chore: use vitest for tests (#1817)

.github/ISSUE_TEMPLATE/02-issue-nodejs.yml

@@ -1,5 +1,5 @@
 name: 'Bug report (Node.js)'
-description: I experience unexpected behavior using the library in Node.js (Jest/React Native/Express/etc.).
+description: I experience unexpected behavior using the library in Node.js (Vitest/React Native/Express/etc.).
 labels: ['bug', 'scope:node', 'needs:triage']
 body:
   - type: markdown

CONTRIBUTING.md

@@ -7,7 +7,7 @@ Hey! Thank you for deciding to contribute to Mock Service Worker! This page will
 Getting yourself familiar with the tools below will substantially ease your contribution experience.
 
 - [TypeScript](https://www.typescriptlang.org/)
-- [Jest](https://jestjs.io/)
+- [Vitest](https://vitest.dev/)
 - [Playwright](https://playwright.dev/)
 
 ## Dependencies
@@ -74,8 +74,6 @@ Build the library with the following command:
 $ pnpm build
 ```
 
-[jest-url]: https://jestjs.io
-
 ## Tests
 
 ### Testing levels
@@ -269,6 +267,5 @@ $ pnpm build
 ```
 
 [pnpm-url]: https://pnpm.io/
-[jest-url]: https://jestjs.io
 [page-with-url]: https://github.com/kettanaito/page-with
 [pnpm-install-guide-url]: https://pnpm.io/7.x/installation#installing-a-specific-version

README.md

@@ -125,7 +125,7 @@ There's no such thing as Service Workers in Node.js. Instead, MSW implements a [
 
 ### Usage example
 
-Take a look at the example of an integration test in Jest that uses [React Testing Library](https://github.com/testing-library/react-testing-library) and Mock Service Worker:
+Take a look at the example of an integration test in Vitest that uses [React Testing Library](https://github.com/testing-library/react-testing-library) and Mock Service Worker:
 
 ```js
 // test/Dashboard.test.js

global.d.ts

@@ -1,5 +1,3 @@
-declare const SERVICE_WORKER_CHECKSUM: string
-
 declare module '@bundled-es-modules/cookie' {
   export * as default from 'cookie'
 }

jest.config.js

@@ -1,13 +0,0 @@
-module.exports = {
-  bail: true,
-  roots: ['<rootDir>/src', '<rootDir>/cli'],
-  transform: {
-    '^.+\\.tsx?$': '@swc/jest',
-  },
-  testRegex: '(/__tests__/.*|(\\.|/)(test|spec))\\.(j|t)sx?$',
-  moduleFileExtensions: ['ts', 'tsx', 'js', 'jsx', 'json'],
-  setupFiles: ['./jest.setup.js'],
-  moduleNameMapper: {
-    '^~/core(/.*)?$': '<rootDir>/src/core/$1',
-  },
-}

jest.setup.js

@@ -1,31 +0,0 @@
-const { TextEncoder, TextDecoder } = require('util')
-
-/**
- * @note Temporary global polyfills for Jest because it's
- * ignoring Node.js defaults.
- */
-Object.defineProperties(globalThis, {
-  TextDecoder: { value: TextDecoder },
-  TextEncoder: { value: TextEncoder },
-})
-
-const { Blob } = require('buffer')
-const { Request, Response, Headers, File, FormData } = require('undici')
-
-Object.defineProperties(globalThis, {
-  Headers: { value: Headers },
-  Request: { value: Request },
-  Response: { value: Response },
-  File: { value: File },
-  Blob: { value: Blob },
-  FormData: { value: FormData },
-})
-
-if (typeof window !== 'undefined') {
-  Object.defineProperty(navigator || {}, 'serviceWorker', {
-    writable: false,
-    value: {
-      addEventListener: () => null,
-    },
-  })
-}

package.json

@@ -46,15 +46,14 @@
     "start": "tsup --watch",
     "clean": "rimraf ./lib",
     "lint": "eslint \"{cli,config,src,test}/**/*.ts\"",
-    "prebuild": "rimraf ./lib",
     "build": "pnpm clean && cross-env NODE_ENV=production tsup && pnpm patch:dts",
     "patch:dts": "node \"./config/scripts/patch-ts.js\"",
     "check:exports": "node \"./config/scripts/validate-esm.js\"",
     "test": "pnpm test:unit && pnpm test:node && pnpm test:browser",
-    "test:unit": "cross-env BABEL_ENV=test jest --maxWorkers=3",
-    "test:node": "jest --config=./test/jest.config.js --forceExit",
+    "test:unit": "vitest",
+    "test:node": "vitest run --config=./test/node/vitest.config.ts",
     "test:browser": "playwright test -c ./test/browser/playwright.config.ts",
-    "test:modules:node": "jest --config=./test/modules/node/jest.config.js",
+    "test:modules:node": "vitest run --config=./test/modules/node/vitest.config.ts",
     "test:modules:browser": "playwright test -c ./test/modules/browser/playwright.config.ts",
     "test:ts": "ts-node test/typings/run.ts",
     "prepare": "pnpm simple-git-hooks init",
@@ -143,11 +142,9 @@
     "@ossjs/release": "^0.8.0",
     "@playwright/test": "^1.30.0",
     "@swc/core": "^1.3.35",
-    "@swc/jest": "^0.2.24",
     "@types/express": "^4.17.17",
     "@types/fs-extra": "^9.0.13",
     "@types/glob": "^8.1.0",
-    "@types/jest": "^29.4.0",
     "@types/json-bigint": "^1.0.1",
     "@types/node": "18.x",
     "@types/node-fetch": "^2.5.11",
@@ -170,8 +167,7 @@
     "fs-extra": "^10.0.0",
     "fs-teardown": "^0.3.0",
     "glob": "^9.3.4",
-    "jest": "^29.4.3",
-    "jest-environment-jsdom": "^29.4.3",
+    "jsdom": "^22.1.0",
     "json-bigint": "^1.0.0",
     "lint-staged": "^13.0.3",
     "page-with": "^0.6.1",
@@ -184,6 +180,7 @@
