Exclude members of Object from TypeAccessor

A number of members from `Object` were being added to every `TypeAccessor.Members` list, such as `ToString()`. These don't serve a purpose in terms of our mapping libraries, and just add a lot of clutter to the cache. These can be removed.

This also allows us to fix a unit test which, previously, had to account for these items being inherited from object.

Author: JeremyCaney

OnTopic.Tests/TypeAccessorTest.cs

@@ -65,7 +65,7 @@ public void GetMembers_MixedValidity_ReturnsValidMembers() {
 
       var members               = _typeAccessor.GetMembers();
 
-      Assert.Equal(7+4, members.Count); // Includes four compliant members inherited from object
+      Assert.Equal(7, members.Count);
 
     }
 

OnTopic/Internal/Reflection/MemberAccessor.cs

@@ -246,6 +246,11 @@ internal void Validate(object target) {
     /// </remarks>
     internal static Func<MemberInfo, bool> IsValid => memberInfo => {
 
+      /*------------------------------------------------------------------------------------------------------------------------
+      | Skip members inherited from object
+      \-----------------------------------------------------------------------------------------------------------------------*/
+      if (memberInfo.DeclaringType == typeof(object)) return false;
+
       /*------------------------------------------------------------------------------------------------------------------------
       | Ensure type is property or method
       \-----------------------------------------------------------------------------------------------------------------------*/
@@ -254,8 +259,8 @@ internal void Validate(object target) {
       /*------------------------------------------------------------------------------------------------------------------------
       | Validate properties
       \-----------------------------------------------------------------------------------------------------------------------*/
-      if (memberInfo is PropertyInfo) return true;
       if (memberInfo.Name.Contains("et_", StringComparison.Ordinal)) return false;
+      if (memberInfo is PropertyInfo) return true;
 
       /*------------------------------------------------------------------------------------------------------------------------
       | Validate methods