Fixture debugelement query by css returns undefined angular. example')); You can also filter by @Directive.
Fixture debugelement query by css returns undefined angular de = fixture. I think the problem is that debugElement. componentInstance; You're right that you can't just set the input, you also need to dispatch the 'input' event. query(By Mar 19, 2019 · You can use the debugElement to query your component: Example. Angular has various kinds of tests: Unit tests: This kind of test focuses on testing small, isolated pieces of code, such as components, services, or pipes, without relying on external resources. detectChanges() just after changing component. How Should I access the subscribe function? Any help would be appreciated. , debugElement. nativeElement. Oct 12, 2019 · This message means your variable filterBoxInput is null, looks like this line didn't workfixture. for me also fixture. Try Teams for free Explore Teams Nov 21, 2019 · I'm new to Angular unit tests and was looking at some tests written by others. Here is a test case for Jul 5, 2022 · I am trying to set an unitary test but the const clickedRow = debugElement. – Jan 23, 2020 · Here's the sample code of a unit test. The debugElement. ts file: Nov 15, 2024 · Unit testing is essential for maintaining high-quality Angular applications, especially with the framework’s frequent updates. import { async By using the ATB and fixtures we can inspect the component’s view through fixture. Mar 30, 2022 · I'm trying to start working with Unit Testing in my Ionic application, with Angular 6, Jasmine and Karma. actions > button Apr 14, 2020 · Probably @angular/compiler. Thank you. When I check if the mocked component is rendered via fixture. triggerEventHandler can raise any data-bound event by its event name Oct 16, 2023 · はじめに本記事は expect,it等の説明は記載しません。(記事が溢れてるから)caseに対するテストコードの書き方を順次備忘録として追記していきます。前提情報fixture = Tes… Sep 7, 2023 · From the test root component's DebugElement returned by fixture. triggerEventHandler with the "click" event name. I'm able to simulate the button click by grabbing it from the nativeElement and calling click(), but I'm curious why I can't get it from debugElement. It returns the label element as well. Here is a function I wrote earlier this evening to input text: function sendInput(text: string) { inputElement. Depending on your use case, you maybe want to test the behavior of a whole component, or test the state and it's transformations on its own. But when I try to reference the ViewChild it is always undefined. Jul 5, 2018 · let feedbackButton = fixture. Both methods expect a predicate, that is a function judging every element and returning true or false. queryAll(predicate) toman un predicado que filtra el subárbol del elemento fuente para igualar a DebugElement. css. The problem is that the addFileSubscription is never initialized. g. Try Teams for free Explore Teams Apr 21, 2018 · I am trying to count initial li and after fetching data from server (using unit test case), but I am getting Cannot read property 'length' of null My code: import { ComponentFixture, TestBed, asy Jun 5, 2020 · I have a next component with a form for sign-up writed on Angular 9. component. detectChanges(); return fixture. query(predicate) yDebugElement. header')). y. welcome')); I am even setting the value of welcome in the beforeEach() method and it still will not resolve to true on *ngIf="welcome" Aug 15, 2022 · spectator. createComponent (DashboardHeroComponent); comp = fixture. Before clicking the element, you should fill the users array and let angular run the change detection so that your anchor tag is available when you click on it. Angular ships with predefined predicate functions to query the DOM using familiar CSS selectors. If I use fixture. In this approach, using the async function from Angular testing. Input is for entering email Subscribe button with event handler Entering email and click over the button will make an api May 22, 2018 · Ask questions, find answers and collaborate at work with Stack Overflow for Teams. Asking for help, clarification, or responding to other answers. css('your-child-selector')) Share Follow Ask questions, find answers and collaborate at work with Stack Overflow for Teams. As Angular evolves, new testing techniques become necessary. query((de)=>{return de. hasY = this. debugElement) I am able to find the button in the chrome inspector. Jan 23, 2023 · To test a directive we typically create a dummy testing component so we can interact with the directive and test it’s effect on the component’s view, like so: Mar 28, 2019 · Ask questions, find answers and collaborate at work with Stack Overflow for Teams. Aug 28, 2018 · Following approches can be taken to get element in Unit Testing. Sep 7, 2023 · An attribute directive modifies the behavior of an element, component or another directive. Jun 14, 2018 · Hi all, I inspected the differences between the wallaby. Angular provides a robust testing framework integrated with tools like Jasmine and Karma to help developers write unit and Apr 19, 2020 · debugElement: fixture. 