     "typescript": "^5.0.2",
     "undici": "^5.20.0",
     "url-loader": "^4.1.1",
+    "vitest": "^0.34.6",
     "webpack": "^5.68.0",
     "webpack-dev-server": "^3.11.2",
     "webpack-http-server": "^0.5.0"

src/browser/global.browser.d.ts

@@ -0,0 +1 @@
+declare const SERVICE_WORKER_CHECKSUM: string

src/browser/setupWorker/setupWorker.node.test.ts

@@ -1,5 +1,5 @@
 /**
- * @jest-environment node
+ * @vitest-environment node
  */
 import { setupWorker } from './setupWorker'
 

src/browser/setupWorker/start/utils/prepareStartHandler.test.ts

@@ -33,7 +33,7 @@ describe('resolveStartOptions', () => {
 
 describe('prepareStartHandler', () => {
   test('exposes resolved start options to the generated star handler', () => {
-    const createStartHandler = jest.fn()
+    const createStartHandler = vi.fn()
     const context: SetupWorkerInternalContext = {} as any
     const startHandler = prepareStartHandler(createStartHandler, context)
     expect(startHandler).toBeInstanceOf(Function)

src/browser/setupWorker/start/utils/printStartMessage.test.ts

@@ -1,12 +1,12 @@
 import { printStartMessage } from './printStartMessage'
 
 beforeEach(() => {
-  jest.spyOn(console, 'groupCollapsed').mockImplementation()
-  jest.spyOn(console, 'log').mockImplementation()
+  vi.spyOn(console, 'groupCollapsed').mockImplementation(() => void 0)
+  vi.spyOn(console, 'log').mockImplementation(() => void 0)
 })
 
 afterEach(() => {
-  jest.restoreAllMocks()
+  vi.restoreAllMocks()
 })
 
 test('prints out a default start message into console', () => {

src/browser/setupWorker/stop/utils/printStopMessage.test.ts

@@ -1,15 +1,15 @@
 import { printStopMessage } from './printStopMessage'
 
 beforeAll(() => {
-  jest.spyOn(global.console, 'log').mockImplementation()
+  vi.spyOn(global.console, 'log').mockImplementation(() => void 0)
 })
 
 afterEach(() => {
-  jest.resetAllMocks()
+  vi.resetAllMocks()
 })
 
 afterAll(() => {
-  jest.restoreAllMocks()
+  vi.restoreAllMocks()
 })
 
 test('prints a stop message to the console', () => {

src/browser/tsconfig.browser.build.json

@@ -0,0 +1,6 @@
+{
+  "extends": "./tsconfig.browser.json",
+  "compilerOptions": {
+    "composite": false
+  }
+}

src/browser/tsconfig.browser.json

@@ -0,0 +1,9 @@
+{
+  "extends": "../tsconfig.src.json",
+  "compilerOptions": {
+    // Expose browser-specific libraries only for the
+    // source code under the "src/browser" directory.
+    "lib": ["DOM", "WebWorker"]
+  },
+  "include": ["../../global.d.ts", "./global.browser.d.ts", "./**/*.ts"]
+}

src/browser/tsconfig.json

@@ -1,7 +0,0 @@
-{
-  "extends": "../../tsconfig.json",
-  "compilerOptions": {
-    "lib": ["dom", "WebWorker"]
-  },
-  "include": ["./**/*.ts"]
-}

src/browser/utils/deferNetworkRequestsUntil.test.ts

@@ -1,12 +1,12 @@
 /**
- * @jest-environment jsdom
+ * @vitest-environment jsdom
  */
 import { deferNetworkRequestsUntil } from './deferNetworkRequestsUntil'
 
 beforeAll(() => {
   // Stubs native `fetch` function to remove any external
   // asynchronicity from this test suite.
-  window.fetch = jest.fn().mockImplementation(() => {
+  window.fetch = vi.fn().mockImplementation(() => {
     return Promise.resolve({
       json: () => ({
         response: 'body',
@@ -16,7 +16,7 @@ beforeAll(() => {
 })
 
 afterAll(() => {
-  jest.restoreAllMocks()
+  vi.restoreAllMocks()
 })
 
 test('defers any requests that happen while a given promise is pending', async () => {

src/browser/utils/getAbsoluteWorkerUrl.test.ts

@@ -1,5 +1,5 @@
 /**
- * @jest-environment jsdom
+ * @vitest-environment jsdom
  */
 import { getAbsoluteWorkerUrl } from './getAbsoluteWorkerUrl'
 

src/browser/utils/pruneGetRequestBody.test.ts

@@ -1,5 +1,5 @@
 /**
- * @jest-environment jsdom
+ * @vitest-environment jsdom
  */
 import { TextEncoder } from 'util'
 import { pruneGetRequestBody } from './pruneGetRequestBody'

src/core/HttpResponse.test.ts

@@ -1,5 +1,5 @@
 /**
- * @jest-environment node
+ * @vitest-environment node
  */
 import { TextEncoder } from 'util'
 import { HttpResponse } from './HttpResponse'

src/core/bypass.test.ts

@@ -1,5 +1,5 @@
 /**
- * @jest-environment jsdom
+ * @vitest-environment jsdom
  */
 import { bypass } from './bypass'
 

src/core/handlers/GraphQLHandler.test.ts

@@ -1,5 +1,5 @@
 /**
- * @jest-environment jsdom
+ * @vitest-environment jsdom
  */
 import { encodeBuffer } from '@mswjs/interceptors'
 import { OperationTypeNode, parse } from 'graphql'
@@ -583,7 +583,7 @@ describe('isDocumentNode', () => {
 
 describe('request', () => {
   it('has parsed operationName', async () => {
-    const matchAllResolver = jest.fn()
+    const matchAllResolver = vi.fn()
     const handler = new GraphQLHandler(
       OperationTypeNode.QUERY,
       /.*/,

src/core/handlers/HttpHandler.test.ts

@@ -1,5 +1,5 @@
 /**
- * @jest-environment jsdom
+ * @vitest-environment jsdom
  */
 import { HttpHandler, HttpRequestResolverExtras } from './HttpHandler'
 import { HttpResponse } from '..'

