test-runner Write and run tests across languages and frameworks. Framework Selection | Language | Unit Tests | Integration | E2E | |----------|-----------|-------------|-----| | TypeScript/JS | Vitest (preferred), Jest | Supertest | Playwright | | Python | pytest | pytest + httpx | Playwright | | Swift | XCTest | XCTest | XCUITest | Quick Start by Framework Vitest (TypeScript / JavaScript) Jest pytest (Python) XCTest (Swift) Playwright (E2E) TDD Workflow 1. Red — Write a failing test that describes the desired behavior. 2. Green — Write the minimum code to make the test pass. 3. Refactor — Cl…