0. On the very next line, you try to access a call to the spy. host: { '[id]': "id" }) A good way is to use spyOn and spyOnProperty to instant mock the methods and properties as needed. Try Teams for free Explore Teams It has Angular properties and methods that abstract interaction with the native element. There are two ways you can test your state. css('h1')); But what I should to do when I want get element through class name. whenStable(); } Sep 7, 2018 · Ask questions, find answers and collaborate at work with Stack Overflow for Teams. directive (sut)), Any ideas on why this would be null? The text was updated successfully, but these errors were encountered: Dec 6, 2024 · Common Errors in Angular Testing 1. fixture. detectChanges after you dispatch the event. TestBed. You signed out in another tab or window. detectChanges(). Below are the button controls available in my angular template Jun 29, 2018 · None of the answers worked for me on Angular 11 so leaving my 2 cents here: const button: HTMLButtonElement = fixture. Try Teams for free Explore Teams Dec 17, 2016 · You signed in with another tab or window. Aug 15, 2017 · I'm submitting a (check one with "x") [ ] bug report => check the FAQ and search github for a similar issue or PR before submitting [x] support request => check the FAQ and search github for a similar issue before submitting [ ] feat Nov 15, 2018 · The reason you can't find it in the component is because you did not create it in the component. templateUrl and @Component. Good day! I was hoping I could get some help here. Next up we’ll look at how to can test asynchronous functions in Angular. Apr 2, 2021 · fixture. nativeElement are the same things. css('myelement')); But every once in a while, we want to test the behavior of a bit of UI that is actually appended to the html body. Jan 24, 2024 · I have an Angular standalone component that has a child standalone component. loginForm. . Setup. This example shows how to do it in one line of code. directive (sut)), Any ideas on why this would be null? The text was updated successfully, but these errors were encountered: Aug 15, 2022 · query and queryAll. You switched accounts on another tab or window. new-test-order-icd10-code-selection-modal. 0 version. directive(RouterLinkDirectiveStub)); Apr 23, 2021 · Ask questions, find answers and collaborate at work with Stack Overflow for Teams. Any thoughts? Angular Version: 17. createComponent (AppComponent); // テストされるComponentのインスタンス comp = fixture. Child Component instance May 2, 2018 · I want to write a simple unit test to check if button is disable when certain value is null or empty. inputArray is undefined in your component, the ngOnInit method will fail when attempting to access the roleID property. spyOnProperty expects 3 properties and you need to pass get or set as third property. css('jqxlistbox')), that will return the debugElement, and I can even inspect inside that thing's native element right at that breakpoint and see it has stuff in it, but no matter what I've tried Mar 24, 2018 · fixture. Jul 9, 2022 · I am trying to change the returned value of a mock defined as let userIdService: UserIdService; to "anonymous" from the default value I have set at the start of the test "123" , Testing compiled directive using TestBed. js 12. The "click" event binding responds by calling DashboardHeroComponent. g We can test inputs by just setting values on a component’s input properties. css('app-counter') would return. If you have an *ngIf on an element, you cannot get the element via -> fixture. On one line, you spy on a method. Second call fixture. We will test that button is clicked and value is set to property and bound to HTML. Its name reflects the way the directive is applied: as an attribute on a host element. y !== undefined Nov 5, 2024 · Editor’s note: This article was last reviewed and updated by Abiola Farounbi on 5 November 2024. A Signal Input is a simple function named input(). queryAll returns an array of all matching elements. and. Start a new project following the instructions in Setup. For example, we're using a bespoke dialog service that we call from within 'MyComponent', and want to verify that it was properly loaded with the correct contents. the inputArray property correctly, which can be done either by Sep 30, 2020 · This question has a similar title to mine however in my case I need to find an element based on innerHtml, not find an element of type <T> and look at its innerHtml. Assert label exists and outerText contains the given text using expect classes. On click of Set button, we are calling a function that sets a value to a component property. Please note that the text-area and the display element both should have an id (I chose text_area_1 and name_display) that makes it easier to query them using By. In general, it's recommended to use debugElement for interacting with the DOM in