How-to articles

Practical guides for common testing scenarios.

• Async functions with fake timers — Speed up tests that depend on timers
• Link seams (CommonJS) — Isolate your system under test with proxyquire
• Stub a dependency — Stub a dependency of a CommonJS module
• Stub ES module imports — Make ES module namespaces mutable for stubbing
• TypeScript and SWC — A detailed case study on real world dependency stubbing