Fix modifying default serialization options.

arangodb-net-standard.Test/Serialization/JsonNetApiClientSerializationTest.cs

@@ -126,6 +126,27 @@ public void Serialize_ShouldSucceed_WhenUsingDefaultOptions()
             Assert.Contains("InnerTestModel_PropertyToCheckIfCamelCase", jsonString);
         }
 
+        [Fact]
+        public void DefaultOptions_ShouldAllowValuesToBeModifiedInEachInstances()
+        {
+            var serialization1 = new JsonNetApiClientSerialization();
+            var serialization2 = new JsonNetApiClientSerialization();
+
+            AssertDefaultOptions(serialization1.DefaultOptions);
+
+            serialization1.DefaultOptions.UseCamelCasePropertyNames = true;
+            serialization1.DefaultOptions.IgnoreNullValues = false;
+            serialization1.DefaultOptions.UseStringEnumConversion = true;
+
+            Assert.True(serialization1.DefaultOptions.UseCamelCasePropertyNames);
+            Assert.False(serialization1.DefaultOptions.IgnoreNullValues);
+            Assert.True(serialization1.DefaultOptions.UseStringEnumConversion);
+
+            // Ensure options for each instances are independent
+
+            AssertDefaultOptions(serialization2.DefaultOptions);
+        }
+
         [Fact]
         public void Serialize_ShouldNotCamelCaseBindVars_WhenSerializingPostCursorBody()
         {
@@ -227,5 +248,12 @@ public void DeserializeFromStream_ShouldSucceed()
             Assert.Equal("myvalue", model.PropertyToCheckIfCamelCase);
             Assert.Equal("something", model.NullProperty);
         }
+
+        private void AssertDefaultOptions(ApiClientSerializationOptions options)
+        {
+            Assert.False(options.UseCamelCasePropertyNames);
+            Assert.True(options.IgnoreNullValues);
+            Assert.False(options.UseStringEnumConversion);
+        }
     }
 }

arangodb-net-standard/Serialization/ApiClientSerialization.cs

@@ -11,7 +11,7 @@ public abstract class ApiClientSerialization : IApiClientSerialization
         /// <summary>
         /// The default serialization options.
         /// </summary>
-        public virtual ApiClientSerializationOptions DefaultOptions => 
+        public virtual ApiClientSerializationOptions DefaultOptions { get; } =
             new ApiClientSerializationOptions(false, true, false);
 
         /// <summary>