Mocking the Network with MSW — Isolating the API
This is Part 9 of the “Frontend Testing, Done Right” series. Browse the full series · Glossary The moment a component starts calling an API, tests get shaky. A slow server makes them slow, changed data breaks them, and offline they’re wiped out. MSW (Mock Service Worker) intercepts network requests at the boundary and returns prepared responses, solving the problem at its root. This one article covers installation, handlers, and simulating both success and failure. ...