Fix enum value rename in EnumTypeExtension

src/HotChocolate/Core/src/Types/Types/EnumTypeExtension.cs

@@ -139,9 +139,22 @@ private void MergeValues(
                 }
                 else
                 {
+                    existingValue.Name = enumValue.Name;
+
+                    if (enumValue.Description is not null)
+                    {
+                        existingValue.Description = enumValue.Description;
+                    }
+
+                    if (enumValue.IsDeprecated)
+                    {
+                        existingValue.DeprecationReason = enumValue.DeprecationReason;
+                    }
+
                     existingValue.Ignore = enumValue.Ignore;
 
                     TypeExtensionHelper.MergeFeatures(enumValue, existingValue);
+                    TypeExtensionHelper.MergeConfigurations(enumValue.Tasks, existingValue.Tasks);
 
                     TypeExtensionHelper.MergeDirectives(
                         context,

src/HotChocolate/Core/test/Types.Tests/Types/EnumTypeExtensionTests.cs

@@ -133,6 +133,22 @@ public void EnumTypeExtension_Ignore_Fields()
         schema.ToString().MatchSnapshot();
     }
 
+    [Fact]
+    public void EnumTypeExtension_Rename_Value()
+    {
+        // act
+        var schema = SchemaBuilder.New()
+            .AddQueryType<DummyQuery>()
+            .AddType<FooType>()
+            .AddType<FooRenameTypeExtension>()
+            .Create();
+
+        // assert
+        var type = schema.Types.GetType<EnumType>("Foo");
+        Assert.True(type.TryGetRuntimeValue("TEST", out _));
+        Assert.False(type.TryGetRuntimeValue("BAR", out _));
+    }
+
     public class DummyQuery
     {
         public required string Foo { get; set; }
@@ -169,6 +185,16 @@ protected override void Configure(IEnumTypeDescriptor descriptor)
         }
     }
 
+    public class FooRenameTypeExtension
+        : EnumTypeExtension
+    {
+        protected override void Configure(IEnumTypeDescriptor descriptor)
+        {
+            descriptor.Name("Foo");
+            descriptor.Value(Foo.Bar).Name("TEST");
+        }
+    }
+
     public enum Foo
     {
         Bar,