How to test an Angular service? class ElementRef<T = any> { constructor(nativeElement: T) nativeElement: T } Description link An ElementRef is backed by a render-specific element. The safest way to get the injected service, the way that always works , is to get it from the injector of the component-under-test . Im using Angular4. querySelector . When working with Angular, we often use @ViewChild decorator to get access to specific instance from the containing element and call nativeElement to get the HTMLElement for DOM accessing. descendants of baseElement. Use this API as the last resort when direct access to DOM is needed. Tried that it also didnt work as well. Cookies concent notice . It is used with ViewChild to get the HTML element from the component class. Let's now see how to safely access and manipulate our DOM elements using Renderer2 combined to ElementRef but without using the nativeElement interface for direct access. Many Git commands accept both tag and branch names, so creating this branch may cause unexpected behavior. Which versions of Angular, Material, OS, browsers are affected? ngAfterViewInit () is used to handle any additional initialization tasks. methods return a live HTMLCollection. Los selectores especificados no son vlidos. A NodeList is most often a static collection. To learn more, see our tips on writing great answers. See Document.querySelector() for additional examples of the proper Can I use this tire + rim combination : CONTINENTAL GRAND PRIX 5000 (28mm) + GT540 (24mm). For example, let's create a directive named makeRed that makes the background color red. This is because the queryselector works only in the browser. our feed for updates. Notice how the "div span" selector still successfully matches the Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. https://github.com/adamlacombe/Shadow-. Angular adds a directive to the injector of the element to which it is applied. you can simply access all methods and properties of native elements. Yes both of your test cases would run on non-browser. More detailed info can be found here on offical Angular doc. (or slightly worse, expose nativeElement) 5 soyuka commented on Sep 28, 2018 Yes it's not that easy and really hackish. Like this. This is our good old way to access an id (not a class). A component property is bound to HTML template only after calling detectChanges () method of ComponentFixture . Codeigniter and Bootstrap from the early stage. selector). Here's the stub file contents: import { of } from 'rxjs'; /* The default behavior is to test that the user clicked 'OK' in the dialog. Example: If you add a