Add more generator unit tests

components/DependencyPropertyGenerator/CommunityToolkit.DependencyPropertyGenerator.Tests/Test_DependencyPropertyGenerator.cs

@@ -2699,4 +2699,180 @@ public partial string? Name
 
         CSharpGeneratorTest<DependencyPropertyGenerator>.VerifySources(source, ("MyNamespace.MyControl.g.cs", result), languageVersion: LanguageVersion.CSharp13);
     }
+
+    [TestMethod]
+
+    // The 'string' and 'object' types are special
+    [DataRow("string", "string", "null")]
+    [DataRow("string", "string?", "null")]
+    [DataRow("object", "object", "null")]
+    [DataRow("object", "object?", "null")]
+
+    // Well known WinRT primitive types
+    [DataRow("int", "int", "null")]
+    [DataRow("byte", "byte", "null")]
+    [DataRow("sbyte", "sbyte", "null")]
+    [DataRow("short", "short", "null")]
+    [DataRow("ushort", "ushort", "null")]
+    [DataRow("uint", "uint", "null")]
+    [DataRow("long", "long", "null")]
+    [DataRow("ulong", "ulong", "null")]
+    [DataRow("char", "char", "null")]
+    [DataRow("float", "float", "null")]
+    [DataRow("double", "double", "null")]
+
+    // Well known WinRT struct types
+    [DataRow("Matrix3x2", "Matrix3x2", "null")]
+    [DataRow("Matrix4x4", "Matrix4x4", "null")]
+    [DataRow("Plane", "Plane", "null")]
+    [DataRow("Quaternion", "Quaternion", "null")]
+    [DataRow("Vector2", "Vector2", "null")]
+    [DataRow("Vector3", "Vector3", "null")]
+    [DataRow("Vector4", "Vector4", "null")]
+    [DataRow("Point", "Point", "null")]
+    [DataRow("Rect", "Rect", "null")]
+
+    // Well known WinRT enum types
+    [DataRow("Visibility", "Visibility", "null")]
+
+    // Nullable types, they're always just 'null'
+    [DataRow("int?", "int?", "null")]
+    [DataRow("byte?", "byte?", "null")]
+    [DataRow("char?", "char?", "null")]
+    [DataRow("long?", "long?", "null")]
+    [DataRow("float?", "float?", "null")]
+    [DataRow("double?", "double?", "null")]
+    [DataRow("DateTimeOffset?", "DateTimeOffset?", "null")]
+    [DataRow("TimeSpan?", "TimeSpan?", "null")]
+    [DataRow("Guid?", "Guid?", "null")]
+    [DataRow("KeyValuePair<int, float>?", "KeyValuePair<int, float>?", "null")]
+
+    // Custom struct types
+    [DataRow("MyStruct", "MyStruct", "new PropertyMetadata(default(MyStruct))", "public struct MyStruct { public int X; }")]
+    [DataRow("MyStruct", "MyStruct", "new PropertyMetadata(default(MyStruct))", "public struct MyStruct { public string X { get; set; }")]
+
+    // Custom enum types
+    [DataRow("MyEnum", "MyEnum", "new PropertyMetadata(default(MyEnum))", "public enum MyEnum { A, B, C }")]
+    public void SingleProperty_MultipleTypes_WithNoCaching_DefaultValueIsOptimized(
+        string dependencyPropertyType,
+        string propertyType,
+        string propertyMetadataExpression,
+        string? typeDefinition = "")
+    {
+        string source = $$"""
+            using Windows.UI.Xaml;
+            using CommunityToolkit.WinUI;
+
+            #nullable enable
+
+            namespace MyNamespace;
+
+            {{typeDefinition}}
+
+            public partial class MyControl : DependencyObject
+            {
+                [GeneratedDependencyProperty]
+                public partial {{propertyType}} Name { get; set; }
+            }
+            """;
+
+        string result = $$"""
+            // <auto-generated/>
+            #pragma warning disable
+            #nullable enable
+
+            namespace MyNamespace
+            {
+                /// <inheritdoc cref="MyControl"/>
+                partial class MyControl
+                {
+                    /// <summary>
+                    /// The backing <see cref="global::Windows.UI.Xaml.DependencyProperty"/> instance for <see cref="Name"/>.
+                    /// </summary>
+                    [global::System.CodeDom.Compiler.GeneratedCode("CommunityToolkit.WinUI.DependencyPropertyGenerator", <ASSEMBLY_VERSION>)]
+                    public static readonly global::Windows.UI.Xaml.DependencyProperty NameProperty = global::Windows.UI.Xaml.DependencyProperty.Register(
+                        name: "Name",
+                        propertyType: typeof({{dependencyPropertyType}}),
+                        ownerType: typeof(MyControl),
+                        typeMetadata: {{propertyMetadataExpression}});
+
+                    /// <inheritdoc/>
+                    [global::System.CodeDom.Compiler.GeneratedCode("CommunityToolkit.WinUI.DependencyPropertyGenerator", <ASSEMBLY_VERSION>)]
+                    [global::System.Diagnostics.DebuggerNonUserCode]
+                    [global::System.Diagnostics.CodeAnalysis.ExcludeFromCodeCoverage]
+                    public partial {{propertyType}} Name
+                    {
+                        get
+                        {
+                            object? __boxedValue = GetValue(NameProperty);
+
+                            OnNameGet(ref __boxedValue);
+
+                            {{propertyType}} __unboxedValue = ({{propertyType}})__boxedValue;
+
+                            OnNameGet(ref __unboxedValue);
+
+                            return __unboxedValue;
+                        }
+                        set