Angular tests, as it provides a higher level of abstraction that is specifically designed for testing Angular components. – Oct 12, 2019 · Unfortunately, the TestBed and related infrastructure that it looks like you're having trouble with is part of the Angular testing utilities and not part of Jasmine itself. When we query for FakeCounterComponent, we get a DebugElement that wraps the app-counter element – just as By. click('. css('mat-select') returns undefined, which also the debugger tells me. triggerEventHandler("change", event); This way you should not have to call component. By. [id]="id") Host property bindings (e. configureTestingModule ({ providers: appProviders, imports: [DashboardHeroComponent], }) fixture = TestBed. var test = fixture. This test calls the DebugElement. query(). So, it is better to check if subscription is formed or not before unsubscribe. queryAll() を使います。 検索結果は DebugElement として返却されます。 Nov 30, 2017 · Angular 7 get debugElement by ID. componentInstance: T: The instance of the root component class. const debugElement = fixture. css メソッドを使って、単一の要素を取得しています。ここでは class のセレクターを利用して、title が設定された span 要素を取得しています。 It has Angular properties and methods that abstract interaction with the native element. css('mat-checkbox')) but nothing changed. And then check to make sure that each one of your references in the TestBed belong to a valid angular entity. The 2nd argument should be the event object you created above:. To keep the implementation details (meaning call the actual function as well), you can use . directive (sut)), Any ideas on why this would be null? The text was updated successfully, but these errors were encountered: Dec 31, 2023 · get Button object using `DebugElement’ with By API; call the event handler function with `triggerEventHandler’ Finally, the Assert event handler function is called or not toHaveBeenCalled()' in theexpect` function # async button click event testing example in Angular. I have a loginPage, this calls an AuthService which in turn calls an HttpService, below I s Oct 29, 2016 · import { Subscription } from 'rxjs/Subscription'; All this means is that you can access the Subscription class from the ninjaFilesComponent class file. query returns a native DOM element or null in case no match was found. query iterates all debugElements and returns those found to be true via a predicate. 1. Just make sure to remove that extra comma. If you look at this line in your constructor:. clickable-link'); or ngMocks. The underlying DOM element at the root of the component. css('button')); When I do a console. Jun 10, 2022 · I am writing unit test with karma in Angular and i am struggling with weird problem. I was trying to test a mat-select component by this: Assert that mat-select has an option of 3 items(the ones that I have mocked) or at least assert that the mat-select has options. debugElement, I see that the mocked component is used. Jun 8, 2016 · I'm currently putting together some best practices for testing Angular 2 apps on a component level. You might have better luck asking on a more Angular specific forum for help on this issue. css ('. In combination with the previous lectures and the ability to test inputs and outputs we should now have … Jan 17, 2019 · If this. * @return {Mixed} - Either an Array where the first index is a boolean indi Apr 3, 2021 · Another issue is your triggerEventHandler. Sep 3, 2019 · I can't tell you what it is since you haven't included all of the code. Here are a few examples. username. DATA, which I suppose makes some changes in the view. Dec 4, 2017 · Ask questions, find answers and collaborate at work with Stack Overflow for Teams. querySelector() you can only find elements that are children of the component you created via TestBed. The text was updated successfully, but these errors were encountered: Mar 16, 2021 · It has relation with the way you ran Angular's change detection: In the first test, you run fixture. css('u1')) always throws an null. Introduction to Angular Testing. When testing if a component is being shown or not using ngIf I try to get the element (in this case you use, i. このページでは、最も役立つAngularテスト機能について説明します。 Angularテストユーティリティには、TestBed、ComponentFixture、およびテスト環境を制御するいくつかの関数が含まれています。 Oct 17, 2016 · I can get element with using the fixture. Aug 19, 2019 · You are getting null there because you are passing null as an argument in . I am trying to test output cancel of app-source-roll-history-form which is inside source-roll-history. triggerEventHandler('click', null); which I assume is a typo and should be . name: string: Read-Only. dialog. ngOnInit(){ const values = this. This map includes: Regular property bindings (e. createComponent(). The Angular DebugElement. From a given ComponentFixture, We have a debugElement to access DOM elements. 