diff --git a/backend/globalConfig.json b/backend/globalConfig.json
index 4f59459b4..f09aa418d 100644
--- a/backend/globalConfig.json
+++ b/backend/globalConfig.json
@@ -1 +1 @@
-{"mongoUri":"mongodb://127.0.0.1:43943/jest?","mongoDBName":"jest"}
+{ "mongoUri": "mongodb://127.0.0.1:43943/jest?", "mongoDBName": "jest" }
diff --git a/backend/routers/auth.router.test.js b/backend/routers/auth.router.test.js
new file mode 100644
index 000000000..8be2688ff
--- /dev/null
+++ b/backend/routers/auth.router.test.js
@@ -0,0 +1,213 @@
+// Set up mocks for User model and controller
+jest.mock('../controllers/user.controller');
+jest.mock('../controllers/email.controller');
+jest.mock('../models/user.model');
+// Set up mocks for middleware
+jest.mock('../middleware', () => ({
+  AuthUtil: {
+    verifyCookie: jest.fn((req, res, next) => next()),
+  },
+  verifyUser: {
+    checkDuplicateEmail: jest.fn((req, res, next) => next()),
+    isAdminByEmail: jest.fn((req, res, next) => next()),
+  },
+  verifyToken: {
+    isTokenValid: jest.fn((req, res, next) => next()),
+  },
+}));
+// Set up mocks for authApiValidator
+jest.mock('../validators/user.api.validator', () => ({
+  validateCreateUserAPICall: jest.fn((req, res, next) => next()),
+  validateSigninUserAPICall: jest.fn((req, res, next) => next()),
+}));
+
+// Import User model and controller
+const { User } = require('../models/user.model');
+const { UserController, EmailController } = require('../controllers');
+
+// Import auth router
+const express = require('express');
+const supertest = require('supertest');
+const authRouter = require('../routers/auth.router');
+const { verifyToken, verifyUser, AuthUtil } = require('../middleware');
+const { authApiValidator } = require('../validators');
+
+// Create a new Express application for testing
+const testapp = express();
+// Use body parser to extract params in API calls
+testapp.use(express.json());
+testapp.use('/api/auth', authRouter);
+const request = supertest(testapp);
+
+
+describe('Unit tests for auth router', () => {
+  // Clear all mocks after each test
+  afterEach(() => {
+    jest.clearAllMocks();
+  });
+
+  // Mocker user for test
+  const mockUser = {
+    id: 1,
+    name: {
+      firstName: 'mock',
+      lastName: 'user',
+    },
+    email: 'mockUser@test.com',
+    accessLevel: 'user',
+  };
+
+  describe('CREATE', () => {
+    it('should sign up new user with POST /api/auth/signup', async (done) => {
+      // Mock implementation of UserController.createUser
+      UserController.createUser.mockImplementationOnce((req, res) => {
+        res.status(201).send({ message: 'User created successfully' });
+      });
+
+      // Mock POST API call
+      const response = await request.post('/api/auth/signup').send({
+        name: {
+          firstName: mockUser.firstName,
+          lastName: mockUser.lastName,
+        },
+        email: mockUser.email.toLowerCase(),
+      });
+
+      // Tests
+      expect(authApiValidator.validateCreateUserAPICall).toHaveBeenCalled();
+      expect(verifyUser.checkDuplicateEmail).toHaveBeenCalled();
+      expect(UserController.createUser).toHaveBeenCalled();
+      expect(response.status).toBe(201);
+      expect(response.body).toEqual({ message: 'User created successfully' });
+
+      // Marks completion of tests
+      done();
+    });
+
+    it('should sign in existing user with POST /api/auth/signin', async (done) => {
+      // Mock implementation for UserController.signin
+      const jsonToken = 'mockedToken';
+      const email = mockUser.email.toLowerCase();
+      const auth_origin = 'web';
+      const cookie = 'mockedCookie';
+      const headers = {
+        origin: 'http://localhost:3000',
+      };
+
+      UserController.signin.mockImplementation((req, res) => {
