Trouble testing NS Angular 2 component


#1

I’m having issues doing a very simple component test in a NativeScript Angular 2 application. I can’t seem to just call “new Component()” and then test it like was shown in Nic Raboy’s tutorials. I’m not trying an implementation of the Angular 2 TestBed in order to gain access to the component. This doesn’t appear to be working either. Has anybody run into a similar problem or have any experience with this? Thanks!

Here is the component under test:

import { Component } from "@angular/core";

@Component({
    selector: "links",
    templateUrl: "./components/links/links.component.html"
})

export class LinksComponent {
    test = "test";

    public constructor() {
        
    }
}

And the test itself:

import "reflect-metadata";
import { LinksComponent } from "../../components/links/links.component";
import { ComponentFixture, TestBed } from '@angular/core/testing';

describe("Links Component", () => {

    let comp: LinksComponent;
    let fixture: ComponentFixture<LinksComponent>;

    beforeEach(() => {
        TestBed.configureTestingModule({
            declarations: [ LinksComponent ],
        });

        fixture = TestBed.createComponent(LinksComponent);

        comp = fixture.componentInstance;
    });

    it("will pass because the app is run on an ios device", () => {
        expect(comp.test).toEqual("test");
    })
});

The log output is:

NativeScript / 10.3 (10.3; iPhone)  ../../tests/components/links.spec.js at line 0 FAILED
	ReferenceError: Can't find variable: Zone
NativeScript / 10.3 (10.3; iPhone): Executed 1 of 0 (1 FAILED) (0 secs / 0 seNativeScript / 10.3 (10.3; iPhone): Executed 1 of 0 (1 FAILED) ERROR (0.008 secs / 0 secs)
CONSOLE LOG file:///app/tns_modules/nativescript-unit-test-runner/main-view-model.js:258:24: NSUTR: completeAck
May 11 16:16:43 --- last message repeated 1 time ---
CONSOLE LOG file:///app/tns_modules/nativescript-unit-test-runner/main-view-model.js:90:28: NSUTR-socket.io: io server disconnect
CONSOLE LOG file:///app/tns_modules/nativescript-unit-test-runner/main-view-model.js:151:24: NSUTR: disregarding second execution
Test run failed.