src/core/passthrough.test.ts

@@ -1,5 +1,5 @@
 /**
- * @jest-environment node
+ * @vitest-environment node
  */
 import { passthrough } from './passthrough'
 

src/core/utils/handleRequest.test.ts

@@ -1,5 +1,5 @@
 /**
- * @jest-environment jsdom
+ * @vitest-environment jsdom
  */
 import { Emitter } from 'strict-event-emitter'
 import { LifeCycleEventsMap, SharedOptions } from '../sharedOptions'
@@ -12,16 +12,16 @@ import { HttpResponse } from '../HttpResponse'
 import { passthrough } from '../passthrough'
 
 const options: RequiredDeep<SharedOptions> = {
-  onUnhandledRequest: jest.fn(),
+  onUnhandledRequest: vi.fn(),
 }
 const callbacks: Partial<Record<keyof HandleRequestOptions, any>> = {
-  onPassthroughResponse: jest.fn(),
-  onMockedResponse: jest.fn(),
+  onPassthroughResponse: vi.fn(),
+  onMockedResponse: vi.fn(),
 }
 
 function setup() {
   const emitter = new Emitter<LifeCycleEventsMap>()
-  const listener = jest.fn()
+  const listener = vi.fn()
 
   const createMockListener = (name: string) => {
     return (...args: any) => {
@@ -41,11 +41,11 @@ function setup() {
 }
 
 beforeEach(() => {
-  jest.spyOn(global.console, 'warn').mockImplementation()
+  vi.spyOn(global.console, 'warn').mockImplementation(() => void 0)
 })
 
 afterEach(() => {
-  jest.resetAllMocks()
+  vi.resetAllMocks()
 })
 
 test('returns undefined for a request with the "x-msw-intention" header equal to "bypass"', async () => {
@@ -244,8 +244,8 @@ test('returns a transformed response if the "transformResponse" option is provid
   const transformResponseImpelemntation = (response: Response): Response => {
     return new Response('transformed', response)
   }
-  const transformResponse = jest
-    .fn<Response, [Response]>()
+  const transformResponse = vi
+    .fn<[Response], Response>()
     .mockImplementation(transformResponseImpelemntation)
   const finalResponse = transformResponseImpelemntation(mockedResponse)
   const lookupResult = {

src/core/utils/internal/getCallFrame.test.ts

@@ -1,5 +1,5 @@
 /**
- * @jest-environment jsdom
+ * @vitest-environment jsdom
  */
 import { getCallFrame } from './getCallFrame'
 

src/core/utils/internal/parseGraphQLRequest.test.ts

@@ -1,5 +1,5 @@
 /**
- * @jest-environment jsdom
+ * @vitest-environment jsdom
  */
 import { encodeBuffer } from '@mswjs/interceptors'
 import { OperationTypeNode } from 'graphql'

src/core/utils/internal/parseMultipartData.test.ts

@@ -1,5 +1,5 @@
 /**
- * @jest-environment jsdom
+ * @vitest-environment jsdom
  */
 import { parseMultipartData } from './parseMultipartData'
 

src/core/utils/internal/pipeEvents.test.ts

@@ -6,7 +6,7 @@ it('pipes events from the source emitter to the destination emitter', () => {
   const destination = new Emitter()
   pipeEvents(source, destination)
 
-  const callback = jest.fn()
+  const callback = vi.fn()
   destination.on('hello', callback)
 
   source.emit('hello', 'world', { data: true })

src/core/utils/internal/tryCatch.test.ts

@@ -13,15 +13,17 @@ test('silences exceptions by default', () => {
   expect(result).toBeUndefined()
 })
 
-test('executes a custom callback function when an exception occurs', (done) => {
-  tryCatch(
-    () => {
-      throw new Error('Exception')
-    },
-    (error) => {
-      expect(error).toBeInstanceOf(Error)
-      expect(error.message).toEqual('Exception')
-      done()
-    },
-  )
+test('executes a custom callback function when an exception occurs', async () => {
+  await new Promise<void>((resolve) => {
+    tryCatch(
+      () => {
+        throw new Error('Exception')
+      },
+      (error) => {
+        expect(error).toBeInstanceOf(Error)
+        expect(error.message).toEqual('Exception')
+        resolve()
+      },
+    )
+  })
 })

src/core/utils/logging/getTimestamp.test.ts

@@ -3,13 +3,13 @@ import { getTimestamp } from './getTimestamp'
 beforeAll(() => {
   // Stub native `Date` prototype methods used in the tested module,
   // to always produce a predictable value for testing purposes.
-  jest.spyOn(global.Date.prototype, 'getHours').mockImplementation(() => 12)
-  jest.spyOn(global.Date.prototype, 'getMinutes').mockImplementation(() => 4)
-  jest.spyOn(global.Date.prototype, 'getSeconds').mockImplementation(() => 8)
+  vi.spyOn(global.Date.prototype, 'getHours').mockImplementation(() => 12)
+  vi.spyOn(global.Date.prototype, 'getMinutes').mockImplementation(() => 4)
+  vi.spyOn(global.Date.prototype, 'getSeconds').mockImplementation(() => 8)
 })
 
 afterAll(() => {
-  jest.restoreAllMocks()
+  vi.restoreAllMocks()
 })
 
 test('returns a timestamp string of the invocation time', () => {

src/core/utils/logging/serializeResponse.test.ts

@@ -1,5 +1,5 @@
 /**
- * @jest-environment node
+ * @vitest-environment node
  */
 import { encodeBuffer } from '@mswjs/interceptors'
 import { serializeResponse } from './serializeResponse'

src/core/utils/matching/matchRequestUrl.test.ts

@@ -1,5 +1,5 @@
 /**
- * @jest-environment jsdom
+ * @vitest-environment jsdom
  */
 import { coercePath, matchRequestUrl } from './matchRequestUrl'
 

src/core/utils/matching/normalizePath.node.test.ts

@@ -1,5 +1,5 @@
 /**
- * @jest-environment node
+ * @vitest-environment node
  */
 import { normalizePath } from './normalizePath'
 

src/core/utils/matching/normalizePath.test.ts

@@ -1,5 +1,5 @@
 /**
- * @jest-environment jsdom
+ * @vitest-environment jsdom
  */
 import { normalizePath } from './normalizePath'
 

src/core/utils/request/getPublicUrlFromRequest.test.ts

@@ -1,5 +1,5 @@
 /**
- * @jest-environment jsdom
+ * @vitest-environment jsdom
  */
 import { getPublicUrlFromRequest } from './getPublicUrlFromRequest'
 

src/core/utils/request/getRequestCookies.node.test.ts

@@ -1,5 +1,5 @@
 /**
- * @jest-environment node
+ * @vitest-environment node
  */
 import { getRequestCookies } from './getRequestCookies'
 

src/core/utils/request/getRequestCookies.test.ts

@@ -1,5 +1,5 @@
 /**
- * @jest-environment jsdom
+ * @vitest-environment jsdom
  */
 import { getRequestCookies } from './getRequestCookies'
 import { clearCookies } from '../../../../test/support/utils'

src/core/utils/request/onUnhandledRequest.test.ts

@@ -1,5 +1,5 @@
 /**
- * @jest-environment jsdom
+ * @vitest-environment jsdom
  */
 import {
   onUnhandledRequest,
@@ -41,12 +41,12 @@ Read more: https://mswjs.io/docs/getting-started/mocks`,
 }
 
 beforeEach(() => {
-  jest.spyOn(console, 'warn').mockImplementation()
-  jest.spyOn(console, 'error').mockImplementation()
+  vi.spyOn(console, 'warn').mockImplementation(() => void 0)
+  vi.spyOn(console, 'error').mockImplementation(() => void 0)
 })
 
 afterEach(() => {
-  jest.restoreAllMocks()
+  vi.restoreAllMocks()
 })
 
 test('supports the "bypass" request strategy', async () => {
@@ -85,11 +85,9 @@ test('supports the "error" request strategy', async () => {
 })
 
 test('supports a custom callback function', async () => {
-  const callback = jest.fn<void, Parameters<UnhandledRequestCallback>>(
-    (request) => {
-      console.warn(`callback: ${request.method} ${request.url}`)
-    },
-  )
+  const callback = vi.fn<Parameters<UnhandledRequestCallback>>((request) => {
+    console.warn(`callback: ${request.method} ${request.url}`)
+  })
   const request = new Request(new URL('/user', 'http://localhost:3000'))
   await onUnhandledRequest(request, [], callback)
 
@@ -106,7 +104,7 @@ test('supports a custom callback function', async () => {
 })
 
 test('supports calling default strategies from the custom callback function', async () => {
-  const callback = jest.fn<void, Parameters<UnhandledRequestCallback>>(
+  const callback = vi.fn<Parameters<UnhandledRequestCallback>>(
     (request, print) => {
       // Call the default "error" strategy.
