Updated Carousel tests to include new Visual UI test implementation.

Author: jamesmcroft

…trols/Carousel/CarouselAutomationPeer.cs …ayout/Carousel/CarouselAutomationPeer.csMicrosoft.Toolkit.Uwp.UI.Controls/Carousel/CarouselAutomationPeer.cs renamed to Microsoft.Toolkit.Uwp.UI.Controls.Layout/Carousel/CarouselAutomationPeer.cs Microsoft.Toolkit.Uwp.UI.Controls/Carousel/CarouselAutomationPeer.cs renamed to Microsoft.Toolkit.Uwp.UI.Controls.Layout/Carousel/CarouselAutomationPeer.cs

@@ -2,57 +2,98 @@
 // The .NET Foundation licenses this file to you under the MIT license.
 // See the LICENSE file in the project root for more information.
 
-using System.Collections.Generic;
-using System.Collections.ObjectModel;
-using System.Diagnostics;
 using System.Linq;
+using System.Threading.Tasks;
 using Windows.UI.Xaml.Automation;
-using Microsoft.Toolkit.Uwp.UI.Controls;
 using Microsoft.VisualStudio.TestTools.UnitTesting;
-using Microsoft.VisualStudio.TestTools.UnitTesting.AppContainer;
 using Windows.UI.Xaml.Automation.Peers;
+using Windows.UI.Xaml.Controls;
+using Windows.UI.Xaml.Markup;
 using Microsoft.Toolkit.Uwp.UI.Automation.Peers;
+using Microsoft.Toolkit.Uwp.Extensions;
+using Carousel = Microsoft.Toolkit.Uwp.UI.Controls.Carousel;
 
 namespace UnitTests.UWP.UI.Controls
 {
     [TestClass]
     [TestCategory("Test_Carousel")]
-    public class Test_Carousel
+    public class Test_Carousel : VisualUITestBase
     {
-        [UITestMethod]
-        public void ShouldConfigureCarouselAutomationPeer()
+        [TestMethod]
+        public async Task ShouldConfigureCarouselAutomationPeerAsync()
         {
-            const string automationName = "MyAutomationPhotoItems";
-            const string name = "MyPhotoItems";
+            await App.DispatcherQueue.EnqueueAsync(async () =>
+            {
+                var treeRoot = XamlReader.Load(@"<Page
+    xmlns=""http://schemas.microsoft.com/winfx/2006/xaml/presentation""
+    xmlns:x=""http://schemas.microsoft.com/winfx/2006/xaml""
+    xmlns:controls=""using:Microsoft.Toolkit.Uwp.UI.Controls""
+    xmlns:data=""using:UnitTests.UWP.UI.Controls"">
+    <Grid>
+        <controls:Carousel InvertPositive=""True"">
+            <controls:Carousel.EasingFunction>
+                <CubicEase EasingMode=""EaseOut"" />
+            </controls:Carousel.EasingFunction>
 
-            var items = new ObservableCollection<PhotoDataItem> { new PhotoDataItem { Title = "Hello" }, new PhotoDataItem { Title = "World" } };
-            var carousel = new Carousel { ItemsSource = items };
+            <controls:CarouselItem>
+                Hello
+            </controls:CarouselItem>
+            <controls:CarouselItem>
+                World
+            </controls:CarouselItem>
+         </controls:Carousel>
+    </Grid>
+</Page>") as Page;
 
-            var carouselAutomationPeer = FrameworkElementAutomationPeer.CreatePeerForElement(carousel) as CarouselAutomationPeer;
+                // This is based on the XAML above.
+                var expectedNumItems = 2;
+                var expectedSelectedItem = "World";
 
-            Assert.IsNotNull(carouselAutomationPeer, "Verify that the AutomationPeer is CarouselAutomationPeer.");
-            Assert.IsFalse(carouselAutomationPeer.CanSelectMultiple, "Verify that CarouselAutomationPeer.CanSelectMultiple is false.");
-            Assert.IsTrue(carouselAutomationPeer.IsSelectionRequired, "Verify that CarouselAutomationPeer.IsSelectionRequired is false.");
+                Assert.IsNotNull(treeRoot, "XAML for test failed to load");
 
-            carousel.SetValue(AutomationProperties.NameProperty, automationName);
-            Assert.IsTrue(carouselAutomationPeer.GetName().Contains(automationName), "Verify that the UIA name contains the given AutomationProperties.Name of the Carousel.");
+                await SetTestContentAsync(treeRoot);
 
-            carousel.Name = name;
-            Assert.IsTrue(carouselAutomationPeer.GetName().Contains(name), "Verify that the UIA name contains the given Name of the Carousel.");
-        }
+                var outerGrid = treeRoot.Content as Grid;
 
-        public class PhotoDataItem
-        {
-            public string Title { get; set; }
+                Assert.IsNotNull(outerGrid, "Couldn't find Page content.");
 
-            public string Category { get; set; }
+                var carousel = outerGrid.Children.FirstOrDefault() as Carousel;
 
-            public string Thumbnail { get; set; }
+                Assert.IsNotNull(carousel, "Couldn't find Target Carousel.");
 
-            public override string ToString()
-            {
-                return Title;
-            }
+                // Sets the selected item to "World" from the XAML above.
+                carousel.SelectedIndex = 1;
+
+                const string automationName = "MyAutomationPhotoItems";
+                const string name = "MyPhotoItems";
+
+                var carouselAutomationPeer =
+                    FrameworkElementAutomationPeer.CreatePeerForElement(carousel) as CarouselAutomationPeer;
+
+                Assert.IsNotNull(carouselAutomationPeer, "Verify that the AutomationPeer is CarouselAutomationPeer.");
+                Assert.IsFalse(carouselAutomationPeer.CanSelectMultiple, "Verify that CarouselAutomationPeer.CanSelectMultiple is false.");
+                Assert.IsTrue(carouselAutomationPeer.IsSelectionRequired, "Verify that CarouselAutomationPeer.IsSelectionRequired is true.");
+
+                carousel.SetValue(AutomationProperties.NameProperty, automationName);
+                Assert.IsTrue(carouselAutomationPeer.GetName().Contains(automationName), "Verify that the UIA name contains the given AutomationProperties.Name of the Carousel.");
+
+                carousel.Name = name;
+                Assert.IsTrue(carouselAutomationPeer.GetName().Contains(name), "Verify that the UIA name contains the given Name of the Carousel.");
+
+                var carouselItemAutomationPeers = carouselAutomationPeer.GetChildren().Cast<CarouselItemAutomationPeer>().ToList();
+                Assert.AreEqual(expectedNumItems, carouselItemAutomationPeers.Count);
+
+                for (var i = 0; i < carouselItemAutomationPeers.Count; i++)
+                {
+                    var peer = carouselItemAutomationPeers[i];
+                    Assert.AreEqual(i + 1, peer.GetPositionInSet());
+                    Assert.AreEqual(expectedNumItems, peer.GetSizeOfSet());
+                }
+
+                var selected = carouselItemAutomationPeers.FirstOrDefault(peer => peer.IsSelected);
+                Assert.IsNotNull(selected);
+                Assert.IsTrue(selected.GetName().Contains(expectedSelectedItem));
+            });
         }
     }
 }