Add a new combined test

Author: michael-hawker

UnitTests/UnitTests.UWP/UI/Controls/Test_ConstrainedBox.Combined.cs

@@ -0,0 +1,93 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// 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.Linq;
+using System.Threading.Tasks;
+using Microsoft.Toolkit.Uwp;
+using Microsoft.Toolkit.Uwp.UI;
+using Microsoft.Toolkit.Uwp.UI.Controls;
+using Microsoft.Toolkit.Uwp.UI.Helpers;
+using Microsoft.VisualStudio.TestTools.UnitTesting;
+using Microsoft.VisualStudio.TestTools.UnitTesting.AppContainer;
+using Windows.Foundation;
+using Windows.UI.Xaml;
+using Windows.UI.Xaml.Controls;
+using Windows.UI.Xaml.Markup;
+
+namespace UnitTests.UWP.UI.Controls
+{
+    public partial class Test_ConstrainedBox : VisualUITestBase
+    {
+        [TestCategory("ConstrainedBox")]
+        [TestMethod]
+        public async Task Test_ConstrainedBox_Combined_All()
+        {
+            await App.DispatcherQueue.EnqueueAsync(async () =>
+            {
+                // We turn LayoutRounding off as we're doing between pixel calculation here to test.
+                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"">
+    <Grid x:Name=""ParentGrid"" Width=""100"" Height=""100"">
+      <controls:ConstrainedBox x:Name=""ConstrainedBox"" ScaleX=""0.9"" ScaleY=""0.9""
+                               MultipleX=""32"" MultipleY=""32""
+                               AspectRatio=""3:1""
+                               UseLayoutRounding=""False""
+                               HorizontalAlignment=""Stretch"" VerticalAlignment=""Stretch"">
+        <Border HorizontalAlignment=""Stretch"" VerticalAlignment=""Stretch"" Background=""Red""/>
+      </controls:ConstrainedBox>
+    </Grid>
+</Page>") as FrameworkElement;
+
+                Assert.IsNotNull(treeRoot, "Could not load XAML tree.");
+
+                // Initialize Visual Tree
+                await SetTestContentAsync(treeRoot);
+
+                var grid = treeRoot.FindChild("ParentGrid") as Grid;
+
+                var panel = treeRoot.FindChild("ConstrainedBox") as ConstrainedBox;
+
+                Assert.IsNotNull(panel, "Could not find ConstrainedBox in tree.");
+
+                // Force Layout calculations
+                panel.UpdateLayout();
+
+                var child = panel.Content as Border;
+
+                Assert.IsNotNull(child, "Could not find inner Border");
+
+                // Check Size
+                Assert.AreEqual(64, child.ActualWidth, 0.01, "Actual width does not meet expected value of 64");
+                Assert.AreEqual(21.333, child.ActualHeight, 0.01, "Actual height does not meet expected value of 21.33");
+
+                // Check inner Positioning, we do this from the Grid as the ConstainedBox also modifies its own size
+                // and is hugging the child.
+                var position = grid.CoordinatesTo(child);
+
+                Assert.AreEqual(18, position.X, 0.01, "X position does not meet expected value of 18");
+                Assert.AreEqual(39.333, position.Y, 0.01, "Y position does not meet expected value of 39.33");
+
+                // Update Aspect Ratio and Re-check
+                panel.AspectRatio = new AspectRatio(1, 3);
+
+                // Wait to ensure we've redone layout
+                await CompositionTargetHelper.ExecuteAfterCompositionRenderingAsync(() =>
+                {
+                    // Check Size
+                    Assert.AreEqual(21.333, child.ActualWidth, 0.01, "Actual width does not meet expected value of 21.33");
+                    Assert.AreEqual(64, child.ActualHeight, 0.01, "Actual height does not meet expected value of 64");
+
+                    // Check inner Positioning, we do this from the Grid as the ConstainedBox also modifies its own size
+                    // and is hugging the child.
+                    position = grid.CoordinatesTo(child);
+
+                    Assert.AreEqual(39.333, position.X, 0.01, "X position does not meet expected value of 39.33");
+                    Assert.AreEqual(18, position.Y, 0.01, "Y position does not meet expected value of 18");
+                });
+            });
+        }
+    }
+}

UnitTests/UnitTests.UWP/UnitTests.UWP.csproj

@@ -221,6 +221,7 @@
     <Compile Include="UI\Controls\Test_BladeView.cs" />
     <Compile Include="UI\Controls\Test_ConstrainedBox.AspectRatio.cs" />
     <Compile Include="UI\Controls\Test_ConstrainedBox.Multiple.cs" />
+    <Compile Include="UI\Controls\Test_ConstrainedBox.Combined.cs" />
     <Compile Include="UI\Controls\Test_ImageEx.cs" />
     <Compile Include="UI\Controls\Test_RadialGauge.cs" />
     <Compile Include="UI\Controls\Test_TextToolbar_Localization.cs" />