Mongoid support cleanup

moving test specific == override part of the test models and not part of the Compatibility module included in all Mongoid docs. Made sure that nothing in devise itself uses this == between 2 different models, its purely for assert_equal

lib/devise/orm/mongoid.rb

@@ -34,10 +34,6 @@ module Devise
           end
           super(validate)
         end
-
-        def ==(other)
-          other.is_a?(self.class) && _id == other._id
-        end
       end
     end
   end

test/rails_app/app/mongoid/admin.rb

@@ -11,4 +11,9 @@ class Admin
     options.delete(:order) if options[:order] == "id"
     super options
   end
+  
+  # overwrite equality (because some devise tests use this for asserting model equality) 
+  def ==(other)
+    other.is_a?(self.class) && _id == other._id
+  end
 end

test/rails_app/app/mongoid/user.rb

@@ -13,4 +13,9 @@ class User
     options.delete(:order) if options[:order] == "id"
     super options
   end
+  
+  # overwrite equality (because some devise tests use this for asserting model equality) 
+  def ==(other)
+    other.is_a?(self.class) && _id == other._id
+  end
 end