Updates test framework and fixes assertions

Updates test framework from Fact to Test.

Updates tests to use Assert.That for improved readability and consistency.

Author: Keboo

tests/MaterialDesignThemes.UITests/WPF/AutoSuggestBoxes/AutoSuggestTextBoxTests.cs

@@ -197,7 +197,7 @@ public async Task AutoSuggestBox_KeysUpAndDown_WrapAround()
         await Assert.That(await suggestionListBox.GetSelectedIndex()).IsEqualTo(0);
     }
 
-    [Fact]
+    [Test]
     [Description("Issue 3845")]
     public async Task AutoSuggestBox_SelectingAnItem_SetsSelectedItem()
     {
@@ -217,12 +217,12 @@ public async Task AutoSuggestBox_SelectingAnItem_SetsSelectedItem()
 
         //Assert
         string? selectedItem = (await suggestBox.GetSelectedItem()) as string;
-        Assert.Equal("Bananas", selectedItem);
+        await Assert.That(selectedItem).IsEqualTo("Bananas");
 
-        static void AssertViewModelProperty(AutoSuggestBox autoSuggestBox)
+        static async Task AssertViewModelProperty(AutoSuggestBox autoSuggestBox)
         {
             var viewModel = (AutoSuggestTextBoxWithCollectionViewViewModel)autoSuggestBox.DataContext;
-            Assert.Equal("Bananas", viewModel.SelectedItem);
+            await Assert.That(viewModel.SelectedItem).IsEqualTo("Bananas");
         }
         await suggestBox.RemoteExecute(AssertViewModelProperty);
 

tests/MaterialDesignThemes.UITests/WPF/Theme/ThemeTests.cs

@@ -63,8 +63,8 @@ public async Task WhenUsingCustomColorThemeDictionary_AllBrushesApplied()
     [MatrixDataSource]
     public async Task BundledTheme_UsesSameColorsAsXamlResources(
         [Matrix("Light", "Dark")] string baseTheme,
-        [MatrixMethod<PrimaryColor>(nameof(PrimaryColors))] PrimaryColor primaryColor,
-        [MatrixMethod<SecondaryColor>(nameof(SecondaryColors))] SecondaryColor secondaryColor)
+        [MatrixMethod<ThemeTests>(nameof(PrimaryColors))] PrimaryColor primaryColor,
+        [MatrixMethod<ThemeTests>(nameof(SecondaryColors))] SecondaryColor secondaryColor)
     {
         IVisualElement<WrapPanel> bundledPanel = await Initialize($"""
             <materialDesign:BundledTheme BaseTheme="{baseTheme}"

tests/MaterialDesignThemes.UITests/WPF/UpDownControls/NumericUpDownTests.cs

@@ -222,7 +222,7 @@ public async Task NumericUpDown_WhenValueEqualsMinimum_DisableButtons(int value,
         recorder.Success();
     }
 
-    [Fact]
+    [Test]
     [Description("Issue 3827")]
     public async Task NumericUpDown_WhenBindingUpdateTriggerIsPropertyChanged_ItUpdatesBeforeLoosingFocus()
     {
@@ -241,12 +241,12 @@ public async Task NumericUpDown_WhenBindingUpdateTriggerIsPropertyChanged_ItUpda
         object? tag = await numericUpDown.GetTag();
 
         //Assert
-        Assert.Equal("4", tag?.ToString());
+        await Assert.That(tag?.ToString()).IsEqualTo("4");
 
         recorder.Success();
     }
 
-    [Fact]
+    [Test]
     [Description("Issue 3827")]
     public async Task NumericUpDown_WhenBindingUpdateTriggerIsLostFocus_ItDoesNotUpdateUntilItLoosesFocus()
     {
@@ -286,8 +286,8 @@ static int GetViewModelValue(NumericUpDown numericUpDown)
 
 
         //Assert
-        Assert.Equal("2", valueBeforeLostFocus.ToString());
-        Assert.Equal("4", valueAfterLostFocus.ToString());
+        await Assert.That(valueBeforeLostFocus.ToString()).IsEqualTo("2");
+        await Assert.That(valueAfterLostFocus.ToString()).IsEqualTo("4");
 
         recorder.Success();
     }