fix ObjectMapping.PostInitialize not called during default object mapping creation

fix #51

Author: Michael Catanzariti

src/Dahomey.Cbor.Tests/Issues/Issue0051.cs

@@ -0,0 +1,62 @@
+using Dahomey.Cbor.Serialization;
+using Dahomey.Cbor.Serialization.Converters.Mappings;
+using System;
+using Xunit;
+
+namespace Dahomey.Cbor.Tests.Issues
+{
+    public class Issue0051
+    {
+        public class ObjectMappingConventionProvider : IObjectMappingConventionProvider
+        {
+            private readonly IObjectMappingConvention _objectMappingConvention;
+
+            public ObjectMappingConventionProvider()
+            {
+                _objectMappingConvention = new ObjectMappingConvention();
+            }
+
+            public IObjectMappingConvention GetConvention(Type type)
+            {
+                return _objectMappingConvention;
+            }
+        }
+
+        public class ObjectMappingConvention : IObjectMappingConvention
+        {
+            private readonly DefaultObjectMappingConvention _defaultObjectMappingConvention = new DefaultObjectMappingConvention();
+
+            public void Apply<T>(SerializationRegistry registry, ObjectMapping<T> objectMapping) where T : class
+            {
+                _defaultObjectMappingConvention.Apply<T>(registry, objectMapping);
+                objectMapping.SetOrderBy(m => m.MemberName);
+            }
+        }
+
+        public class MyObject
+        {
+            public int C { get; set; }
+            public int A { get; set; }
+            public int B { get; set; }
+        }
+
+        [Fact]
+        public void TestWrite()
+        {
+            CborOptions options = new CborOptions();
+            options.Registry.ObjectMappingConventionRegistry.RegisterProvider(new ObjectMappingConventionProvider());
+
+            var obj = new MyObject
+            {
+                C = 1,
+                A = 2,
+                B = 3
+            };
+
+            // {"A": 2, "B": 3, "C": 1}
+            const string hexBuffer = "A3614102614203614301";
+
+            Helper.TestWrite(obj, hexBuffer, null, options);
+        }
+    }
+}

src/Dahomey.Cbor/Serialization/Converters/Mappings/ObjectMappingRegistry.cs

@@ -69,6 +69,7 @@ private IObjectMapping CreateDefaultObjectMapping(Type type)
             if (objectMapping is IMappingInitialization mappingInitialization)
             {
                 mappingInitialization.Initialize();
+                mappingInitialization.PostInitialize();
             }
 
             return objectMapping;