       print.error()

src/core/utils/url/getAbsoluteUrl.node.test.ts

@@ -1,5 +1,5 @@
 /**
- * @jest-environment node
+ * @vitest-environment node
  */
 import { getAbsoluteUrl } from './getAbsoluteUrl'
 

src/core/utils/url/getAbsoluteUrl.test.ts

@@ -1,5 +1,5 @@
 /**
- * @jest-environment jsdom
+ * @vitest-environment jsdom
  */
 import { getAbsoluteUrl } from './getAbsoluteUrl'
 

src/core/utils/url/isAbsoluteUrl.test.ts

@@ -1,5 +1,5 @@
 /**
- * @jest-environment node
+ * @vitest-environment node
  */
 import { isAbsoluteUrl } from './isAbsoluteUrl'
 

src/tsconfig.core.build.json

@@ -0,0 +1,6 @@
+{
+  "extends": "./tsconfig.src.json",
+  "compilerOptions": {
+    "composite": false
+  }
+}

src/tsconfig.node.build.json

@@ -0,0 +1,6 @@
+{
+  "extends": "./tsconfig.node.json",
+  "compilerOptions": {
+    "composite": false
+  }
+}

src/tsconfig.node.json

@@ -0,0 +1,8 @@
+{
+  "extends": "./tsconfig.src.json",
+  "compilerOptions": {
+    "types": ["node"]
+  },
+  "include": ["./node", "./native"],
+  "exclude": ["**/*.test.ts"]
+}

src/tsconfig.src.json

@@ -0,0 +1,15 @@
+{
+  // Common configuration for everything
+  // living in the "src" directory.
+  "extends": "../tsconfig.base.json",
+  "compilerOptions": {
+    "composite": true,
+    "baseUrl": "./",
+    "paths": {
+      "~/core": ["core"],
+      "~/core/*": ["core/*"]
+    }
+  },
+  "include": ["../global.d.ts", "./**/*.ts"],
+  "exclude": ["./**/*.test.ts"]
+}

test/README.md

@@ -13,7 +13,7 @@ This directory categorizes all test suites based on the library's execution or A
 Example-driven test consists of two parts:
 
 - `*.mocks.ts`, a usage example and also a code snippet to test.
-- `*.test.ts`, an actual test suite for Jest.
+- `*.test.ts`, an actual test suite for Vitest.
 
 ## Contributing
 

test/browser/msw-api/setup-worker/scenarios/shared-worker/shared-worker.test.ts

@@ -1,5 +1,5 @@
 /**
- * @jest-environment node
+ * @vitest-environment node
  */
 import express from 'express'
 import { test, expect } from '../../../../playwright.extend'

test/browser/rest-api/request/matching/all.test.ts

@@ -1,5 +1,5 @@
 /**
- * @jest-environment node
+ * @vitest-environment node
  */
 import { Response } from '@playwright/test'
 import { test, expect } from '../../../playwright.extend'

test/jest.config.js

@@ -1,29 +0,0 @@
-/** @type {import('jest').Config} */
-module.exports = {
-  rootDir: './node',
-  transform: {
-    '^.+\\.ts$': '@swc/jest',
-  },
-  // Limit the concurrency because some tests recompile the library,
-  // creating a moment of time when it has no "lib" files.
-  maxWorkers: 1,
-  moduleNameMapper: {
-    '^msw(.*)': '<rootDir>/../..$1',
-  },
-  testEnvironmentOptions: {
-    // Force JSDOM to use the Node module resolution because we're still in Node.js.
-    // Using browser resolution won't work by design because JSDOM is not a browser
-    // and doesn't ship with 100% compatibility with the browser APIs.
-    // In tests, using browser resolution will result in "ClientRequest" imports
-    // from "@mswjs/interceptors" to not be found because they are not exported
-    // by the browser bundle of that library.
-    customExportConditions: [''],
-  },
-  globals: {
-    fetch,
-    Request,
-    Response,
-    TextEncoder,
-    TextDecoder,
-  },
-}

test/modules/node/jest.config.js

@@ -1,9 +0,0 @@
-/** @type {import('jest').Config} */
-module.exports = {
-  rootDir: '.',
-  transform: {
-    '^.+\\.ts$': '@swc/jest',
-  },
-  testEnvironment: 'node',
-  testTimeout: 60_000,
-}

test/modules/node/tsconfig.json

@@ -0,0 +1,7 @@
+{
+  "extends": "../../../tsconfig.base.json",
+  "compilerOptions": {
+    "types": ["vitest/globals"]
+  },
+  "include": ["./**/*.test.ts"]
+}

test/modules/node/vitest.config.ts

@@ -0,0 +1,10 @@
+import { defineConfig } from 'vitest/config'
+
+export default defineConfig({
+  test: {
+    globals: true,
+    dir: __dirname,
+    environment: 'node',
+    testTimeout: 60_000,
+  },
+})

test/node/graphql-api/anonymous-operations.test.ts

@@ -1,5 +1,5 @@
 /**
- * @jest-environment node
+ * @vitest-environment node
  */
 import fetch from 'node-fetch'
 import { HttpServer } from '@open-draft/test-server/http'
@@ -21,16 +21,16 @@ const server = setupServer(graphql.query('GetUser', () => {}))
 beforeAll(async () => {
   server.listen()
   await httpServer.listen()
-  jest.spyOn(console, 'warn').mockImplementation(() => {})
+  vi.spyOn(console, 'warn').mockImplementation(() => {})
 })
 
 afterEach(() => {
   server.resetHandlers()
-  jest.resetAllMocks()
+  vi.resetAllMocks()
 })
 
 afterAll(async () => {
-  jest.restoreAllMocks()
+  vi.restoreAllMocks()
   server.close()
   await httpServer.close()
 })

test/node/graphql-api/cookies.node.test.ts

@@ -1,7 +1,7 @@
 /**
- * @jest-environment node
+ * @vitest-environment node
  */
-import * as cookieUtils from 'cookie'
+import cookieUtils from '@bundled-es-modules/cookie'
 import fetch from 'node-fetch'
 import { graphql as executeGraphql, buildSchema } from 'graphql'
 import { graphql, HttpResponse } from 'msw'
@@ -70,7 +70,7 @@ test('sets cookie on the mocked response', async () => {
     }),
   })
   const body = await res.json()
-  const cookieString = res.headers.get('set-cookie')
+  const cookieString = res.headers.get('set-cookie')!
