import { TestBed } from '@angular/core/testing'; import { Subject } from 'rxjs'; import { AuthState } from '../../providers/auth.state'; describe('AuthState', () => { beforeEach(() => { TestBed.configureTestingModule({}); }); it('...should be created', () => { const AuthStateInterface = new Subject(); expect(AuthStateInterface).toBeTruthy(); }); afterAll(() => { TestBed.resetTestEnvironment(); }); });