角度測試：無法解決存儲的所有參數：（？，？，？）

Question

我試圖將我的ngrx/Store聲明爲測試容器組件的spec文件。所以我導入存儲第一和beforeEach內執行以下操作：

 import {Store} from '@ngrx/store'; 

     beforeEach(async(() => { 
     TestBed.configureTestingModule({ 
       declarations: [NotificationsComponent, NotificationsDevicesComponent, 
       ToArrayPipe, OrderByDate, TimezoneFormatPipe], 
       providers: [{ provide: Store, useClass: Store }] 
      }) 
       .compileComponents().then(() => { 
       fixture = TestBed.createComponent(NotificationsComponent); 
       component = fixture.componentInstance; 
       el = fixture.debugElement; 

       fixture.detectChanges(); 
       }); 
      })); 

但我從標題中的錯誤不能解決店鋪的所有參數：（，，？？？）。

任何想法？

非常感謝

Answer 1

我已經使用ngrx和測試store

下面是我遵循的步驟 -

1. 進口StoreModule和Store

   import { StoreModule, Store } from '@ngrx/store'; 
   

2. 進口減速機我

   import { reducers } from './reducers'; 
   

3. 新增StoreModule我TestBed

   TestBed.configureTestingModule({ 
       imports: [ 
       StoreModule.forRoot({ 
        categories: reducers // My reducers 
       }) 
       ], 
   

4. 定義store變量

   let store: Store<CategoryState>; 
   

5. 初始化store

   beforeEach(() => { 
       store = TestBed.get(Store); 
   
       spyOn(store, 'dispatch').and.callThrough(); 
   
       fixture = TestBed.createComponent(CategoryListComponent); 
       component = fixture.componentInstance; 
       fixture.detectChanges(); 
   }); 
   

6. 之後，您可以在測試用例中使用store。