test(user): add unit tests for UserUtils token generation and verification

Author: morningstar

src/api/v1/user/__test__/user.utils.test.ts

@@ -0,0 +1,49 @@
+// set all required env vars before importing modules that parse process.env
+process.env.PORT = process.env.PORT || '5000'
+process.env.HOST = process.env.HOST || 'localhost'
+process.env.APP_ENV = process.env.APP_ENV || 'test'
+process.env.DEBUG = 'true'
+process.env.Your_Name = 'test'
+process.env.YOUR_EMAIL = 'test@example.com'
+process.env.YOUR_PASSWORD = 'password'
+process.env.LOG_LEVEL = 'debug'
+process.env.GROQ_API_KEY = 'x'
+process.env.CORS_ENABLED = 'true'
+process.env.RATE_LIMIT_ENABLED = 'false'
+process.env.ENABLE_RATE_LIMITING = 'false'
+process.env.JWT_SECRET = 'test-secret'
+process.env.JWT_EXPIRATION = '7d'
+process.env.DB_HOST = 'localhost'
+process.env.DB_PORT = '27017'
+process.env.DB_NAME = 'testdb'
+process.env.DB_USER = 'user'
+process.env.DB_PASSWORD = 'pass'
+process.env.DB_CONNECTION_STRING = 'mongodb://localhost:27017/test'
+process.env.REDIS_HOST = 'localhost'
+process.env.REDIS_PORT = '6379'
+process.env.REDIS_PASSWORD = ''
+process.env.UPLOAD_DIR = '/tmp'
+process.env.TEMP_DIR = '/tmp'
+process.env.MAX_FILE_SIZE = '100000'
+process.env.ENCRYPTION_KEY = 'enc'
+process.env.SERVER_HMAC_SECRET = 'hmac'
+process.env.BACKEND_URL = 'http://localhost:5000'
+
+import UserUtils from '../user.utils'
+
+describe('UserUtils token helpers', () => {
+  test('generateToken and verifyToken roundtrip', () => {
+    const payload = { userId: 'abc123', email: 'a@b.com', role: 'user' }
+    const token = UserUtils.generateToken(payload)
+    const decoded = UserUtils.verifyToken(token)
+    expect(decoded).not.toBeNull()
+    expect(decoded?.email).toEqual(payload.email)
+    expect(decoded?._id).toEqual(payload.userId)
+    expect(decoded?.role).toEqual(payload.role)
+  })
+
+  test('verifyToken returns null for invalid token', () => {
+    const decoded = UserUtils.verifyToken('invalid.token')
+    expect(decoded).toBeNull()
+  })
+})