Unit & Integration Test Generator

A generated test suite is only worth anything if its tests can actually fail for a real reason. This skill writes those — not coverage-padding stubs that mirror the implementation and break on every refactor. It runs an ordered pass: • Understands the target — inputs, outputs, side effects, dependencies, error conditions, the contract • Detects your framework and conventions — pytest, unittest, Jest, Vitest, JUnit, Go testing, RSpec — and matches your repo's style • Enumerates the cases first — happy path, edge/boundary, error paths, side effects, integration points (shown as a test plan) • Writes clear arrange-act-assert tests — descriptive, isolated, deterministic, with external dependencies mocked properly • Covers the failure modes — the untested error handling where real bugs hide • Adds integration tests where they earn their place • Makes them runnable, with the command to run them You get the test file(s) in your framework plus a coverage summary, including any cases that need domain knowledge it can't infer (flagged, not guessed). It writes tests — it doesn't judge whether an existing suite is adequate; pair it with a test-coverage gate for that.