   const responseCookies = cookieUtils.parse(cookieString)
 
   expect(cookieString).toBe('test-cookie=value')

test/node/graphql-api/extensions.node.test.ts

@@ -1,5 +1,5 @@
 /**
- * @jest-environment node
+ * @vitest-environment node
  */
 import fetch from 'node-fetch'
 import type { ExecutionResult } from 'graphql'

test/node/graphql-api/response-patching.node.test.ts

@@ -1,5 +1,5 @@
 /**
- * @jest-environment node
+ * @vitest-environment node
  */
 import { bypass, graphql, HttpResponse } from 'msw'
 import { setupServer } from 'msw/node'

test/node/msw-api/auto-update-worker.node.test.ts

@@ -1,11 +1,11 @@
 /**
- * @jest-environment node
+ * @vitest-environment node
  */
 import * as fs from 'fs'
 import { execSync } from 'child_process'
 import { createTeardown } from 'fs-teardown'
 import { fromTemp } from '../../support/utils'
-import packageJson from '../../../package.json'
+import * as packageJson from '../../../package.json'
 
 const fsMock = createTeardown({
   rootDir: fromTemp('auto-update-worker'),

test/node/msw-api/cli/init.node.test.ts

@@ -1,5 +1,5 @@
 /**
- * @jest-environment node
+ * @vitest-environment node
  */
 import * as path from 'path'
 import * as fs from 'fs-extra'
@@ -37,7 +37,7 @@ beforeEach(async () => {
 })
 
 afterAll(async () => {
-  jest.restoreAllMocks()
+  vi.restoreAllMocks()
   await fsMock.cleanup()
 })
 
@@ -170,15 +170,15 @@ test('does not produce eslint errors or warnings', async () => {
 test('errors and shuts down if creating a directory fails', async () => {
   const init = require('../../../../cli/init')
   const error = new Error('Could not create this directory')
-  jest.spyOn(fs.promises, 'mkdir').mockRejectedValue(error)
+  vi.spyOn(fs.promises, 'mkdir').mockRejectedValue(error)
 
-  const exitSpy = jest.spyOn(process, 'exit').mockImplementationOnce(() => {
+  const exitSpy = vi.spyOn(process, 'exit').mockImplementationOnce(() => {
     throw error
   })
 
-  const consoleSpy = jest
+  const consoleSpy = vi
     .spyOn(console, 'error')
-    .mockImplementationOnce(jest.fn())
+    .mockImplementationOnce(() => void 0)
 
   const publicDir = 'public'
 

test/node/msw-api/context/delay.node.test.ts

@@ -1,5 +1,5 @@
 /**
- * @jest-environment node
+ * @vitest-environment node
  */
 import fetch from 'node-fetch'
 import { delay, HttpResponse, http } from 'msw'

test/node/msw-api/req/passthrough.node.test.ts

@@ -1,5 +1,5 @@
 /**
- * @jest-environment node
+ * @vitest-environment node
  */
 import fetch from 'node-fetch'
 import { HttpResponse, passthrough, http } from 'msw'
@@ -24,12 +24,12 @@ beforeAll(async () => {
 })
 
 beforeEach(() => {
-  jest.spyOn(console, 'warn').mockImplementation()
+  vi.spyOn(console, 'warn').mockImplementation(() => void 0)
 })
 
 afterEach(() => {
   server.resetHandlers()
-  jest.restoreAllMocks()
+  vi.restoreAllMocks()
 })
 
 afterAll(async () => {

test/node/msw-api/res/network-error.node.test.ts

@@ -1,5 +1,5 @@
 /**
- * @jest-environment node
+ * @vitest-environment node
  */
 import { http, HttpResponse } from 'msw'
 import { setupServer } from 'msw/node'

test/node/msw-api/setup-server/life-cycle-events/on.node.test.ts

@@ -1,5 +1,5 @@
 /**
- * @jest-environment node
+ * @vitest-environment node
  */
 import fetch from 'node-fetch'
 import { HttpResponse, http } from 'msw'
@@ -15,9 +15,9 @@ const httpServer = new HttpServer((app) => {
 
 const server = setupServer()
 
-const listener = jest.fn()
+const listener = vi.fn()
 
-function getRequestId(requestStartListener: jest.Mock) {
+function getRequestId(requestStartListener: vi.Mock) {
   const { calls } = requestStartListener.mock
   const requestStartCall = calls.find((call) => {
     return call[0].startsWith('[request:start]')
@@ -78,11 +78,11 @@ beforeAll(async () => {
 beforeEach(() => {
   // Supress "Expected a mocking resolver function to return a mocked response"
   // warnings. Using intentional explicit empty resolver.
-  jest.spyOn(global.console, 'warn').mockImplementation()
+  vi.spyOn(global.console, 'warn').mockImplementation(() => void 0)
 })
 
 afterEach(() => {
-  jest.restoreAllMocks()
+  vi.restoreAllMocks()
 })
 
 afterAll(async () => {

test/node/msw-api/setup-server/life-cycle-events/removeAllListeners.node.test.ts

@@ -1,5 +1,5 @@
 /**
- * @jest-environment node
+ * @vitest-environment node
  */
 import fetch from 'node-fetch'
 import { HttpResponse, http } from 'msw'
@@ -26,7 +26,7 @@ beforeAll(async () => {
 })
 
 afterEach(() => {
-  jest.restoreAllMocks()
+  vi.restoreAllMocks()
 })
 
 afterAll(async () => {
@@ -36,8 +36,8 @@ afterAll(async () => {
 
 test('removes all listeners attached to the server instance', async () => {
   const listeners = {
-    requestStart: jest.fn(),
-    requestEnd: jest.fn(),
+    requestStart: vi.fn(),
+    requestEnd: vi.fn(),
   }
   server.events.on('request:start', listeners.requestStart)
   server.events.on('request:end', listeners.requestEnd)
@@ -57,8 +57,8 @@ test('removes all listeners attached to the server instance', async () => {
 
 test('removes all the listeners by the event name', async () => {
   const listeners = {
-    requestStart: jest.fn(),
-    requestEnd: jest.fn(),
+    requestStart: vi.fn(),
+    requestEnd: vi.fn(),
   }
   server.events.on('request:start', listeners.requestStart)
   server.events.on('request:start', listeners.requestStart)
@@ -73,8 +73,8 @@ test('removes all the listeners by the event name', async () => {
 
 test('does not remove the internal listeners', async () => {
   const listeners = {
-    requestStart: jest.fn(),
-    responseMocked: jest.fn(),
+    requestStart: vi.fn(),
+    responseMocked: vi.fn(),
   }
 
   server.events.on('request:start', listeners.requestStart)

test/node/msw-api/setup-server/life-cycle-events/removeListener.node.test.ts

@@ -1,5 +1,5 @@
