chayen-testing

Plan, write, or fix automated tests with xUnit, NUnit, MSTest, Jasmine, Jest, Vitest, Playwright, Cypress, or pytest, covering test strategy, unit, integration, end-to-end, API and contract, regression, property-based, mutation, and fuzz tests, test data builders, coverage gaps, and failing or flaky test triage. Not for manual QA plans, load testing, or production monitoring.