Revert "chore(test): remove conflicting using directive in ExampleSizerBaseTestClass"

This reverts commit 8ea71f7.

Author: michael-hawker

components/Sizers/tests/ExampleSizerBaseTestClass.cs

@@ -1 +1,74 @@
-<File content after removing the line 'using CommunityToolkit.WinUI.Helpers;'>
+// 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 CommunityToolkit.WinUI.Controls;
+using CommunityToolkit.Tooling.TestGen;
+using CommunityToolkit.Tests;
+using CommunityToolkit.WinUI.Controls.Automation.Peers;
+
+namespace SizersTests;
+
+[TestClass]
+public partial class ExampleSizerBaseTestClass : VisualUITestBase
+{
+    [TestMethod]
+    public async Task ShouldConfigureGridSplitterAutomationPeer()
+    {
+        await EnqueueAsync(() =>
+        {
+            const string automationName = "MyCustomAutomationName";
+            const string name = "Sizer";
+
+            var gridSplitter = new GridSplitter();
+            var gridSplitterAutomationPeer = FrameworkElementAutomationPeer.CreatePeerForElement(gridSplitter) as SizerAutomationPeer;
+
+            Assert.IsNotNull(gridSplitterAutomationPeer, "Verify that the AutomationPeer is SizerAutomationPeer.");
+
+            gridSplitter.Name = name;
+            Assert.IsTrue(gridSplitterAutomationPeer.GetName().Contains(name), "Verify that the UIA name contains the given Name of the GridSplitter (Sizer).");
+
+            gridSplitter.SetValue(AutomationProperties.NameProperty, automationName);
+            Assert.IsTrue(gridSplitterAutomationPeer.GetName().Contains(automationName), "Verify that the UIA name contains the customized AutomationProperties.Name of the GridSplitter.");
+        });
+    }
+
+    [UIThreadTestMethod]
+    public void PropertySizer_TestInitialBinding(PropertySizerTestInitialBinding testControl)
+    {
+        var propertySizer = testControl.FindDescendant<PropertySizer>();
+
+        Assert.IsNotNull(propertySizer, "Could not find PropertySizer control.");
+
+        // Set in XAML Page LINK: PropertySizerTestInitialBinding.xaml#L14
+        Assert.AreEqual(300, propertySizer.Binding, "Property Sizer not at expected initial value.");
+    }
+
+    [UIThreadTestMethod]
+    public void PropertySizer_TestChangeBinding(PropertySizerTestInitialBinding testControl)
+    {
+        var propertySizer = testControl.FindDescendant<PropertySizer>();
+        var navigationView = testControl.FindDescendant<MUXC.NavigationView>();
+
+        Assert.IsNotNull(propertySizer, "Could not find PropertySizer control.");
+        Assert.IsNotNull(navigationView, "Could not find NavigationView control.");
+
+        navigationView.OpenPaneLength = 200;
+
+        // Set in XAML Page LINK: PropertySizerTestInitialBinding.xaml#L14
+        Assert.AreEqual(200, propertySizer.Binding, "Property Sizer not at expected changed value.");
+    }
+
+    [UIThreadTestMethod]
+    public void ContentSizer_TestAutoLayout_NonZeroAndNaN(ContentSizerTestInitialLayout testControl)
+    {
+        var contentSizer = testControl.FindDescendant<ContentSizer>();
+        var textBlock = testControl.FindDescendant<TextBlock>();
+
+        Assert.IsNotNull(contentSizer, "Could not find ContentSizer control.");
+        Assert.IsNotNull(textBlock, "Could not find TextBlock control.");
+
+        Assert.IsTrue(textBlock.DesiredSize.Width > 5, "TextBlock desired size is too small.");
+        Assert.IsTrue(double.IsNaN(textBlock.Width), "TextBlock width should not be constrained and be NaN.");
+    }
+}