refactor(nav): add initial support for url in general, add integration w/ ng-router

packages/demos/angular/e2e/loading.e2e-spec.ts

@@ -0,0 +1,31 @@
+import { browser, ElementFinder } from 'protractor/built';
+
+import { LoadingPage } from './loading.po';
+import { sleep } from './utils/helpers';
+
+describe('Loading Page', () => {
+  let page: LoadingPage;
+
+  beforeEach(() => {
+    page = new LoadingPage();
+  });
+
+  it('should open page', async (done) => {
+    await page.navigateTo();
+    done();
+  });
+
+  it('should open the loading indicator, then close it', async (done) => {
+    const button = await page.getButton();
+    await sleep(100);
+    await button.click();
+    await sleep(500);
+    let loading = await page.getLoading();
+    expect(loading).toBeTruthy();
+    await sleep(1000);
+    loading = null;
+    loading = await page.getLoading();
+    expect(await loading.isPresent()).toBeFalsy();
+    done();
+  });
+});