 /**
- * @jest-environment node
+ * @vitest-environment node
  */
 import fetch from 'node-fetch'
 import { HttpResponse, http } from 'msw'
@@ -32,8 +32,8 @@ afterAll(async () => {
 
 test('removes a listener by the event name', async () => {
   const listeners = {
-    requestStart: jest.fn(),
-    requestEnd: jest.fn(),
+    requestStart: vi.fn(),
+    requestEnd: vi.fn(),
   }
   server.events.on('request:start', listeners.requestStart)
   server.events.on('request:end', listeners.requestEnd)

test/node/msw-api/setup-server/listHandlers.node.test.ts

@@ -1,5 +1,5 @@
 /**
- * @jest-environment node
+ * @vitest-environment node
  */
 import { http, graphql } from 'msw'
 import { setupServer } from 'msw/node'

test/node/msw-api/setup-server/resetHandlers.node.test.ts

@@ -1,5 +1,5 @@
 /**
- * @jest-environment node
+ * @vitest-environment node
  */
 import fetch from 'node-fetch'
 import { HttpResponse, http } from 'msw'
@@ -12,12 +12,12 @@ const server = setupServer(
 )
 
 beforeAll(() => {
-  jest.spyOn(global.console, 'warn').mockImplementation()
+  vi.spyOn(global.console, 'warn').mockImplementation(() => void 0)
   server.listen()
 })
 
 afterAll(() => {
-  jest.restoreAllMocks()
+  vi.restoreAllMocks()
   server.close()
 })
 

test/node/msw-api/setup-server/restoreHandlers.node.test.ts

@@ -1,5 +1,5 @@
 /**
- * @jest-environment node
+ * @vitest-environment node
  */
 import fetch from 'node-fetch'
 import { HttpResponse, http } from 'msw'

test/node/msw-api/setup-server/scenarios/cookies-request.node.test.ts

@@ -1,5 +1,5 @@
 /**
- * @jest-environment node
+ * @vitest-environment node
  */
 import https from 'https'
 import { http, HttpResponse } from 'msw'

test/node/msw-api/setup-server/scenarios/fake-timers.node.test.ts

@@ -12,12 +12,12 @@ beforeAll(() => server.listen())
 afterAll(() => server.close())
 
 test('tolerates fake timers', async () => {
-  jest.useFakeTimers()
+  vi.useFakeTimers()
 
   const res = await fetch('https://test.mswjs.io/pull')
   const body = await res.json()
 
-  jest.useRealTimers()
+  vi.useRealTimers()
 
   expect(body).toEqual({ status: 'pulled' })
 })

test/node/msw-api/setup-server/scenarios/fall-through.node.test.ts

@@ -1,11 +1,11 @@
 /**
- * @jest-environment node
+ * @vitest-environment node
  */
 import fetch from 'node-fetch'
 import { HttpResponse, http } from 'msw'
 import { setupServer } from 'msw/node'
 
-const log = jest.fn()
+const log = vi.fn()
 
 const server = setupServer(
   http.get('https://test.mswjs.io/*', () => log('[get] first')),
@@ -24,7 +24,7 @@ beforeAll(() => {
 })
 
 afterEach(() => {
-  jest.resetAllMocks()
+  vi.resetAllMocks()
 })
 
 afterAll(() => {

test/node/msw-api/setup-server/scenarios/generator.node.test.ts

@@ -1,5 +1,5 @@
 /**
- * @jest-environment node
+ * @vitest-environment node
  */
 import fetch from 'node-fetch'
 import { HttpResponse, http } from 'msw'

test/node/msw-api/setup-server/scenarios/graphql.node.test.ts

@@ -1,5 +1,5 @@
 /**
- * @jest-environment node
+ * @vitest-environment node
  */
 import fetch from 'cross-fetch'
 import { graphql, HttpResponse } from 'msw'

test/node/msw-api/setup-server/scenarios/http.node.test.ts

@@ -1,5 +1,5 @@
 /**
- * @jest-environment node
+ * @vitest-environment node
  */
 import nodeHttp from 'http'
 import { HttpServer } from '@open-draft/test-server/http'

test/node/msw-api/setup-server/scenarios/https.node.test.ts

@@ -1,5 +1,5 @@
 /**
- * @jest-environment node
+ * @vitest-environment node
  */
 import https from 'https'
 import { HttpServer, httpsAgent } from '@open-draft/test-server/http'

test/node/msw-api/setup-server/scenarios/on-unhandled-request/bypass.node.test.ts

@@ -1,10 +1,10 @@
 /**
- * @jest-environment node
+ * @vitest-environment node
  */
 import fetch from 'node-fetch'
 import { HttpServer } from '@open-draft/test-server/http'
-import { setupServer } from 'msw/node'
 import { HttpResponse, http } from 'msw'
+import { setupServer } from 'msw/node'
 
 const httpServer = new HttpServer((app) => {
   app.get('/', (req, res) => {
@@ -27,12 +27,12 @@ beforeAll(async () => {
   )
   server.listen({ onUnhandledRequest: 'bypass' })
 
-  jest.spyOn(global.console, 'error').mockImplementation()
-  jest.spyOn(global.console, 'warn').mockImplementation()
+  vi.spyOn(global.console, 'error').mockImplementation(() => void 0)
+  vi.spyOn(global.console, 'warn').mockImplementation(() => void 0)
 })
 
 afterAll(async () => {
-  jest.restoreAllMocks()
+  vi.restoreAllMocks()
   server.close()
   await httpServer.close()
 })

test/node/msw-api/setup-server/scenarios/on-unhandled-request/callback-throws.node.test.ts

@@ -1,5 +1,5 @@
 /**
- * @jest-environment node
+ * @vitest-environment node
  */
 import fetch from 'node-fetch'
 import { setupServer } from 'msw/node'

test/node/msw-api/setup-server/scenarios/on-unhandled-request/callback.node.test.ts

@@ -1,5 +1,5 @@
 /**
- * @jest-environment node
+ * @vitest-environment node
  */
 import fetch from 'node-fetch'
 import { setupServer } from 'msw/node'

test/node/msw-api/setup-server/scenarios/on-unhandled-request/default.node.test.ts

@@ -1,5 +1,5 @@
 /**
- * @jest-environment node
+ * @vitest-environment node
  */
 import fetch from 'node-fetch'
 import { setupServer } from 'msw/node'
@@ -13,13 +13,13 @@ const server = setupServer(
 
 beforeAll(() => {
   server.listen()
-  jest.spyOn(global.console, 'error').mockImplementation()
-  jest.spyOn(global.console, 'warn').mockImplementation()
+  vi.spyOn(global.console, 'error').mockImplementation(() => void 0)
+  vi.spyOn(global.console, 'warn').mockImplementation(() => void 0)
 })
 
 afterAll(() => {
   server.close()
-  jest.restoreAllMocks()
+  vi.restoreAllMocks()
 })
 
 test('warns on unhandled requests by default', async () => {

