version: "1.0.2" name: test-implement description: Implements React/TypeScript unit, integration, and browser E2E tests with the repository's configured runner, mocks, setup, and browser harness. Use when creating or completing frontend tests and generated test skeletons.
Test Implementation Patterns
Reference Selection
| Test Type | Reference | When to Use | |
|---|
| Unit / Integration | references/frontend.md | Implementing React component tests with the repository's configured runner and network mocking layer | |
| E2E | references/e2e.md | Implementing browser-level E2E tests in the existing harness, or Playwright when the approved work introduces a harness | |
Common Principles
AAA Structure
All tests follow Arrange-Act-Assert:
- Arrange: Set up preconditions and inputs
- Act: Execute the behavior under test
- Assert: Verify the expected outcome
Test Independence
- Each test runs independently without depending on other tests
- No shared mutable state between tests
- Deterministic execution — mock random and time dependencies
Naming
- Test names describe expected behavior from user perspective
- One test verifies one behavior