+        // Set a cookie in the response
+        res.cookie('token', cookie, { httpOnly: true });
+
+        // Set custom headers in the response
+        res.set('origin', headers.origin);
+
+        EmailController.sendLoginLink(
+          req.body.email,
+          req.body.auth_origin,
+          mockUser.name.firstName,
+          jsonToken,
+          cookie,
+          headers.origin,
+        );
+
+        res.status(200).send('Signin successful');
+      });
+
+      // Mock implementation for EmailController.sendLoginLink
+      EmailController.sendLoginLink.mockImplementation(() => {
+        console.log('Mocked EmailController.sendLoginLink called');
+      });
+
+      const response = await request.post('/api/auth/signin').send({
+        email: email,
+        auth_origin: auth_origin,
+      });
+
+      // Tests
+      expect(authApiValidator.validateSigninUserAPICall).toHaveBeenCalled();
+      expect(verifyUser.isAdminByEmail).toHaveBeenCalled();
+      expect(UserController.signin).toHaveBeenCalled();
+      expect(EmailController.sendLoginLink).toHaveBeenCalledWith(
+        email,
+        auth_origin,
+        mockUser.name.firstName,
+        jsonToken,
+        cookie,
+        headers.origin,
+      );
+      expect(response.status).toBe(200);
+      // Verify that the cookie is set
+      expect(response.headers['set-cookie']).toBeDefined();
+      expect(response.headers['set-cookie'][0]).toContain(`token=${cookie}`);
+      expect(response.text).toBe('Signin successful');
+
+      // Marks completion of tests
+      done();
+    });
+
+    it('should verify sign in with POST /api/auth/verify-signin', async (done) => {
+      // Mock implementation for UserController.verifySignIn
+      UserController.verifySignIn.mockImplementation((req, res) => {
+        res.status(200).send(mockUser);
+      });
+
+      // Mock POST API call
+      const response = await request.post('/api/auth/verify-signin').send({
+        token: 'mockedToken',
+      });
+
+      // Tests
+      expect(verifyToken.isTokenValid).toHaveBeenCalled();
+      expect(UserController.verifySignIn).toHaveBeenCalled();
+      expect(response.status).toBe(200);
+      expect(response.body).toEqual(mockUser);
+
+      // Marks completion of tests
+      done();
+    });
+
+    it('should verify me with POST /api/auth/me', async (done) => {
+      // Mock implementation for UserController.verifyMe
+      UserController.verifyMe.mockImplementation((req, res) => {
+        res.status(200).send(mockUser);
+      });
+
+      // Mock POST API call
+      const response = await request.post('/api/auth/me').send({
+        token: 'mockedToken',
+      });
+
+      // Tests
+      expect(AuthUtil.verifyCookie).toHaveBeenCalled();
+      expect(UserController.verifyMe).toHaveBeenCalled();
+      expect(response.status).toBe(200);
+      expect(response.body).toEqual(mockUser);
+
+      // Marks completion of tests
+      done();
+    });
+
+    it('should log out with POST /api/auth/logout', async (done) => {
+      const token = 'token';
+      // Mock implementation for UserController.logout
+      UserController.logout.mockImplementation((req, res) => {
+        res.clearCookie(token);
+        res.status(200).send('Successfully logged out.');
+      });
+  
+      // Mock POST API call
+      const response = await request.post('/api/auth/logout').set('Cookie', token);
+  
+      // Tests
+      expect(AuthUtil.verifyCookie).toHaveBeenCalled();
+      expect(UserController.logout).toHaveBeenCalled();
+      expect(response.headers['set-cookie'][0]).toMatch(/token=;/);
+      expect(response.status).toBe(200);
+      expect(response.text).toBe('Successfully logged out.');
+  
+      // Marks completion of tests
+      done();
+    });
+  });
+
+});