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Question

**● TestComponent › 应该创建

TypeError: Cannot read properties of undefined (reading 'userIds')
  2 | import { TestReducers } from '../reducers';
  3 |
> 4 | export const getuserIds = createSelector(TestReducers.TestFeatureSelector, state => state.userIds);**
    |                                                                                                       ^

describe('TestComponent', () => {
    let component: TestComponent;
    let fixture: ComponentFixture<TestComponent>;
>! let store: MockStore<State>;<kbd>your text</kbd>

    beforeEach(async () => {
        await TestBed.configureTestingModule({
            declarations: [TestComponent], // Replace with the actual declarations used in TestComponent.
            providers: [
                provideMockStore({
                    initialState: {
                        userIds: '1234'
                    },
                }),
            ],
        }).compileComponents();
        fixture = TestBed.createComponent(TestComponent);
        store = TestBed.inject(MockStore<State>);
        component = fixture.componentInstance;
        fixture.detectChanges();
    });

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

下面是我使用组件的选择器 userId = this.store.selectSignal(getUserIds);

以下是我的选择器 导出 const getUserIds = createSelector(TestReducers.TestFeatureSelector, state => state.userIds);