projektarbeit_duelger_waldhauser_caliskan/software/Frontend/src/app/app.component.spec.ts

import { Location } from '@angular/common';
import { ComponentFixture, TestBed } from '@angular/core/testing';
import { MatMenuModule } from '@angular/material/menu';
import { MqttRequestService } from './Service/Mqtt/mqtt-request.service';
import { AppComponent } from './app.component';

describe('AppComponent', () => {
  let component: AppComponent;
  let fixture: ComponentFixture<AppComponent>;
  let mqttRequestServiceSpy: jasmine.SpyObj<MqttRequestService>;
  let locationStub: Partial<Location>;

  beforeEach(async () => {
    const mqttRequestServiceMock = jasmine.createSpyObj('MqttRequestService', ['someMethod']);

    locationStub = {
      path: () => '/home'
    };

    await TestBed.configureTestingModule({
      imports: [MatMenuModule],
      declarations: [AppComponent],
      providers: [
        { provide: MqttRequestService, useValue: mqttRequestServiceMock },
        { provide: Location, useValue: locationStub }
      ]
    }).compileComponents();
  });

  beforeEach(() => {
    fixture = TestBed.createComponent(AppComponent);
    component = fixture.componentInstance;

    mqttRequestServiceSpy = TestBed.inject(MqttRequestService) as jasmine.SpyObj<MqttRequestService>;

    fixture.detectChanges();
  });

  it('should create', () => {
    expect(component).toBeTruthy();
  });

  it('should set header to "Home" if the route is empty', () => {
    expect(component.header).toBe('Home');
  });

  it('should set header to the capitalized route value', () => {
    locationStub.path = () => '/about';
    const componentNew = new AppComponent(mqttRequestServiceSpy, locationStub as Location);

    expect(componentNew.header).toBe('About');
  });

  it('should update header when onMenuSelect is called', () => {
    component.onMenuSelect('Map');

    expect(component.header).toBe('Map');
  });
});