// test/setup-env.js // add this to your setupFilesAfterEnv config in jest so it's imported for every test file import { server } from './server'; beforeAll(() => server.listen()); // if you need to add a handler after calling setupServer for some specific test // this will remove that handler for the rest of them // (which is important for test isolation): afterEach(() => server.resetHandlers()); afterAll(() => server.close());