ConvertTo should copy default values as well

Author: mythz

src/ServiceStack.Text/AutoMappingUtils.cs

@@ -178,7 +178,7 @@ public static object ConvertTo(this object from, Type toType, bool skipConverter
                 return strDict.ToObjectDictionary().FromObjectDictionary(toType);
 
             var to = toType.CreateInstance();
-            return to.PopulateWithNonDefaultValues(from);
+            return to.PopulateWith(from);
         }
 
         public static MethodInfo GetImplicitCastMethod(Type fromType, Type toType)

tests/ServiceStack.Text.Tests/AutoMappingTests.cs

@@ -198,10 +198,37 @@ public class ModelWithIgnoredFields
     }
 
     public class ReadOnlyAttribute : AttributeBase { }
+    
+    [EnumAsInt]
+    public enum MyEnumAsInt
+    {
+        ZeroValue = 0,
+        OneValue = 1,
+        DefaultValue = 2,
+    };
+
+    class MyEnumAsIntSource
+    {
+        public MyEnumAsInt MyEnumAsInt { get; set; } = MyEnumAsInt.DefaultValue;
+    }
+
+    class MyEnumAsIntTarget
+    {
+        public MyEnumAsInt MyEnumAsInt { get; set; } = MyEnumAsInt.DefaultValue;
+    }
 
     [TestFixture]
     public class AutoMappingTests
     {
+        [Test]
+        public void Can_convert_Default_Enum_Values()
+        {
+            var from = new MyEnumAsIntSource { MyEnumAsInt = MyEnumAsInt.ZeroValue };
+            var to = from.ConvertTo<MyEnumAsIntTarget>();
+            
+            Assert.That(to.MyEnumAsInt, Is.EqualTo(from.MyEnumAsInt));
+        }
+        
         [Test]
         public void Does_populate()
         {