wtf rbx

Author: bf4

lib/active_model/serializer/lint.rb

@@ -39,8 +39,7 @@ def test_read_attribute_for_serialization
       # using absolute value since arity is:
       # -1 for alias :read_attribute_for_serialization :send
       #  1 for def read_attribute_for_serialization(name); end
-      #  2 for rbx because rbx
-      expected_arity = defined?(::Rubinius) ? 2 : 1
+      expected_arity = 1
       assert_equal resource.method(:read_attribute_for_serialization).arity.abs, expected_arity
     end