feat: added fastify example (#1991)

examples/README.md

@@ -1,6 +1,7 @@
 | Example | Source | Playground |
 |---|---|---|
 | `basic` | [GitHub](https://github.com/vitest-dev/vitest/tree/main/examples/basic) | [Play Online](https://stackblitz.com/fork/github/vitest-dev/vitest/tree/main/examples/basic?initialPath=__vitest__) |
+| `fastify` | [GitHub](https://github.com/vitest-dev/vitest/tree/main/examples/fastify) | [Play Online](https://stackblitz.com/fork/github/vitest-dev/vitest/tree/main/examples/fastify?initialPath=__vitest__) |
 | `graphql` | [GitHub](https://github.com/vitest-dev/vitest/tree/main/examples/graphql) | [Play Online](https://stackblitz.com/fork/github/vitest-dev/vitest/tree/main/examples/graphql?initialPath=__vitest__) |
 | `lit` | [GitHub](https://github.com/vitest-dev/vitest/tree/main/examples/lit) | [Play Online](https://stackblitz.com/fork/github/vitest-dev/vitest/tree/main/examples/lit?initialPath=__vitest__) |
 | `mocks` | [GitHub](https://github.com/vitest-dev/vitest/tree/main/examples/mocks) | [Play Online](https://stackblitz.com/fork/github/vitest-dev/vitest/tree/main/examples/mocks?initialPath=__vitest__) |

examples/fastify/mockData.ts

@@ -0,0 +1,22 @@
+const usersData = [{
+  id: 1,
+  name: 'John Snow',
+  email: 'john@got.com',
+},
+{
+  id: 2,
+  name: 'Daenerys Targaryen',
+  email: 'daenerys@got.com',
+},
+{
+  id: 3,
+  name: 'Arya Stark',
+  email: 'arya@got.com',
+},
+{
+  id: 4,
+  name: 'Rhaenyra Targaryen',
+  email: 'rhaenyra@hod.com',
+},
+]
+export { usersData }

examples/fastify/package.json

@@ -0,0 +1,25 @@
+{
+  "name": "@vitest/example-fastify",
+  "type": "module",
+  "private": true,
+  "license": "MIT",
+  "main": "index.js",
+  "scripts": {
+    "dev": "NODE_ENV=development tsx watch src",
+    "test": "vitest",
+    "test:ui": "vitest --ui",
+    "test:run": "vitest run"
+  },
+  "devDependencies": {
+    "@vitest/ui": "latest",
+    "axios": "^0.26.1",
+    "fastify": "4.5.3",
+    "supertest": "6.2.4",
+    "tsx": "^3.9.0",
+    "vite": "latest",
+    "vitest": "latest"
+  },
+  "stackblitz": {
+    "startCommand": "npm run test:ui"
+  }
+}

examples/fastify/src/app.ts

@@ -0,0 +1,13 @@
+import type { FastifyInstance } from 'fastify'
+import Fastify from 'fastify'
+import { usersData } from '../mockData'
+
+const app: FastifyInstance = Fastify({
+  logger: process.env.NODE_ENV === 'development',
+})
+
+app.get('/users', async () => {
+  return usersData
+})
+
+export default app

examples/fastify/src/index.ts

@@ -0,0 +1,13 @@
+import app from './app'
+
+const start = async () => {
+  try {
+    await app.listen({ port: 3000 })
+  }
+  catch (err) {
+    app.log.error(err)
+    process.exit(1)
+  }
+}
+
+start()

examples/fastify/test/app.test.ts

@@ -0,0 +1,46 @@
+import { afterAll, expect, test } from 'vitest'
+import supertest from 'supertest'
+import axios from 'axios'
+
+import app from '../src/app'
+import { usersData } from '../mockData'
+
+test('with HTTP injection', async () => {
+  const response = await app.inject({
+    method: 'GET',
+    url: '/users',
+  })
+
+  expect(response.statusCode).toBe(200)
+  expect(JSON.parse(response.payload)).toHaveLength(4)
+  expect(JSON.parse(response.payload)).toStrictEqual(usersData)
+})
+
+test('with a running server', async () => {
+  await app.ready()
+
+  const response = await supertest(app.server)
+    .get('/users')
+    .expect(200)
+
+  expect(response.body).toHaveLength(4)
+  expect(response.body).toStrictEqual(usersData)
+})
+
+test('with axios', async () => {
+  await app.listen()
+  await app.ready()
+
+  const address = app.server.address()
+  const port = typeof address === 'string' ? address : address?.port
+
+  const response = await axios.get(`http://localhost:${port}/users`)
+
+  expect(response.data).toHaveLength(4)
+  expect(response.data).toStrictEqual(usersData)
+})
+
+afterAll(async () => {
+  await app.close()
+})
+