+                        {
+                            OnNameSet(ref value);
+
+                            object? __boxedValue = value;
+
+                            OnNameSet(ref __boxedValue);
+
+                            SetValue(NameProperty, __boxedValue);
+
+                            OnNameChanged(value);
+                        }
+                    }
+
+                    /// <summary>Executes the logic for when the <see langword="get"/> accessor <see cref="Name"/> is invoked</summary>
+                    /// <param name="propertyValue">The raw property value that has been retrieved from <see cref="NameProperty"/>.</param>
+                    /// <remarks>This method is invoked on the boxed value retrieved via <see cref="GetValue"/> on <see cref="NameProperty"/>.</remarks>
+                    [global::System.CodeDom.Compiler.GeneratedCode("CommunityToolkit.WinUI.DependencyPropertyGenerator", <ASSEMBLY_VERSION>)]
+                    partial void OnNameGet(ref object? propertyValue);
+
+                    /// <summary>Executes the logic for when the <see langword="get"/> accessor <see cref="Name"/> is invoked</summary>
+                    /// <param name="propertyValue">The unboxed property value that has been retrieved from <see cref="NameProperty"/>.</param>
+                    /// <remarks>This method is invoked on the unboxed value retrieved via <see cref="GetValue"/> on <see cref="NameProperty"/>.</remarks>
+                    [global::System.CodeDom.Compiler.GeneratedCode("CommunityToolkit.WinUI.DependencyPropertyGenerator", <ASSEMBLY_VERSION>)]
+                    partial void OnNameGet(ref {{propertyType}} propertyValue);
+
+                    /// <summary>Executes the logic for when the <see langword="set"/> accessor <see cref="Name"/> is invoked</summary>
+                    /// <param name="propertyValue">The boxed property value that has been produced before assigning to <see cref="NameProperty"/>.</param>
+                    /// <remarks>This method is invoked on the boxed value that is about to be passed to <see cref="SetValue"/> on <see cref="NameProperty"/>.</remarks>
+                    [global::System.CodeDom.Compiler.GeneratedCode("CommunityToolkit.WinUI.DependencyPropertyGenerator", <ASSEMBLY_VERSION>)]
+                    partial void OnNameSet(ref object? propertyValue);
+
+                    /// <summary>Executes the logic for when the <see langword="set"/> accessor <see cref="Name"/> is invoked</summary>
+                    /// <param name="propertyValue">The property value that is being assigned to <see cref="Name"/>.</param>
+                    /// <remarks>This method is invoked on the raw value being assigned to <see cref="Name"/>, before <see cref="SetValue"/> is used.</remarks>
+                    [global::System.CodeDom.Compiler.GeneratedCode("CommunityToolkit.WinUI.DependencyPropertyGenerator", <ASSEMBLY_VERSION>)]
+                    partial void OnNameSet(ref {{propertyType}} propertyValue);
+
+                    /// <summary>Executes the logic for when <see cref="Name"/> has just changed.</summary>
+                    /// <param name="value">The new property value that has been set.</param>
+                    /// <remarks>This method is invoked right after the value of <see cref="Name"/> is changed.</remarks>
+                    [global::System.CodeDom.Compiler.GeneratedCode("CommunityToolkit.WinUI.DependencyPropertyGenerator", <ASSEMBLY_VERSION>)]
+                    partial void OnNameChanged({{propertyType}} newValue);
+
+                    /// <summary>Executes the logic for when <see cref="Name"/> has just changed.</summary>
+                    /// <param name="e">Event data that is issued by any event that tracks changes to the effective value of this property.</param>
+                    /// <remarks>This method is invoked by the <see cref="global::Windows.UI.Xaml.DependencyProperty"/> infrastructure, after the value of <see cref="Name"/> is changed.</remarks>
+                    [global::System.CodeDom.Compiler.GeneratedCode("CommunityToolkit.WinUI.DependencyPropertyGenerator", <ASSEMBLY_VERSION>)]
+                    partial void OnNamePropertyChanged(global::Windows.UI.Xaml.DependencyPropertyChangedEventArgs e);
+
+                    /// <summary>Executes the logic for when any dependency property has just changed.</summary>
+                    /// <param name="e">Event data that is issued by any event that tracks changes to the effective value of this property.</param>
+                    /// <remarks>This method is invoked by the <see cref="global::Windows.UI.Xaml.DependencyProperty"/> infrastructure, after the value of any dependency property has just changed.</remarks>
+                    [global::System.CodeDom.Compiler.GeneratedCode("CommunityToolkit.WinUI.DependencyPropertyGenerator", <ASSEMBLY_VERSION>)]
+                    partial void OnPropertyChanged(global::Windows.UI.Xaml.DependencyPropertyChangedEventArgs e);
+                }
+            }
+            """;
+
+        CSharpGeneratorTest<DependencyPropertyGenerator>.VerifySources(source, ("MyNamespace.MyControl.g.cs", result), languageVersion: LanguageVersion.CSharp13);
+    }
 }