test/node/msw-api/setup-server/scenarios/on-unhandled-request/error.node.test.ts

@@ -1,5 +1,5 @@
 /**
- * @jest-environment node
+ * @vitest-environment node
  */
 import fetch from 'node-fetch'
 import { HttpServer } from '@open-draft/test-server/http'
@@ -40,16 +40,16 @@ beforeAll(async () => {
 })
 
 beforeEach(() => {
-  jest.spyOn(global.console, 'error').mockImplementation()
-  jest.spyOn(global.console, 'warn').mockImplementation()
+  vi.spyOn(global.console, 'error').mockImplementation(() => void 0)
+  vi.spyOn(global.console, 'warn').mockImplementation(() => void 0)
 })
 
 afterEach(() => {
-  jest.resetAllMocks()
+  vi.resetAllMocks()
 })
 
 afterAll(async () => {
-  jest.restoreAllMocks()
+  vi.restoreAllMocks()
   server.close()
   await httpServer.close()
 })

test/node/msw-api/setup-server/scenarios/on-unhandled-request/warn.node.test.ts

@@ -1,5 +1,5 @@
 /**
- * @jest-environment node
+ * @vitest-environment node
  */
 import fetch from 'node-fetch'
 import { setupServer } from 'msw/node'
@@ -13,12 +13,12 @@ const server = setupServer(
 
 beforeAll(() => {
   server.listen({ onUnhandledRequest: 'warn' })
-  jest.spyOn(global.console, 'warn').mockImplementation()
+  vi.spyOn(global.console, 'warn').mockImplementation(() => void 0)
 })
 
 afterAll(() => {
   server.close()
-  jest.restoreAllMocks()
+  vi.restoreAllMocks()
 })
 
 test('warns on unhandled request when using the "warn" value', async () => {

test/node/msw-api/setup-server/scenarios/relative-url.node.test.ts

@@ -1,5 +1,5 @@
 /**
- * @jest-environment node
+ * @vitest-environment node
  */
 import fetch from 'node-fetch'
 import { HttpResponse, http } from 'msw'

test/node/msw-api/setup-server/scenarios/response-patching..node.test.ts

@@ -1,5 +1,5 @@
 /**
- * @jest-environment node
+ * @vitest-environment node
  */
 import { HttpServer } from '@open-draft/test-server/http'
 import { HttpResponse, http, bypass } from 'msw'

test/node/msw-api/setup-server/scenarios/xhr.node.test.ts

@@ -1,5 +1,5 @@
 /**
- * @jest-environment jsdom
+ * @vitest-environment jsdom
  */
 import { http } from 'msw'
 import { setupServer } from 'msw/node'
@@ -37,16 +37,22 @@ describe('given I perform an XMLHttpRequest', () => {
   let headers: Headers
   let body: string
 
-  beforeAll((done) => {
+  beforeAll(async () => {
     const req = new XMLHttpRequest()
     req.open('GET', 'http://localhost:3001/resource')
-    req.onload = function () {
-      statusCode = this.status
-      body = JSON.parse(this.response)
-      headers = stringToHeaders(this.getAllResponseHeaders())
-      done()
-    }
+
+    const requestFinishPromise = new Promise<void>((resolve, reject) => {
+      req.onload = function () {
+        statusCode = this.status
+        body = JSON.parse(this.response)
+        headers = stringToHeaders(this.getAllResponseHeaders())
+        resolve()
+      }
+      req.onerror = reject.bind(req)
+    })
     req.send()
+
+    await requestFinishPromise
   })
 
   test('returns mocked status code', () => {

test/node/msw-api/setup-server/use.node.test.ts

@@ -1,5 +1,5 @@
 /**
- * @jest-environment node
+ * @vitest-environment node
  */
 import fetch from 'node-fetch'
 import { HttpResponse, http } from 'msw'

test/node/regressions/many-request-handlers-jsdom.test.ts

@@ -1,5 +1,5 @@
 /**
- * @jest-environment jsdom
+ * @vitest-environment jsdom
  *
  * @note In JSDOM, the "AbortSignal" class is polyfilled instead of
  * using the Node.js global. Because of that, its instances won't
@@ -32,12 +32,12 @@ const server = setupServer(...restHandlers, ...graphqlHanlers)
 
 beforeAll(() => {
   server.listen()
-  jest.spyOn(process.stderr, 'write')
+  vi.spyOn(process.stderr, 'write')
 })
 
 afterAll(() => {
   server.close()
-  jest.restoreAllMocks()
+  vi.restoreAllMocks()
 })
 
 it('does not print a memory leak warning when having many request handlers', async () => {

test/node/regressions/many-request-handlers.test.ts

@@ -1,5 +1,5 @@
 /**
- * @jest-environment node
+ * @vitest-environment node
  */
 import { graphql, http, HttpResponse } from 'msw'
 import { setupServer } from 'msw/node'
@@ -25,12 +25,12 @@ const server = setupServer(...restHandlers, ...graphqlHanlers)
 
 beforeAll(() => {
   server.listen()
-  jest.spyOn(process.stderr, 'write')
+  vi.spyOn(process.stderr, 'write')
 })
 
 afterAll(() => {
   server.close()
-  jest.restoreAllMocks()
+  vi.restoreAllMocks()
 })
 
 it('does not print a memory leak warning when having many request handlers', async () => {

test/node/rest-api/cookies-inheritance.node.test.ts

@@ -1,5 +1,5 @@
 /**
- * @jest-environment node
+ * @vitest-environment jsdom
  */
 import fetch from 'node-fetch'
 import { HttpResponse, http } from 'msw'
@@ -61,11 +61,15 @@ test('inherits cookies set from a preceeding request', async () => {
   const res = await fetch(httpServer.https.url('/login'), {
     method: 'POST',
   }).then(() => {
+    // Fetch the user after requesting login to see
+    // if the response cookies set in the login request handler
+    // are automatically forwarded to the "GET /user" request.
     return fetch(httpServer.https.url('/user'))
   })
-  const json = await res.json()
 
   expect(res.status).toBe(200)
+
+  const json = await res.json()
   expect(json).toEqual({
     firstName: 'John',
     lastName: 'Maverick',

test/node/rest-api/https.node.test.ts

@@ -1,5 +1,5 @@
 /**
- * @jest-environment node
+ * @vitest-environment node
  */
 import https from 'https'
 import { HttpResponse, http } from 'msw'
@@ -19,7 +19,7 @@ afterAll(() => {
   server.close()
 })
 
-test('intercepts and mocks a request made via "https"', (done) => {
+test('intercepts and mocks a request made via "https"', async () => {
   server.use(
     http.get('https://api.example.com/resource', () => {
       return HttpResponse.text('Hello, world!')
