How do I test authentication guards in Angular CLI?

How do I test authentication guards in Angular CLI?

To test authentication guards in Angular, you can use Jasmine and TestBed to create a testing module.

Can you provide a code example for that?

Sure! Here's a simple example:

import { TestBed } from '@angular/core/testing';
import { RouterTestingModule } from '@angular/router/testing';
import { AuthGuard } from './auth.guard';

describe('AuthGuard', () => {
  let guard: AuthGuard;

  beforeEach(() => {
    TestBed.configureTestingModule({
      imports: [RouterTestingModule],
      providers: [AuthGuard]
    });
    guard = TestBed.inject(AuthGuard);
  });

  it('should be created', () => {
    expect(guard).toBeTruthy();
  });
});

What should I do if the guard fails?

If the guard fails, you can handle it by redirecting the user to a login page or showing an error message.

Are there any best practices for testing guards?

Yes, ensure to test both the allowed and denied scenarios, and mock any dependencies to isolate the guard's behavior.