import { TestBed } from '@angular/core/testing';
import { provideRouter, ActivatedRouteSnapshot, RouterStateSnapshot, Router } from '@angular/router';
import { provideLocationMocks } from '@angular/common/testing';
import { authGuard } from './auth.guard';
import { AuthService } from './auth.service';

describe('authGuard', () => {
  let authService: jasmine.SpyObj<AuthService>;

  beforeEach(() => {
    authService = jasmine.createSpyObj('AuthService', ['isAuthenticated']);

    TestBed.configureTestingModule({
      providers: [
        provideRouter([]),
        provideLocationMocks(),
        { provide: AuthService, useValue: authService },
      ],
    });
  });

  it('redirects to login when not authenticated', () => {
    authService.isAuthenticated.and.returnValue(false);
    const route = {} as ActivatedRouteSnapshot;
    const state = { url: '/upload' } as RouterStateSnapshot;
    const result = TestBed.runInInjectionContext(() => authGuard(route, state));
    expect(result).toBeTruthy();
    const urlTree = result as ReturnType<Router['createUrlTree']>;
    expect(urlTree.toString()).toContain('/login');
  });
});