test(slides): add test to toggle the last slide with ngIf

references #6651

src/components/slides/test/intro/index.ts

@@ -19,6 +19,7 @@ class IntroPage {
   continueText: string = "Skip";
   startingIndex: number = 1;
   mySlideOptions;
+  showSlide: boolean = true;
 
   constructor(private nav: NavController) {
     this.mySlideOptions = {
@@ -42,6 +43,10 @@ class IntroPage {
     console.log("Slide move", slider);
   }
 
+  toggleLastSlide() {
+    this.showSlide = !this.showSlide;
+  }
+
   skip() {
     this.nav.push(MainPage);
   }

src/components/slides/test/intro/main.html

@@ -29,8 +29,9 @@
            <li>There is no step 3</li>
          </ol>
        </div>
+       <button (click)="toggleLastSlide()">Toggle Last Slide</button>
     </ion-slide>
-    <ion-slide>
+    <ion-slide *ngIf="showSlide">
       <h3>Any questions?</h3>
     </ion-slide>
   </ion-slides>