import'rxjs/add/observable/of'; import { StockInventoryService } from'./stock-inventory.service'; TestBed.initTestEnvironment( BrowserDynamicTestingModule, platformBrowserDynamicTesting() );functioncreateRespons
outlet : defaultPlaceholder"></ng-container> import { Component, OnInit, Input, TemplateRef, AfterViewInit }from'@angular/core'import {LoadingService}from'./loading.service'import {Observable}from'rxjs'@Component({ selector:'loading', templateUrl:'./loading.component.html', styleUrls: ['./loa...
import'rxjs/add/observable/of'; import { StockInventoryService } from'./stock-inventory.service'; TestBed.initTestEnvironment( BrowserDynamicTestingModule, platformBrowserDynamicTesting() );functioncreateResponse(body) {returnObservable.of(newResponse(newResponseOptions({ body: JSON.stringify(body) })) ...
Testing a service with HTTP request The service we want to test against: import{Injectable}from"@angular/core";import{HttpClient,HttpParams}from"@angular/common/http";import{Observable}from"rxjs";import{map}from"rxjs/operators";import{Lesson}from"../model/lesson";import{Course}from"../model/co...
Finally, expose a public propertyproducts$, returning an observable array ofProductsfrom an HTTP request. publicproducts$=this.http.get<Product[]>(this.API); TypeScript The final code looks like this: import{inject,Injectable}from'@angular/core';import{HttpClient}from"@angular/common/http";export...
interface SpectatorRouting<C> extends Spectator<C> { /** * Simulates a route navigation by updating the Params, QueryParams and Data observable streams. */ triggerNavigation(options?: RouteOptions): void; /** * Updates the route params and triggers a route navigation. */ setRouteParam(name...
- This change may cause a breaking change in unit tests that are implicitly depending on a specific number and sequence of change detections in order for their assertions to pass. - This may break invalid calls to `TransferState` methods. ...
如果一个 Observable 是 map 自一个请求或者任何 lifecycle 里面需要 cancel/off/unsubscribe 的东西，在...
There are multiple ways to destroy an Observable and solve this issue, such as using the async pipe or annotations, or manually unsubscribing at the end of the component’s lifetime. Avoiding memory leaks should always be a consideration because they will cause a decrease in application ...
import{Injectable}from'@angular/core';import{HttpClient}from'@angular/common/http';import{Observable}from'rxjs';@Injectable({providedIn:'root'})exportclassSearchService{constructor(privatehttp:HttpClient){}getAll():Observable<Person[]>{returnthis.http.get<Person[]>('assets/data/people.json');}}exp...