[ADF-2240] fix e2e and test in demo shell (#3035)

* fix e2e and test in demo shell

* test single run demo shell conf

* fix script e2e

* fix test lint problems

* remove async from nested test

* fix pdf test

* modify url load pdf strategy test

* SimpleChange import

* pdf viewer test fix

* remove force closing

* refactor pdf viewer
-remove promise approach
-add event rendered
-add destroy worker

* increment timeout

* use proxy files

* remove require

* fix viewer component test

* remove last require

* prefer use of done for txt viewer test

demo-shell/e2e/app.e2e-spec.ts

@@ -1,14 +1,14 @@
 import { MyappPage } from './app.po';
 
 describe('myapp App', () => {
-  let page: MyappPage;
+    let page: MyappPage;
 
-  beforeEach(() => {
-    page = new MyappPage();
-  });
+    beforeEach(() => {
+        page = new MyappPage();
+    });
 
-  it('should display message saying app works', () => {
-    page.navigateTo();
-    expect(page.getParagraphText()).toEqual('app works!');
-  });
+    it('should display toolbar', () => {
+        page.navigateTo();
+        expect(page.getToolbar()).toBeDefined();
+    });
 });