import {TestBed, async, ComponentFixture, fakeAsync, flush} from '@angular/core/testing';
import {AppComponent} from './app.component';

describe('AppComponent', () => {

    let fixture: ComponentFixture<AppComponent>;
    let component: AppComponent;

    beforeEach(async(() => {
        TestBed.configureTestingModule({
            declarations: [
                AppComponent
            ],
        }).compileComponents();

        fixture = TestBed.createComponent(AppComponent);
        component = fixture.componentInstance;
    }));

    it('test case', fakeAsync(() => {
        console.log('called function');
        component.functionUnderTest();
        console.log('calling flush');

        flush();

        console.log('after flush');
    }));
});