test: use zone with unit testing

No more yarn.

Author: NathanWalker

apps/nativescript-demo-ng/src/main.spec.ts

@@ -1,7 +1,16 @@
 import './polyfills';
+import '@nativescript/zone-js/dist/pre-zone-polyfills';
+
+// Zone JS is required by default for Angular itself
+import 'zone.js';
+
+// Add NativeScript specific Zone JS patches
+import '@nativescript/zone-js';
 import 'zone.js/testing';
 import { TestBed } from '@angular/core/testing';
 import { platformBrowserDynamicTesting } from '@angular/platform-browser-dynamic/testing';
 import { NativeScriptTestingModule } from '@nativescript/angular/testing';
 
-TestBed.initTestEnvironment(NativeScriptTestingModule, platformBrowserDynamicTesting(), { teardown: { destroyAfterEach: true } });
+TestBed.initTestEnvironment(NativeScriptTestingModule, platformBrowserDynamicTesting(), {
+  teardown: { destroyAfterEach: true },
+});