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   1 import { ComponentFixture, TestBed } from '@angular/core/testing';
   2 import { NotificationHeaderComponent } from './notification-header.component';
   3 import { NotificationService } from '../../../../shared/services/notification.service';
   4 import { BehaviorSubject } from 'rxjs';
   5
   6 describe('NotificationHeaderComponent', () => {
   7   let component: NotificationHeaderComponent;
   8   let fixture: ComponentFixture<NotificationHeaderComponent>;
   9   let notificationService: NotificationService;
  10   let muteStateSubject: BehaviorSubject<boolean>;
  11
  12   beforeEach(async () => {
  13     muteStateSubject = new BehaviorSubject<boolean>(false);
  14     await TestBed.configureTestingModule({
  15       declarations: [NotificationHeaderComponent],
  16       providers: [
  17         {
  18           provide: NotificationService,
  19           useValue: {
  20             muteState$: muteStateSubject.asObservable(),
  21             removeAll: jasmine.createSpy('removeAll'),
  22             suspendToasties: jasmine.createSpy('suspendToasties')
  23           }
  24         }
  25       ]
  26     }).compileComponents();
  27
  28     fixture = TestBed.createComponent(NotificationHeaderComponent);
  29     component = fixture.componentInstance;
  30     notificationService = TestBed.inject(NotificationService);
  31     fixture.detectChanges();
  32   });
  33
  34   it('should create', () => {
  35     expect(component).toBeTruthy();
  36   });
  37
  38   it('should initialize with default mute state', () => {
  39     expect(component.isMuted).toBe(false);
  40   });
  41
  42   it('should update mute state when subscription emits', () => {
  43     muteStateSubject.next(true);
  44     fixture.detectChanges();
  45     expect(component.isMuted).toBe(true);
  46   });
  47
  48   it('should emit dismissAll event and call removeAll on dismiss', () => {
  49     spyOn(component.dismissAll, 'emit');
  50
  51     component.onDismissAll();
  52
  53     expect(component.dismissAll.emit).toHaveBeenCalled();
  54     expect(notificationService.removeAll).toHaveBeenCalled();
  55   });
  56
  57   it('should toggle mute state', () => {
  58     component.isMuted = false;
  59     component.onToggleMute();
  60     expect(notificationService.suspendToasties).toHaveBeenCalledWith(true);
  61
  62     component.isMuted = true;
  63     component.onToggleMute();
  64     expect(notificationService.suspendToasties).toHaveBeenCalledWith(false);
  65   });
  66
  67   it('should unsubscribe on destroy', () => {
  68     spyOn(component['subs'], 'unsubscribe');
  69     component.ngOnDestroy();
  70     expect(component['subs'].unsubscribe).toHaveBeenCalled();
  71   });
  72 });