Unit testing component in Ionic 2 with Ionic's specific markup and elements

Within my Angular 2 component for an Ionic 2 app, I utilize Ionic's markup as shown below:

<ion-card>
    <h3>{{ rawcontent.name }}</h3>
    <p *ngIf="rawcontent.description">{{ rawcontent.description }}</p>
</ion-card>

The TypeScript file for the component looks something like this:

import { Component, Input } from '@angular/core';
import { NavController } from 'ionic-angular/';
import { Content } from '../../pages/content/content';

@Component({
  selector: 'content-detail',
  templateUrl: 'content-detail.html'
})
export class ContentDetailComponent {

  @Input('data') rawcontent: any = {};

  constructor(public nav: NavController) {
  }
  //other methods
}

I'm currently facing an issue while trying to write a unit test for it. The error message I received is:

'ion-card' is not a known element: 1. If 'ion-card' is an Angular component, then verify that it is part of this module. 2. If 'ion-card' is a Web Component then add "CUSTOM_ELEMENTS_SCHEMA" to the '@NgModule.schemas' of this component to suppress this message.

Since ion-card is an Angular component in this case, I am unsure about what steps to take next. I believe I need to modify my beforeEach setup by adding some configuration. Can anyone provide assistance?

beforeEach(() => TestBed.configureTestingModule({
    declarations: [ ContentDetailComponent ],
    providers: [
        { provide: NavController, useClass: NavMock }
    ]})
);

Answer №1

To utilize the ionicModule, it must be imported. Include this line in your configureTestingModule function:

  imports: [
  IonicModule,
  ],

Answer №2

For those looking to test their Ionic 2 applications, this blog provides a good starting point. Check out the Ionic 2 testing guide.

To properly configure your app with the Ionic module root, ensure you include the following code snippet in the beforeEach block:

 beforeEach(async(() => {

        TestBed.configureTestingModule({

            declarations: [MyApp]

            providers: [

            ],

            imports: [
                IonicModule.forRoot(MyApp)
            ]

        }).compileComponents();

    }));

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