chore: add existing type models

test/Riok.Mapperly.IntegrationTests/Mapper/StaticTestMapper.cs

@@ -3,6 +3,7 @@
 using Riok.Mapperly.Abstractions;
 using Riok.Mapperly.IntegrationTests.Dto;
 using Riok.Mapperly.IntegrationTests.Models;
+using Riok.Mapperly.IntegrationTests.Models.ExistingObjects;
 
 namespace Riok.Mapperly.IntegrationTests.Mapper
 {
@@ -91,6 +92,15 @@ public static void MapExistingList(List<string> src, List<int> dst)
 
         public static partial TTarget MapGeneric<TSource, TTarget>(TSource source);
 
+#if NET7_0_OR_GREATER
+        [MapDerivedType<ExistingObjectTypeA, ExistingObjectTypeADto>]
+        [MapDerivedType<ExistingObjectTypeB, ExistingObjectTypeBDto>]
+#else
+        [MapDerivedType(typeof(ExistingObjectTypeA), typeof(ExistingObjectTypeADto))]
+        [MapDerivedType(typeof(ExistingObjectTypeB), typeof(ExistingObjectTypeBDto))]
+#endif
+        public static partial void MapToDerivedExisting(ExistingObjectBase source, ExistingObjectBaseDto target);
+
         [MapEnum(EnumMappingStrategy.ByName)]
         public static partial TestEnumDtoByName MapToEnumDtoByName(TestEnum v);
 

test/Riok.Mapperly.IntegrationTests/Models/ExistingObjects/ExistingObjectBase.cs

@@ -0,0 +1,7 @@
+namespace Riok.Mapperly.IntegrationTests.Models.ExistingObjects
+{
+    public class ExistingObjectBase
+    {
+        public int Value { get; set; }
+    }
+}

test/Riok.Mapperly.IntegrationTests/Models/ExistingObjects/ExistingObjectBaseDto.cs

@@ -0,0 +1,7 @@
+namespace Riok.Mapperly.IntegrationTests.Models.ExistingObjects
+{
+    public class ExistingObjectBaseDto
+    {
+        public int Value { get; }
+    }
+}

test/Riok.Mapperly.IntegrationTests/Models/ExistingObjects/ExistingObjectTypeA.cs

@@ -0,0 +1,7 @@
+namespace Riok.Mapperly.IntegrationTests.Models.ExistingObjects
+{
+    public class ExistingObjectTypeA
+    {
+        public int ValueA { get; set; }
+    }
+}

test/Riok.Mapperly.IntegrationTests/Models/ExistingObjects/ExistingObjectTypeADto.cs

@@ -0,0 +1,7 @@
+namespace Riok.Mapperly.IntegrationTests.Models.ExistingObjects
+{
+    public class ExistingObjectTypeADto
+    {
+        public int ValueA { get; }
+    }
+}

test/Riok.Mapperly.IntegrationTests/Models/ExistingObjects/ExistingObjectTypeB.cs

@@ -0,0 +1,7 @@
+namespace Riok.Mapperly.IntegrationTests.Models.ExistingObjects
+{
+    public class ExistingObjectTypeB
+    {
+        public int ValueB { get; set; }
+    }
+}

test/Riok.Mapperly.IntegrationTests/Models/ExistingObjects/ExistingObjectTypeBDto.cs

@@ -0,0 +1,7 @@
+namespace Riok.Mapperly.IntegrationTests.Models.ExistingObjects
+{
+    public class ExistingObjectTypeBDto
+    {
+        public int ValueB { get; set; }
+    }
+}