Updated tests for value provider changes

Author: jamesmcroft

Microsoft.Toolkit.Uwp.UI.Controls.Input/TokenizingTextBox/TokenizingTextBoxAutomationPeer.cs

@@ -91,7 +91,6 @@ protected override object GetPatternCore(PatternInterface patternInterface)
             return patternInterface switch
             {
                 PatternInterface.Value => this,
-                PatternInterface.Selection => this,
                 _ => base.GetPatternCore(patternInterface)
             };
         }

UnitTests/UnitTests.UWP/UI/Controls/Test_TokenizingTextBox_AutomationPeer.cs

@@ -24,6 +24,7 @@ await App.DispatcherQueue.EnqueueAsync(async () =>
             {
                 const string expectedAutomationName = "MyAutomationName";
                 const string expectedName = "MyName";
+                const string expectedValue = "Wor";
 
                 var items = new ObservableCollection<TokenizingTextBoxTestItem> { new() { Title = "Hello" }, new() { Title = "World" } };
 
@@ -43,6 +44,9 @@ await App.DispatcherQueue.EnqueueAsync(async () =>
                 // Asserts the automation peer name based on the element Name property.
                 tokenizingTextBox.Name = expectedName;
                 Assert.IsTrue(tokenizingTextBoxAutomationPeer.GetName().Contains(expectedName), "Verify that the UIA name contains the given Name of the TokenizingTextBox.");
+
+                tokenizingTextBox.Text = expectedValue;
+                Assert.IsTrue(tokenizingTextBoxAutomationPeer.Value.Equals(expectedValue), "Verify that the Value contains the given Text of the TokenizingTextBox.");
             });
         }