowed-tools: Bash, Read, Edit, Write
---
# Test Driven Agent Protocol
## 1. The Red-Green-Refactor Cycle
1. **Red**: Write a test that fails (demonstrating the bug or missing feature).
- *Agent Note*: If fixing a bug, YOU MUST reproduce it with a test first.
2. **Green**: Write the minimal code to pass the test.
3. **Refactor**: Clean up the code while ensuring tests still pass.
## 2. Test Coverage Requirements
- **Happy Path**: The "standard" usage case.
- **Sad Path**: Error states, network failures, invalid inputs.
- **Edge Cases**: Empty lists, max values, concurrent actions.
## 3. Self-Healing Mandate
If a test fails after your changes:
- **DO NOT** delete the test.
- **DO NOT** comment out the assertion.
- **DO NOT** change the test expectation to match the buggy result (unless the spec changed).
- **DO**: Fix the implementation logic until the test passes.
## 4. Integration vs Unit
- **Unit**: Mock external dependencies (Supabase, API). Fast, isolated.
- **Integration**: Test the hook or service with realistic (mocked) data flows.
## 5. Verification Checklist
- [ ] Did I write a test case for this requirement?
- [ ] Did I run `npm test <filename>`?
- [ ] Did I check specifically for regression in related headers/components?
