From c5c1a1df65ccfdbdb0c9922a78da85103533420c Mon Sep 17 00:00:00 2001
From: Blaise Taylor <btaylor@bPolicySolutions.com>
Date: Wed, 25 Jan 2023 06:22:28 -0500
Subject: [PATCH] Enums do not require type maps. (#160)

---
 src/AutoMapper.Extensions.ExpressionMapping/TypeMapHelper.cs | 5 +++++
 .../CanMapExpressionWithListConstants.cs                     | 4 ----
 2 files changed, 5 insertions(+), 4 deletions(-)

diff --git a/src/AutoMapper.Extensions.ExpressionMapping/TypeMapHelper.cs b/src/AutoMapper.Extensions.ExpressionMapping/TypeMapHelper.cs
index 65df684..de99e10 100644
--- a/src/AutoMapper.Extensions.ExpressionMapping/TypeMapHelper.cs
+++ b/src/AutoMapper.Extensions.ExpressionMapping/TypeMapHelper.cs
@@ -28,9 +28,14 @@ public static bool CanMapConstant(this IConfigurationProvider config, Type sourc
                 return config.CanMapConstant(sourceType.GetElementType(), destType.GetElementType());
             else if (BothTypesAreEnumerable())
                 return config.CanMapConstant(sourceType.GetGenericArguments()[0], destType.GetGenericArguments()[0]);
+            else if (BothTypesAreEnums())
+                return true;
             else
                 return config.Internal().ResolveTypeMap(sourceType, destType) != null;
 
+            bool BothTypesAreEnums()
+                => sourceType.IsEnum && destType.IsEnum;
+
             bool BothTypesAreEnumerable()
             {
                 Type enumerableType = typeof(System.Collections.IEnumerable);
diff --git a/tests/AutoMapper.Extensions.ExpressionMapping.UnitTests/CanMapExpressionWithListConstants.cs b/tests/AutoMapper.Extensions.ExpressionMapping.UnitTests/CanMapExpressionWithListConstants.cs
index 8573476..c1ab754 100644
--- a/tests/AutoMapper.Extensions.ExpressionMapping.UnitTests/CanMapExpressionWithListConstants.cs
+++ b/tests/AutoMapper.Extensions.ExpressionMapping.UnitTests/CanMapExpressionWithListConstants.cs
@@ -48,7 +48,6 @@ public void Map_expression_with_constant_list_using_generic_list_dot_contains()
                 cfg =>
                 {
                     cfg.CreateMap<EntityModel, Entity>();
-                    cfg.CreateMap<SimpleEnum, SimpleEnumModel>();
                 }
             );
             config.AssertConfigurationIsValid();
@@ -79,7 +78,6 @@ public void Map_expression_with_constant_list_using_generic_enumerable_dot_conta
                 cfg =>
                 {
                     cfg.CreateMap<EntityModel, Entity>();
-                    cfg.CreateMap<SimpleEnum, SimpleEnumModel>();
                 }
             );
             config.AssertConfigurationIsValid();
@@ -110,7 +108,6 @@ public void Map_expression_with_constant_dictionary()
                 cfg =>
                 {
                     cfg.CreateMap<EntityModel, Entity>();
-                    cfg.CreateMap<SimpleEnum, SimpleEnumModel>();
                 }
             );
             config.AssertConfigurationIsValid();
@@ -142,7 +139,6 @@ public void Map_expression_with_constant_dictionary_mapping_both_Key_and_value()
                 {
                     cfg.CreateMap<EntityModel, Entity>();
                     cfg.CreateMap<Entity, EntityModel>();
-                    cfg.CreateMap<SimpleEnum, SimpleEnumModel>();
                 }
             );
             config.AssertConfigurationIsValid();