I am trying to test the two way data binding of ngModel with the following code, but when I am running my test I always get: Expected '' to be 'test@wikitude.com', 'searchQuery property changes after text input'.
Maybe it has something to do with the searchField.dispatchEvent
part, but so far I couldn't figure out why the test is not changing the textContent of my displayField
. The project was built with angular-cli": "1.0.0-beta.15
. I tried to follow this guide but so far had no luck. Would be nice if you could help me make my test pass.
This is my component:
import { Component, OnInit } from '@angular/core';
@Component({
selector: 'app-search',
templateUrl: './search.component.html',
styleUrls: ['./search.component.css']
})
export class SearchComponent implements OnInit {
searchQuery: string;
active: boolean = false;
onSubmit(): void {
this.active = true;
}
}
This is my component template:
<input id="name" [(ngModel)]="searchQuery" placeholder="customer">
<h2><span></span></h2>
And here are is my spec:
/* tslint:disable:no-unused-variable */
import {TestBed, async, ComponentFixture, tick} from '@angular/core/testing';
import { SearchComponent } from './search.component';
import {CommonModule} from "@angular/common";
import {FormsModule} from "@angular/forms";
import {By} from "@angular/platform-browser";
describe('Component: SearchComponent', () => {
let component: SearchComponent;
let fixture: ComponentFixture<SearchComponent>;
beforeEach(() => {
TestBed.configureTestingModule({
declarations: [SearchComponent],
imports: [
CommonModule,
FormsModule
]
});
fixture = TestBed.createComponent(SearchComponent);
component = fixture.componentInstance;
});
it('should bind the search input to the searchQuery variable', () => {
const searchInputText: string = 'test@wikitude.com';
const searchField: HTMLInputElement = fixture.debugElement.query(By.css('input')).nativeElement;
const displayField: HTMLElement = fixture.debugElement.query(By.css('span')).nativeElement;
searchField.value = searchInputText;
searchField.dispatchEvent(new Event('input'));
fixture.detectChanges();
expect(displayField.textContent).toBe(searchInputText, 'searchQuery property changes after text input');
});
});
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