@@ -27,20 +27,21 @@ test('intercepts and mocks a request made via "https"', (done) => {
   )
   const request = https.get('https://api.example.com/resource')
 
-  request.on('response', (response) => {
-    const chunks: Array<Buffer> = []
-    response.on('data', (chunk) => chunks.push(Buffer.from(chunk)))
+  await new Promise<void>((resolve, reject) => {
+    request.on('response', (response) => {
+      const chunks: Array<Buffer> = []
+      response.on('data', (chunk) => chunks.push(Buffer.from(chunk)))
 
-    response.on('error', done)
-    response.once('end', () => {
-      expect(chunks).toHaveLength(1)
+      response.on('error', (error) => reject(error))
+      response.once('end', () => {
+        expect(chunks).toHaveLength(1)
 
-      const responseText = Buffer.concat(chunks).toString('utf8')
-      expect(responseText).toBe('Hello, world!')
+        const responseText = Buffer.concat(chunks).toString('utf8')
+        expect(responseText).toBe('Hello, world!')
 
-      done()
+        resolve()
+      })
     })
+    request.on('error', (error) => reject(error))
   })
-
-  request.on('error', done)
 })

test/node/rest-api/request/body/body-arraybuffer.node.test.ts

@@ -1,5 +1,5 @@
 /**
- * @jest-environment node
+ * @vitest-environment node
  */
 import fetch from 'node-fetch'
 import { http, HttpResponse } from 'msw'

test/node/rest-api/request/body/body-form-data.node.test.ts

@@ -1,5 +1,5 @@
 /**
- * @jest-environment node
+ * @vitest-environment node
  */
 import { HttpResponse, http } from 'msw'
 import { setupServer } from 'msw/node'

test/node/rest-api/request/body/body-json.node.test.ts

@@ -1,5 +1,5 @@
 /**
- * @jest-environment node
+ * @vitest-environment node
  */
 import fetch from 'node-fetch'
 import { HttpResponse, http } from 'msw'

test/node/rest-api/request/body/body-text.node.test.ts

@@ -1,5 +1,5 @@
 /**
- * @jest-environment node
+ * @vitest-environment node
  */
 import fetch from 'node-fetch'
 import { HttpResponse, http } from 'msw'

test/node/rest-api/request/body/body-used.node.test.ts

@@ -1,5 +1,5 @@
 /**
- * @jest-environment node
+ * @vitest-environment node
  */
 import { HttpResponse, http, graphql } from 'msw'
 import { setupServer } from 'msw/node'
@@ -21,7 +21,7 @@ beforeAll(async () => {
 
 afterEach(() => {
   server.resetHandlers()
-  jest.restoreAllMocks()
+  vi.restoreAllMocks()
 })
 
 afterAll(async () => {
@@ -31,7 +31,7 @@ afterAll(async () => {
 
 it('does not read the body while parsing an unhandled request', async () => {
   // Expecting an unhandled request warning in this test.
-  jest.spyOn(console, 'warn').mockImplementation(() => {})
+  vi.spyOn(console, 'warn').mockImplementation(() => {})
 
   const requestUrl = httpServer.http.url('/resource')
   const response = await fetch(requestUrl, {

test/node/rest-api/request/matching/all.node.test.ts

@@ -1,5 +1,5 @@
 /**
- * @jest-environment node
+ * @vitest-environment node
  */
 import fetch, { Response } from 'node-fetch'
 import { HttpServer } from '@open-draft/test-server/http'

test/node/rest-api/request/matching/path-params-decode.node.test.ts

@@ -1,5 +1,5 @@
 /**
- * @jest-environment node
+ * @vitest-environment node
  */
 import fetch from 'node-fetch'
 import { HttpResponse, http } from 'msw'

test/node/rest-api/response/body-binary.node.test.ts

@@ -1,5 +1,5 @@
 /**
- * @jest environment-node
+ * @vitest-environment node
  */
 import * as path from 'path'
 import * as fs from 'fs'

test/node/rest-api/response/body-json.node.test.ts

@@ -1,5 +1,5 @@
 /**
- * @jest-environment node
+ * @vitest-environment node
  */
 import { HttpResponse, http } from 'msw'
 import { setupServer } from 'msw/node'

test/node/rest-api/response/body-stream.node.test.ts

@@ -1,5 +1,5 @@
 /**
- * @jest-environment node
+ * @vitest-environment node
  */
 import https from 'https'
 import { HttpResponse, http, delay } from 'msw'
@@ -49,7 +49,7 @@ test('responds with a ReadableStream', async () => {
   expect(await response.text()).toBe('helloworld')
 })
 
-test('supports delays when enqueuing chunks', (done) => {
+test('supports delays when enqueuing chunks', async () => {
   server.use(
     http.get('https://api.example.com/stream', () => {
       const stream = new ReadableStream({
@@ -74,29 +74,31 @@ test('supports delays when enqueuing chunks', (done) => {
     }),
   )
 
-  const request = https.get('https://api.example.com/stream', (response) => {
-    const chunks: Array<{ buffer: Buffer; timestamp: number }> = []
+  await new Promise<void>((resolve, reject) => {
+    const request = https.get('https://api.example.com/stream', (response) => {
+      const chunks: Array<{ buffer: Buffer; timestamp: number }> = []
 
-    response.on('data', (data) => {
-      chunks.push({
-        buffer: Buffer.from(data),
-        timestamp: Date.now(),
+      response.on('data', (data) => {
+        chunks.push({
+          buffer: Buffer.from(data),
+          timestamp: Date.now(),
+        })
+      })
+
+      response.once('end', () => {
+        const textChunks = chunks.map((chunk) => chunk.buffer.toString('utf8'))
+        expect(textChunks).toEqual(['first', 'second', 'third'])
+
+        // Ensure that the chunks were sent over time,
+        // respecting the delay set in the mocked stream.
+        const chunkTimings = chunks.map((chunk) => chunk.timestamp)
+        expect(chunkTimings[1] - chunkTimings[0]).toBeGreaterThanOrEqual(490)
+        expect(chunkTimings[2] - chunkTimings[1]).toBeGreaterThanOrEqual(490)
+
+        resolve()
       })
     })
 
-    response.once('end', () => {
-      const textChunks = chunks.map((chunk) => chunk.buffer.toString('utf8'))
-      expect(textChunks).toEqual(['first', 'second', 'third'])
-
-      // Ensure that the chunks were sent over time,
-      // respecting the delay set in the mocked stream.
-      const chunkTimings = chunks.map((chunk) => chunk.timestamp)
-      expect(chunkTimings[1] - chunkTimings[0]).toBeGreaterThanOrEqual(490)
-      expect(chunkTimings[2] - chunkTimings[1]).toBeGreaterThanOrEqual(490)
-
-      done()
-    })
+    request.on('error', (error) => reject(error))
   })
-
-  request.on('error', done)
 })