1. css('span')). debugElement. debugElement and also trigger a change detection run by calling fixture. I think, it should be enough that: fixture. El predicado es cualquier método que tome el DebugElement y devuelva un valor verdadero. May 2, 2018 · Child instance and it's native element can be accessed through parent's fixture. directive (HighlightDirective)); Dec 9, 2016 · If you were setting up the component in the beforeEach, making the beforeEach async, then calling fixture. @returns Promise<any> May 27, 2021 · // Query the DOM for the save button const cancelButton = fixture. Test success in angular 8 (ViewEngine) Description. hero')); heroEl = heroDe. Something like this fixture. debugElement, you can walk (and query) the fixture's entire element and component subtrees. Jun 22, 2018 · I am trying to run a basic unit test on a pretty simple component. query. There are two fast paths to getting started with unit testing. Jun 1, 2020 · I am making a very simple application which has one input box and a button. It creates an Angular testing module — a @NgModule class — that you configure with the configureTestingModule method to produce the module environment for the class you want to test. id==="someId"}); Dec 6, 2024 · Common Errors in Angular Testing 1. In the element below the only way to uniquely identify the div is based on its innerHtml. Please provide a stackblitz in order to reproduce your bug. dispatchEvent(new Event('input')); fixture. what I am trying to do is to validate text of button in my angular template. Start a new project with the Angular CLI. Provide details and share your research! But avoid …. queryAll(By. detectChanges (); By itself, that code isn’t terrible. debugElement by using fixture. ts. 20. Where you can see that focusin is the event that opens the "options". You can follow the below steps. It has Angular properties and methods that abstract interaction with the native element. 0 2. Instead of creating an HTML element tree, Angular creates a DebugElement tree that wraps the native elements for the runtime platform. The TestBed is the first and largest of the Angular testing utilities. May 20, 2024 · export class DebugNode {nativeNode get listeners {} get context {} get injector {} get parent {} get references {} get providerTokens {}} export class DebugElement extends DebugNode {get nativeElement (): any {} get name {} get properties {} get attributes {} get styles {} get classes {} get childNodes {} get children {} // Returns the first An attribute directive modifies the behavior of an element, component or another directive. Jasmine matchers May 15, 2018 · describe('ScopeEditorComponent', => { let component: ScopeEditorComponent; let fixture: ComponentFixture<ScopeEditorComponent>; let submitEl: DebugElement; let The preceding BannerComponent is defined with an inline template and inline css, specified in the @Component. This can be used to resume testing after events have triggered asynchronous activity or asynchronous change detection. They fulfill the same tasks as the @Input decorator: Property Binding. As we have learned, a DebugElement always wraps a native DOM element. query() コレクションであれば debugElement. onSelectingTestType(event);, because the component already calls that from the template (I guess). What seems cumbersome at first glance, in fact lifts the burden of the leaky DebugElement abstraction. During testing you will have to make sure to initialize your input, i. css ('button. styles properties respectively. detectChanges();, so I think it's not a good approach. query(By. This is HTML element generated in the DOM by Angular as specified in the tested component's template. Import RouterTestingModule and RouterLinkWithHref. Node. May 14, 2019 · I have a custom menu close on the Angular Material menu component and I want to test that, but it keeps failing and outputs "TypeError: Cannot read property 'closeMenu' of undefined" Spec file (te Feb 10, 2021 · In you test setup you are trying to set a value on a control that doesn't exist in your form. The element tag name, if it is an element. Apr 1, 2020 · I'm just describing the example you've already posted. Component の title に値を設定して、fixture. The text was updated successfully, but these errors were encountered: Apr 19, 2020 · debugElement: fixture. Property Description; nativeElement: any: Read-Only. Try Teams for free Explore Teams Jul 16, 2021 · Your test seems good but the issue is that spyOn just creates a spy on the method and returns undefined and you lose implementation details. Oct 5, 2018 · Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. nativeElement prints the root html component – Oct 15, 2019 · This is because when this test will run, your users array will be empty, and hence there will be no element in html with . nativeElement and fixture. See waitForAsync. The new Property Aug 1, 2020 · We are creating three test scenarios. nativeElement. Let's say you have a following directive: @Directive({ selector: '[my-directive]', }) class MyDirective { public Aug 14, 2019 · The question is why have to define in the spyOn the returnValuethe same return of undefined. triggerEventHandler can raise any data-bound event by its event name Jun 8, 2017 · fixture = TestBed. detectChanges after creating the component, would probably work with the code above without the need to call whenStable. debugElement はコンポーネント自体のHTML要素 <sample1></sample1> の参照です。 