neo773
57 lines
1.5 KiB
TypeScript
57 lines
1.5 KiB
TypeScript
import { http, HttpResponse, passthrough, type RequestHandler } from 'msw';
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import { setupServer } from 'msw/node';
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const localhostPassthroughHandlers = [
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http.all('http://127.0.0.1*', () => passthrough()),
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http.all('http://localhost*', () => passthrough()),
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];
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// With onUnhandledRequest: 'error', msw throws an uncaught InternalError inside
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// the interceptor and the pending request never settles, which hangs the caller
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// forever (jest swallows the exception). Responding 500 instead makes the caller
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// fail immediately with an attributable error.
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const unmockedRequestCatchAllHandler = http.all('*', ({ request }) => {
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const message = `Unmocked external request in integration test: ${request.method} ${request.url}`;
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console.error(message);
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return HttpResponse.json({ error: { message } }, { status: 500 });
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});
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const server = setupServer(
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...localhostPassthroughHandlers,
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unmockedRequestCatchAllHandler,
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);
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export type MswHandler = RequestHandler;
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export type HttpMock = {
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use: (...handlers: MswHandler[]) => void;
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};
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export const setupHttpMock = (...baseHandlers: MswHandler[]): HttpMock => {
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const applyBaseHandlers = () => {
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if (baseHandlers.length > 0) {
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server.use(...baseHandlers);
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}
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};
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beforeAll(() => {
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server.listen({ onUnhandledRequest: 'error' });
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applyBaseHandlers();
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});
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afterEach(() => {
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server.resetHandlers();
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applyBaseHandlers();
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});
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afterAll(() => {
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server.close();
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});
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return {
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use: (...handlers: MswHandler[]) => server.use(...handlers),
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};
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};
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