import {ComponentFixture, TestBed, waitForAsync} from '@angular/core/testing';

import { FeedbackButtonComponent } from './feedback-button.component';
import {FormsModule} from '@angular/forms';
import {MatIconModule} from '@angular/material/icon';

describe('FeedbackButtonComponent', () => {

  beforeEach(waitForAsync(() => {
    TestBed.configureTestingModule({
      imports: [FormsModule, MatIconModule],
      declarations: [FeedbackButtonComponent]
    })
      .compileComponents();
  }));

  it('errors when no title is given', () => {
    const component = new FeedbackButtonComponent();
    expect(() => component.ngOnInit()).toThrowError('Please provide a title for the feedback button!');
  });

  it('renders when given a title', () => {
    const fixture = TestBed.createComponent(FeedbackButtonComponent);
    const component = fixture.componentInstance;
    component.title = 'someTitle';
    fixture.detectChanges();

    expect(fixture.nativeElement.innerHTML).toContain('someTitle');
  });

});