我不明白为什么我的单元测试会失败。我如何检查我的异步条件在存储调度后是否已经满足？我想检查3件事：
1/我的组件在分派后是真实的（条件设置为真后）
2/当模式为AddMode（'La note a été ajoutée）时，内部文本正确
3/当模式不是AddMode（'la note a été modifiée'）时，内部文本正确
我正在使用"fakeAsync"测试异步行为，但它没有按预期工作。
我错过了什么？
谢谢大家。
HTML代码：

<ng-container *ngIf="(isToastVisible$ | async)">
  <div *ngIf="(isAddMode| async)"
    class="position-fixed bottom-0 start-50 translate-middle-x p-3 border border-success bg-success text-white"
    style="z-index: 11">La note a été ajoutée !</div>

  <div *ngIf="!(isAddMode | async)"
    class="position-fixed bottom-0 start-50 translate-middle-x p-3 border border-success bg-success text-white"
    style="z-index: 11">La note a été modifiée !</div>
</ng-container>

类型脚本：

import { Component, OnInit } from '@angular/core';
import { select, Store } from '@ngrx/store';
import { Observable } from 'rxjs';
import { showAddEditNoteToast, AddEditNoteModalMode } from 'src/app/reducers/selectors/selectors';

@Component({
  selector: 'app-toast',
  templateUrl: './toast.component.html',
  styleUrls: ['./toast.component.scss']
})
export class ToastComponent implements OnInit {

  public isToastVisible$: Observable<boolean>;
  public isAddMode$: Observable<boolean>;

  constructor(
    private store: Store
  ) { }

  ngOnInit(): void {
    this.isToastVisible$ = this.store.pipe(select(showAddEditNoteToast));
    this.isAddMode$ = this.store.pipe(select(AddEditNoteModalMode));
  }
}

SPEC.TS:

import { ComponentFixture, fakeAsync, TestBed, tick } from '@angular/core/testing';
import { ToastComponent } from './toast.component';
import { MockStore, provideMockStore } from '@ngrx/store/testing';
import { Initialstate } from '../../app/reducers/index';
import { setFormMode, showAddEditNoteModal } from 'src/app/reducers/actions/actions';
import { By } from '@angular/platform-browser';

describe('ToastComponent', () => {
  let component: ToastComponent;
  let fixture: ComponentFixture<ToastComponent>;
  let store: MockStore;
  const initialState = Initialstate;

  beforeEach(async () => {
    await TestBed.configureTestingModule({
      declarations: [ToastComponent],
      providers: [
        provideMockStore({ initialState })
      ]
    })
      .compileComponents();
    store = TestBed.inject(MockStore)
  });

  beforeEach(() => {
    fixture = TestBed.createComponent(ToastComponent);
    component = fixture.componentInstance;
    fixture.detectChanges();
  });

  it('should create Toast component ', fakeAsync(() => {
    store.dispatch(showAddEditNoteModal({ showAddEditNoteModal: true }));
    tick();
    expect(component).toBeTruthy();
  }));

  it('should render text - La note a été ajoutée !', fakeAsync(() => {
    store.dispatch(setFormMode({ isAddMode: true }));
    fixture.detectChanges();
    tick();
    const text = fixture.debugElement.nativeElement;
    expect(text).toEqual('La note a été ajoutée !')
  }))
});