the-tip-top-frontend/__tests__/middleware.test.ts

/**
 * Tests pour le middleware d'authentification
 */
import { NextRequest, NextResponse } from 'next/server';

// We need to mock the middleware module to test it
describe('Auth Middleware', () => {
  describe('Auth Routes Detection', () => {
    const authRoutes = ['/login', '/register'];

    it('should identify login as auth route', () => {
      const pathname = '/login';
      const isAuthRoute = authRoutes.some((route) => pathname.startsWith(route));
      expect(isAuthRoute).toBe(true);
    });

    it('should identify register as auth route', () => {
      const pathname = '/register';
      const isAuthRoute = authRoutes.some((route) => pathname.startsWith(route));
      expect(isAuthRoute).toBe(true);
    });

    it('should not identify home as auth route', () => {
      const pathname = '/';
      const isAuthRoute = authRoutes.some((route) => pathname.startsWith(route));
      expect(isAuthRoute).toBe(false);
    });

    it('should not identify dashboard as auth route', () => {
      const pathname = '/dashboard';
      const isAuthRoute = authRoutes.some((route) => pathname.startsWith(route));
      expect(isAuthRoute).toBe(false);
    });
  });

  describe('Token Detection', () => {
    it('should detect token from cookies', () => {
      const cookies = new Map([['auth_token', 'test-token']]);
      const token = cookies.get('auth_token');
      expect(token).toBe('test-token');
    });

    it('should detect token from authorization header', () => {
      const authHeader = 'Bearer test-token';
      const token = authHeader?.replace('Bearer ', '');
      expect(token).toBe('test-token');
    });

    it('should handle missing token', () => {
      const cookies = new Map();
      const token = cookies.get('auth_token');
      expect(token).toBeUndefined();
    });
  });

  describe('Redirect Logic', () => {
    it('should redirect authenticated users from login to home', () => {
      const isAuthRoute = true;
      const hasToken = true;
      const shouldRedirect = isAuthRoute && hasToken;
      expect(shouldRedirect).toBe(true);
    });

    it('should not redirect unauthenticated users from login', () => {
      const isAuthRoute = true;
      const hasToken = false;
      const shouldRedirect = isAuthRoute && hasToken;
      expect(shouldRedirect).toBe(false);
    });

    it('should not redirect authenticated users from non-auth routes', () => {
      const isAuthRoute = false;
      const hasToken = true;
      const shouldRedirect = isAuthRoute && hasToken;
      expect(shouldRedirect).toBe(false);
    });
  });

  describe('Matcher Config', () => {
    const matcherPattern = /^\/((?!_next\/static|_next\/image|favicon\.ico|.*\..*|public).*)/;

    it('should match root path', () => {
      expect('/'.match(matcherPattern)).toBeTruthy();
    });

    it('should match login path', () => {
      expect('/login'.match(matcherPattern)).toBeTruthy();
    });

    it('should match dashboard path', () => {
      expect('/dashboard'.match(matcherPattern)).toBeTruthy();
    });

    it('should not match static files', () => {
      expect('/_next/static/file.js'.match(matcherPattern)).toBeFalsy();
    });

    it('should not match image optimization', () => {
      expect('/_next/image'.match(matcherPattern)).toBeFalsy();
    });

    it('should not match favicon', () => {
      expect('/favicon.ico'.match(matcherPattern)).toBeFalsy();
    });

    it('should not match files with extensions', () => {
      expect('/image.png'.match(matcherPattern)).toBeFalsy();
      expect('/script.js'.match(matcherPattern)).toBeFalsy();
    });
  });
});