Trying to Use DataContractSerializer with

I have been trying to use a DataContractSerializer to serialize my data. The DataContractSerializer works, but the problem is the OnSerialized and OnDeserialized attributes, which are supposed to be called when you serialize a GameObject is not being called

 using System.Runtime.Serialization;
 
 public class SaveManager() {
     public static void SaveObject()
     {
         Stream s = File.Open("TestClass.xml", FileMode.Create);
         DataContractSerializer serializer = new DataContractSerializer(typeof(TestClass));
         TestClass test = new TestClass();
         formatter.Serialize(s, test);
     }
 }
 
 [DataContract]
 public class TestClass
 {
     [DataMember]
     int i = 1;
 
     [OnSerializing]
     void OnSerializing(StreamingContext ctx)
     {
         Debug.Log("This is called before serialization");
     }
 
     [OnSerialized]
     void OnSerialized(StreamingContext ctx)
     {
         Debug.Log("This is called after serialization");
     }
 
     [OnDeserializing]
     void OnDeserializing(StreamingContext ctx)
     {
         Debug.Log("This is called before deserialization");
         test();
     }
 
     [OnDeserialized]
     void OnDeserialized(StreamingContext ctx)
     {
         Debug.Log("This is called after deserialization");
         test();
     }
 }

The serialization works and the data is serialized into XML, but I want to be able to See the Debug messages in the Unity Console.

Links I used https://msdn.microsoft.com/en-us/library/system.runtime.serialization.onserializingattribute(v=vs.110).aspx