所有するHTML要素を検索するには、 単体の要素であれば debugElement. callThrough() Mar 8, 2024 · Signal Inputs. Many components specify external templates and external css with the @Component. 1 import { Component, OnInit, EventEmitter, Input, Output } from '@angular/core'; import { FormBuilder, Validators, FormGroup, Sep 21, 2016 · Saved searches Use saved searches to filter your results more quickly Enabling animations in a standalone Angular application; Exporting standalone components from Angular libraries; Lazy loading a feature using the Angular Router; Lazy loading a standalone component using the Angular Router; Providing dependencies in a standalone Angular feature; Testing a standalone attribute directive using the Angular testbed Dec 8, 2022 · I try to find a row by css and I do something like this: ngMocks. template and @Component. import { RouterTestingModule } from '@angular/router/testing'; import { RouterLinkWithHref } from '@angular/router'; Angular relies on the DebugElement abstraction to work safely across all supported platforms. Mar 7, 2018 · If you are writing tests in Jasmine, you can verify things multiple ways. I want to test the functionality of a button, but that element is not visible on the page because it's under an *ngIf. Feb 28, 2022 · Angular relies on the DebugElement abstraction to work safely across all supported platforms. content_copy // CSS 셀렉터나 디렉티브 토큰을 사용해서 DebugElement 를 쿼리할 수 있습니다. js files for the sample project and my own, and after adding this line, all was fine: compilerOptions. Component import { Component, OnInit } from '@angular/core'; import { Router } from '@angular/router'; import { CmsService } fr Nov 21, 2016 · You need to spyon the function you wanna check and the functions it depends on. Dec 31, 2023 · query. Nov 12, 2019 · Hi I am trying to write angular code for a component with an observable but I can't test the subscribe function. Upon testing I'm getting 2 failures Mar 28, 2019 · My suggestion is to remove . e. Reload to refresh your session. query (By. module = 'CommonJs'; Nov 30, 2017 · fixture. Jun 7, 2019 · DebugElement is a wrapper across native elements and tested component allowing test to run on all supported platforms. click('mat-checkbox') but it return undefined I already try fixture. g Jun 8, 2016 · I'm currently putting together some best practices for testing Angular 2 apps on a component level. value. triggerEventHandler('click', null); Dec 16, 2022 · To find an element by tag using the debugElement property of a component fixture in Angular, you can use the query method of the debugElement and pass it a By object with the css method and the tag name as arguments. debugElement. The last two are specifically looking at the value of the [ngClass] attribute, whereas the first two are just checking to see if a certain class was applied. triggerEventHandler can raise any data-bound event by its event name Feb 25, 2019 · Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. Apr 26, 2020 · This is because you have not subscribed in all the test cases and in that cases subscription is not formed yet. css ('h2')); const directive = fixture. const h2 = fixture. Both approaches install npm packages, files, and scripts pre-configured for applications built in their respective modalities. css('要素取得のクエリ'))となります。 nativeElementで取得すればDOM要素として取得できるので、テキストだったり、要素のdisabled状態だったりを取得することができます。 Function Details; waitForAsync: Runs the body of a test (it) or setup (beforeEach) function within a special async test zone. Note that it does not return a DebugElement. This my spec. example')); You can also filter by @Directive. controls. styleUrls properties respectively, as the following variant of Oct 19, 2016 · I am trying to run unit tests on my component which is an output for my router. 0 In our example, we have a button and on the click of the button, goToDetail() method is called with an id and this component is navigated to another component using /view-detail/' + id URL. query(By Sep 19, 2016 · To write a test case for routerLink. Get a promise that resolves when the fixture is stable. componentInstance; // ヒーローのDebugElementと要素を見つける heroDe = fixture. Jan 26, 2018 · Did you find any solution for this issue. I see the attempts to access elements three different ways: fixture. click(). query returns the first descendant element that meets a condition. 