chore: Merge pull request #998 from DocSvartz/fix-NonSelfCreation-Adapter

Detecting a type without public constructors as NotSelfCreation

Author: DocSvartz

src/Mapster.Tests/WhenMappingRecordRegression.cs

@@ -2,6 +2,7 @@
 using Shouldly;
 using System;
 using System.Collections.Generic;
+using System.Globalization;
 using System.Text.Json;
 using static Mapster.Tests.WhenExplicitMappingRequired;
 using static Mapster.Tests.WhenMappingDerived;
@@ -562,6 +563,23 @@ public void NotSelfCreationTypeMappingInContainingClassWithoutError()
             uriDest.Uri.ToString().ShouldBe("https://www.google.com/");
         }
 
+        /// <summary>
+        /// https://github.com/MapsterMapper/Mapster/issues/995
+        /// </summary>
+        [TestMethod]
+        public void TypeWithOutPublicCtorDetectAsNotSelfCreationType()
+        {
+            var src = new CultureInfo("fr-FR");
+
+            Should.NotThrow(()=>
+            {
+                //src.Adapt<CultureInfo>();
+                src.TextInfo.Adapt<TextInfo>();
+            });
+
+        }
+
+
         class SourceClassWithJsonDocument911
         {
             public required JsonDocument Json { get; init; }

src/Mapster/Utils/ReflectionUtils.cs

@@ -460,9 +460,11 @@ public static bool IsNotSelfCreation(this Type type)
                 return false;
             if(type.IsCollectionCompatible())
                 return false;
-
+            if (type.GetConstructors().Length == 0)
+                return true;
             if (type == typeof(Type) || type.BaseType == typeof(MulticastDelegate))
                 return true;
+            
 
             return type.GetFieldsAndProperties().All(it => (it.SetterModifier & (AccessModifier.Public | AccessModifier.NonPublic)) == 0);
         }