What problem does it solve? Writing and maintaining tests is often skipped or done inconsistently, leaving codebases with untested edge cases, low coverage, and fragile logic. This Skill enforces a disciplined Test Driven Development workflow by generating test cases, analyzing coverage gaps, and guiding the red-green-refactor cycle. ## Core Features & Use Cases - Test Generation: Convert requirements, user stories, or source code into executable test cases with fixtures, mocks, and proper scaffolding for Jest, Pytest, JUnit, Vitest, Mocha, and RSpec. - Coverage Analysis: Parse LCOV, JSON, and XML coverage reports to identify untested branches and produce prioritized P0/P1/P2 improvement recommendations. - TDD Workflow Guidance: Step-by-step red-green-refactor coaching with checkpoints for test isolation, behavior-focused assertions, and coverage targets. - Use Case: Paste an authentication module and ask for comprehensive tests covering happy paths, error cases, and edge cases, then receive ready-to-run test files plus a quality review. ## Quick Start Ask the agent to generate comprehensive tests for your module by pasting the source code or providing a file path and specifying the target framework.