Allow private methods to be performed in the background

lib/delayed/performable_method.rb

@@ -1,7 +1,7 @@
 module Delayed
   class PerformableMethod < Struct.new(:object, :method, :args)
     def initialize(object, method, args)
-      raise NoMethodError, "undefined method `#{method}' for #{object.inspect}" unless object.respond_to?(method)
+      raise NoMethodError, "undefined method `#{method}' for #{object.inspect}" unless object.respond_to?(method, true)
 
       self.object = object
       self.args   = args

spec/performable_method_spec.rb

@@ -22,9 +22,20 @@
     end
   end
 
-  it "should raise a ArgumentError if target method doesn't exist" do
+  it "should raise a NoMethodError if target method doesn't exist" do
     lambda {
       Delayed::PerformableMethod.new(Object, :method_that_does_not_exist, [])
     }.should raise_error(NoMethodError)
   end
+
+  it "should not raise NoMethodError if target method is private" do
+    clazz = Class.new do
+      def private_method
+      end
+      private :private_method
+    end
+    lambda {
+      Delayed::PerformableMethod.new(clazz.new, :private_method, [])
+    }.should_not raise_error(NoMethodError)
+  end
 end