[英]How to test the ngrx store.select of an Observable, in angular5?
我想了解测试中缺少哪些内容来覆盖我正在处理的文件,以实现100%的覆盖率。 以下是需要注意的部分:
给定此打字稿文件:
constructor(
public store: Store<AppState>
) {}
ngOnInit(): void {
this.search$ = this.store.select(s => s.search);
}
而这个测试:
it('should start observing the search store', () => {
const search: any = {
data: {}
};
const state = Observable.of(search);
const store = jasmine.createSpyObj('store', ['select']);
store.select.and.returnValue(state);
component.store = store;
component.ngOnInit();
expect(component.search$).toBe(state);
});
当前的测试范围:
我想我所缺少的是一个非常愚蠢的东西,我盲目地看不到。 感谢您的提前帮助。
确实如@shaunhusain所建议的,这是该文件的修复程序
ngOnInit(): void {
this.fetch();
this.search$ = this.store.select(this.getStoreSearchData);
}
private getStoreSearchData(store: AppState): Search {
return store.search;
}
及其测试:
describe('#getStoreSearchData', () => {
it('should return the search store', () => {
const search: any = {
data: {}
};
const store = <AppState>{search: search};
const storeSearch = component['getStoreSearchData'](store);
expect(storeSearch).toEqual(search);
});
});
现在覆盖率已恢复到100%
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