test(api): ✅ add integration test for Google OAuth

apps/api/.test.env

@@ -1 +1,4 @@
 DATABASE_URL="postgresql://test:test@localhost:5433/tests"
+
+OAUTH_GOOGLE_CLIENT_ID="google-client-id"
+OAUTH_GOOGLE_CLIENT_SECRET="google-client-secret"

apps/api/package.json

@@ -82,6 +82,7 @@
     "eslint-plugin-prettier": "^5.0.0",
     "fishery": "^2.2.2",
     "jest": "^29.7.0",
+    "nock": "^13.5.4",
     "prettier": "^3.0.0",
     "prisma": "^5.11.0",
     "source-map-support": "^0.5.21",

apps/api/test/auth.e2e-spec.ts

@@ -0,0 +1,69 @@
+import { Server } from 'net'
+
+import { Test, TestingModule } from '@nestjs/testing'
+import { INestApplication } from '@nestjs/common'
+import request from 'supertest'
+import nock from 'nock'
+import { JwtService } from '@nestjs/jwt'
+
+import { AppModule } from '../src/app/app.module'
+
+describe('AuthController (e2e)', () => {
+  let app: INestApplication<Server>
+
+  // Mock Google OAuth API
+  nock('https://www.googleapis.com')
+    .post('/oauth2/v4/token')
+    .reply(200, {
+      access_token: 'your_access_token' // Access token for API access
+    })
+
+  nock('https://www.googleapis.com')
+    .get('/oauth2/v3/userinfo')
+    .query({ access_token: 'your_access_token' })
+    .reply(200, {
+      sub: '1234567890',
+      name: 'John Doe',
+      given_name: 'John',
+      family_name: 'Doe',
+      picture: 'image-url',
+      email: '[email protected]'
+    })
+
+  beforeAll(async () => {
+    const moduleFixture: TestingModule = await Test.createTestingModule({
+      imports: [AppModule]
+    }).compile()
+
+    app = moduleFixture.createNestApplication()
+    await app.init()
+  })
+
+  afterAll(async () => {
+    await app.close()
+  })
+
+  it('/auth/google (GET)', async () => {
+    const response = await request(app.getHttpServer()).get('/auth/google')
+
+    expect(response.status).toBe(302)
+    expect(response.headers.location).toContain('accounts.google.com')
+  })
+
+  it('/auth/google/callback (GET)', async () => {
+    const jwt = app.get(JwtService)
+
+    const response = await request(app.getHttpServer()).get('/auth/google/callback?code=your_code')
+    const cookies = response.headers['set-cookie'] as unknown as string[]
+
+    // Parse access token from cookie
+    const tokenCookie = cookies.find(cookie => cookie.startsWith('access_token='))
+    const accessToken = tokenCookie?.split(';')[0].split('=')[1]
+
+    if (!accessToken) {
+      throw new Error('Access token not found')
+    }
+
+    expect(jwt.decode(accessToken).email).toBe('[email protected]')
+  })
+})

yarn.lock

@@ -7026,6 +7026,7 @@ __metadata:
     jest: "npm:^29.7.0"
     nest-winston: "npm:^1.9.4"
     nestjs-zod: "npm:^3.0.0"
+    nock: "npm:^13.5.4"
     passport: "npm:^0.7.0"
     passport-google-oauth20: "npm:^2.0.0"
     passport-jwt: "npm:^4.0.1"
@@ -15475,6 +15476,13 @@ __metadata:
   languageName: node
   linkType: hard
 
+"json-stringify-safe@npm:^5.0.1":
+  version: 5.0.1
+  resolution: "json-stringify-safe@npm:5.0.1"
+  checksum: 10c0/7dbf35cd0411d1d648dceb6d59ce5857ec939e52e4afc37601aa3da611f0987d5cee5b38d58329ceddf3ed48bd7215229c8d52059ab01f2444a338bf24ed0f37
+  languageName: node
+  linkType: hard
+
 "json5@npm:^1.0.1, json5@npm:^1.0.2":
   version: 1.0.2
   resolution: "json5@npm:1.0.2"
@@ -17393,6 +17401,17 @@ __metadata:
   languageName: node
   linkType: hard
 
+"nock@npm:^13.5.4":
+  version: 13.5.4
+  resolution: "nock@npm:13.5.4"
+  dependencies:
+    debug: "npm:^4.1.0"
+    json-stringify-safe: "npm:^5.0.1"
+    propagate: "npm:^2.0.0"
+  checksum: 10c0/9ca47d9d7e4b1f4adf871d7ca12722f8ef1dc7d2b9610b2568f5d9264eae9f424baa24fd9d91da9920b360d641b4243e89de198bd22c061813254a99cc6252af
+  languageName: node
+  linkType: hard
+
 "node-abort-controller@npm:^3.0.1":
   version: 3.1.1
   resolution: "node-abort-controller@npm:3.1.1"
@@ -19493,6 +19512,13 @@ __metadata:
   languageName: node
   linkType: hard
 
+"propagate@npm:^2.0.0":
+  version: 2.0.1
+  resolution: "propagate@npm:2.0.1"
+  checksum: 10c0/01e1023b60ae4050d1a2783f976d7db702022dbdb70dba797cceedad8cfc01b3939c41e77032f8c32aa9d93192fe937ebba1345e8604e5ce61fd3b62ee3003b8
+  languageName: node
+  linkType: hard
+
 "proxy-addr@npm:~2.0.7":
   version: 2.0.7
   resolution: "proxy-addr@npm:2.0.7"