chore: add an external package

apps/foo/__mocks__/sample.ts

@@ -1,6 +1,6 @@
 import { Mock, vi } from 'vitest'
 
 export const main: Mock = vi.fn().mockImplementation(() => {
-  console.log('Fake implementation')
+  console.log('sample: fake implementation')
   return false
 })

apps/foo/__mocks__/undici.ts

@@ -0,0 +1,14 @@
+import { Mock, vi } from 'vitest'
+
+export const request: Mock = vi.fn().mockImplementation(() => ({
+  body: {
+    json: vi.fn().mockImplementation(() => {
+      console.log('undici: mocked implementation')
+      return {
+        id: 12,
+        quote: 'Life is what happens to you while you\'re busy making other plans.',
+        author: 'John Lennon',
+      }
+    })
+  }
+}))

apps/foo/package.json

@@ -15,7 +15,8 @@
   },
   "dependencies": {
     "sample": "workspace:*",
-    "tslib": "^2.5.0"
+    "tslib": "^2.5.0",
+    "undici": "^5.22.0"
   },
   "devDependencies": {
     "@ducktors/tsconfig": "^0.1.1",

apps/foo/src/index.test.ts

@@ -1,9 +1,17 @@
 import { expect, test, vi } from 'vitest'
 
-import { app } from './index'
+import { quote, boolean } from './index'
 
 vi.mock('sample')
+vi.mock('undici')
 
-test('should use a mocked dependency', () => {
-  expect(app()).toBe(false)
+test('should use a mocked implementation of undici', async () => {
+  expect(await quote()).toEqual({
+    quote: 'Life is what happens to you while you\'re busy making other plans.',
+    author: 'John Lennon',
+  })
+})
+
+test('should use a mocked implementation of sample', () => {
+  expect(boolean()).toBe(false)
 })

apps/foo/src/index.ts

@@ -1,5 +1,13 @@
 import { main } from 'sample'
+import { request } from 'undici'
 
-export function app() {
+export async function quote() {
+  const { body } = await request('https://dummyjson.com/quotes/7')
+  const { quote, author } = await body.json()
+
+  return { quote, author }
+}
+
+export function boolean() {
   return main()
 }

packages/sample/src/index.ts

@@ -1,4 +1,4 @@
 export function main() {
-  console.log('Real implementation')
+  console.log('sample: real implementation')
   return true
 }