test(view-controller): adds isOverlay asserts

src/components/app/app.ts

@@ -4,7 +4,7 @@ import { Title, DOCUMENT } from '@angular/platform-browser';
 import { IonicApp } from './app-root';
 import * as Constants from './app-constants';
 import { ClickBlock } from './click-block';
-import { runInDev } from '../../util/util';
+import { runInDev, assert } from '../../util/util';
 import { Config } from '../../config/config';
 import { isNav, NavOptions, DIRECTION_FORWARD, DIRECTION_BACK } from '../../navigation/nav-util';
 import { MenuController } from './menu-controller';
@@ -226,6 +226,8 @@ export class App {
    * @hidden
    */
   present(enteringView: ViewController, opts: NavOptions, appPortal?: number): Promise<any> {
+    assert(enteringView.isOverlay, 'presented view controller needs to be an overlay');
+
     const portal = this._appRoot._getPortal(appPortal);
 
     // Set Nav must be set here in order to dimiss() work synchnously.

src/components/app/overlay-portal.ts

@@ -9,6 +9,7 @@ import { Keyboard } from '../../platform/keyboard';
 import { NavControllerBase } from '../../navigation/nav-controller-base';
 import { Platform } from '../../platform/platform';
 import { TransitionController } from '../../transitions/transition-controller';
+import { ViewController } from '../../navigation/view-controller';
 
 /**
  * @hidden
@@ -40,8 +41,10 @@ export class OverlayPortal extends NavControllerBase {
 
     // on every page change make sure the portal has
     // dismissed any views that should be auto dismissed on page change
-    app.viewDidLeave.subscribe((ev: any) => {
+    app.viewDidLeave.subscribe((view: ViewController) => {
-      !ev.isOverlay && this.dismissPageChangeViews();
+      if (!view.isOverlay) {
+        this.dismissPageChangeViews();
+      }
     });
   }
 

src/navigation/nav-controller-base.ts

@@ -1117,7 +1117,7 @@ export class NavControllerBase extends Ion implements NavController {
   dismissPageChangeViews() {
     for (let view of this._views) {
       if (view.data && view.data.dismissOnPageChange) {
-        view.dismiss().catch(null);
+        view.dismiss().catch(() => {});
       }
     }
   }