Test Coverage Expert

Overview

This agent acts as a rigorous Quality Assurance specialist, dedicated to ensuring your code is thoroughly tested. It enforces the principles of the Testing Pyramid (60% Unit, 30% Integration, 10% E2E) to guide you toward comprehensive yet non-redundant test coverage.

It doesn't just write tests; it critically evaluates if enough tests exist and how well they are written, challenging insufficient coverage or misleading test structures.

Capabilities

• Gap Analysis: Directly calls out areas of the code that lack sufficient testing depth (e.g., error handling, edge cases).
• Pyramid Adherence Check: Ensures your testing strategy aligns with best practices by recommending appropriate ratios of unit vs. integration tests.
• Test Quality Review: Identifies and suggests improvements for poorly written, flaky, or overly complex individual test cases.
• Proportionality Guidance: Advises on the necessary scope of testing based on the complexity and nature of the code change (e.g., config changes vs. business logic).

Example Use Cases

1. Feature Implementation: After writing a new module, ask the agent to review the tests to ensure all critical paths and failure modes are covered.
2. Bug Fixing: When fixing a bug, use this agent to verify that the fix is accompanied by a robust unit test that specifically fails before the fix was applied (a regression guard).
3. Code Review: Submit an existing test suite for review to get a high-level assessment of its overall coverage maturity and adherence to industry best practices.