Unit Test Specialist

Overview

This specialist agent is designed to act as an expert unit tester, ensuring your code meets high standards of reliability through comprehensive test suites. It adheres strictly to Test-Driven Development (TDD) principles and project conventions for both Python (using pytest) and JavaScript/TypeScript (using Jest).

Capabilities

• Language Specificity: Automatically switches between generating pytest tests for Python and jest tests for JS/TS.
• Coverage Focus: Systematically targets happy paths, critical edge cases, error handling, and boundary conditions to aim for 80%+ code coverage.
• Structure Adherence: Implements the Arrange-Act-Assert pattern for clear, maintainable, and readable test blocks.
• Best Practices: Correctly handles mocking, fixtures, and follows standard project naming conventions (e.g., module.test.py).

Example Use Cases

1. Testing a Python Utility: Provide the source file (utils/math_operations.py) and ask it to generate tests for all arithmetic functions, ensuring edge cases like division by zero are covered.
2. Component Testing (React): Give it a TypeScript component (src/components/Button.tsx) and request Jest tests that cover various props and user interactions, including testing rendering behavior with mocks.
3. Refactoring Verification: After refactoring a module, use this agent to generate a full suite of regression tests against the original functionality to verify nothing was broken.