Enable object-mapping when source and destination is an enum

Before always the default value of the enum was returned from the Map function

framework/src/Volo.Abp.ObjectMapping/Volo/Abp/ObjectMapping/DefaultObjectMapper.cs

@@ -55,10 +55,13 @@ public class DefaultObjectMapper : IObjectMapper, ITransientDependency
                 return specificMapper.Map(source);
             }
 
-            var result = TryToMapCollection<TSource, TDestination>(scope, source, default);
-            if (result != null)
+            if (!(typeof(TSource).IsEnum || typeof(TSource).IsPrimitive))
             {
-                return result;
+                var result = TryToMapCollection<TSource, TDestination>(scope, source, default);
+                if (result != null)
+                {
+                    return result;
+                }
             }
         }
 

framework/test/Volo.Abp.AutoMapper.Tests/Volo/Abp/AutoMapper/AbpAutoMapperModule_Basic_Tests.cs

@@ -1,4 +1,5 @@
-using Microsoft.Extensions.DependencyInjection;
+using System;
+using Microsoft.Extensions.DependencyInjection;
 using Shouldly;
 using Volo.Abp.AutoMapper.SampleClasses;
 using Volo.Abp.ObjectMapping;
@@ -36,6 +37,13 @@ public class AbpAutoMapperModule_Basic_Tests : AbpIntegratedTest<AutoMapperTestM
         dto.Number.ShouldBe(42);
     }
 
+    [Fact]
+    public void Should_Map_Enum()
+    {
+        var dto = _objectMapper.Map<MyEnum, MyEnumDto>(MyEnum.Value3);
+        dto.ShouldBe(MyEnumDto.Value3);
+    }
+
     //[Fact] TODO: Disabled because of https://github.com/AutoMapper/AutoMapper/pull/2379#issuecomment-355899664
     /*public void Should_Not_Map_Objects_With_AutoMap_Attributes()
     {

framework/test/Volo.Abp.AutoMapper.Tests/Volo/Abp/AutoMapper/SampleClasses/MyEnum.cs

@@ -0,0 +1,8 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Volo.Abp.AutoMapper.SampleClasses;
+public enum MyEnum { Value1, Value2, Value3 };

framework/test/Volo.Abp.AutoMapper.Tests/Volo/Abp/AutoMapper/SampleClasses/MyEnumDto.cs

@@ -0,0 +1,8 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Volo.Abp.AutoMapper.SampleClasses;
+public enum MyEnumDto { Value1, Value2, Value3 };

framework/test/Volo.Abp.AutoMapper.Tests/Volo/Abp/AutoMapper/SampleClasses/MyMapProfile.cs

@@ -9,6 +9,8 @@ public class MyMapProfile : Profile
     {
         CreateMap<MyEntity, MyEntityDto>().ReverseMap();
 
+        CreateMap<MyEnum, MyEnumDto>().ReverseMap();
+
         CreateMap<ExtensibleTestPerson, ExtensibleTestPersonDto>()
             .MapExtraProperties(ignoredProperties: new[] { "CityName" });