QA Jest Writer

Purpose

Write Jest unit and integration tests from test case specifications (Phase 2 output). Transform structured test cases into executable TypeScript/JavaScript tests using Jest's describe/it patterns, mocking, snapshots, and coverage tooling.

Trigger Phrases

• "Write Jest tests for [module/function]"
• "Generate Jest unit tests from test cases"
• "Create Jest integration tests for [service]"
• "Add Jest tests with mocks for [dependency]"
• "Jest snapshot tests for [component]"
• "Jest test coverage for [file]"
• "Parameterized Jest tests for [function]"
• "Jest async tests for [API handler]"

Test Types