Test Generation Skill

Test generation automatically creates unit tests, integration tests, and edge cases for existing codebases. Analyze your code structure and the Skill produces ready-to-run test templates that systematically identify coverage gaps and fill them—boosting coverage from 42% to 87% or higher without manual test writing.

Yes. This Skill supports TypeScript with Vitest for frontend components, creating unit tests and component integration tests that follow AAA patterns and mocking best practices, ready to run immediately in your testing pipeline.

Test generation handles legacy codebases and refactored services across frontend, backend, and multi-language environments. It validates refactors, increases coverage on under-tested code, and adds tests for new features with comprehensive edge case and error handling coverage.

The Skill supports TypeScript projects with Vitest and Python services with pytest, implementing standard fixtures, mocking, and AAA test patterns. It emits coverage metrics and test-plan artifacts alongside generated test suites.

Coverage gains depend on your starting point and codebase size. A legacy codebase at 42% coverage can reach 87% by generating 156 targeted tests covering unit scenarios, integration paths, error conditions, and edge cases identified through code analysis.

Provide existing source code in a supported language (TypeScript or Python) and specify your testing framework (Vitest or pytest). The Skill analyzes structure, dependencies, and business logic, then outputs test templates and coverage reports without requiring test fixtures to be pre-written.