0 Angular relies on the DebugElement abstraction to work safely across all supported platforms. nativeElement; // 親 Los métodos DebugElement. css('[data-testid="store"]')) is null. Jul 7, 2021 · Like you said, you have to move this. css('. hasY after the initialization of this. : fakeAsync: Runs the body of a test (it) within a special fakeAsync test zone, enabling a linear control flow coding style. debugElement returns null whereas fixture. Thanks for using Jasmine! Yes, with the same result. I just don't understand why this doesn't work when it works when I do this line of code against finding an input html element in jasmine. This means in your case only children of the PopupDialogComponent. debugElement: DebugElement: The DebugElement associated with the root element of this component. spec. If I change the lookup in the test to the element as defined in the template (<jqxlistbox>) like so: let openListbox = fixture. query で要素を参照しています。 By. Jun 28, 2020 · I wish to test one method in my component, this method should open new website in new tab url to Google Maps. I have created a basic registration form which works correctly but I'm facing issues in testing. changeDetectorRef I'm writing an Angular2 test component and i've noticed this line in the tutorials: de = fixture. elementRef: ElementRef: The ElementRef for the element at the root of the component. I am also facing the same issue with Angular 4. nativeElement: any: The native element at the root of the component. Aug 15, 2022 · query returns a DebugElement or null in case no match was found. How can I get DebugElement Angular relies on the DebugElement abstraction to work safely across all supported platforms. After some testing I found an answer (at least for my code) and hope, that this is helpful to you as well: When I looked at the DOM, when the application is running, I noticed that the default value of the mat-select is inside this DOM structure: Aug 12, 2019 · I'm learning angular 8 and I'm using Karma for unit testing. What do you think will have invoked the spied method between those two lines? Jun 17, 2022 · With fixture. I tried to make a quick test in the example project of this repository to reproduce your issue, but I fail to do so. nativeElement) and if it should be shown I expect it to be truthy, otherwise falsy. I have stubbed the router and service used by the component and I am trying to pull the element using the fixture. Jun 8, 2018 · I am new to UI test cases. nativeElement; const component: MyGridComponent = debugElement. test-link selector. Try Teams for free Explore Teams Sep 14, 2016 · My method under test is the following: /** * Update properties when the applicant changes the payment term value. css('#filterBox-input')); and didn't find your input with the id #filterBox-input. I've seen a few tutorials query a fixture's NativeElement object for selectors and the like, e. Here are the most useful DebugElement members for testers, in approximate order of utility: Aug 20, 2020 · 要素の取得方法は基本的にはfixture. split(" "); this. I saw that #6599 it will be fixed but still i face the same issue now. my method: class OrganizationDetailsComponent { public goToMap(address: Setup. my-save-button')); // Click the save button cancelButton. length I got 1 element. css('#hello')) fixture. When using Spectator, you work directly with DOM element objects. Sep 20, 2017 · Current behavior. Gets a map of property names to property values for an element. In this… May 20, 2018 · @Adam's comment to previous answer led me to the mat-autocomplete component's own test, specially here. Signal Inputs arrived in Angular 17. Query method returns child elements using CSS selectors. setValue('[email protected]'); // username doesn't exisit Jan 7, 2020 · Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. I know I have a ngFor there, but even if I queryAll with a class The class of a mock component has: the same selector; the same @Inputs and @Outputs with alias support; templates with pure <ng-content> tags to allow transclusion; support for @ContentChild and @ContentChildren Nov 30, 2017 · fixture. The nativeElement property unwraps the DebugElement and returns the platform-specific element object. Please note that, you are trying to get this value before fixture. directive(MyGridComponent)); const nativeElement = debugElement. Below is my spec file: test. componentInstance; // queryは、fixtureのDOM全体の中から、引数で与えたelementを満たす最初のDom elementとマッチしたDebugElementを返す // Byでは、cssのselectorを生成している。 Basic Testing . log(fixture. click (); // Tell the test fixture to detect changes fixture. Apr 23, 2022 · Angular 13. May 10, 2019 · When testing the DOM representation of a @Component, you're able to query its nested elements via its fixture. May 14, 2020 · Hey! This seems like a novel problem with [innerHTML] and . When a element is inserted into DOM directly for performance reasons, I can't query it in tests using fixture. value = text; inputElement. We can test outputs by subscribing to an EventEmitters observable and storing the emitted values on local variables. Is this a regression? Yes. In my unit test I want to mock said child component. I would like to set the variable from *ngIf to be truthy in order to be able to display the data. css('h1')); de is defined as DebugElement type. component')); from beforeEach block. qpiajiakqhyghyotzikzesmorzssrkovutocsxrxwqybkedvemsfflspqxxtmfqkftqiibpd