class Shoulda::Matchers::ActiveRecord::AssociationMatchers::OptionVerifier

def correct_for?(*args)
  expected_value, name, type = args.reverse
  if expected_value.nil?
    true
  else
    expected_value = type_cast(type, expected_value_for(name, expected_value))
    actual_value = type_cast(type, actual_value_for(name))
    expected_value == actual_value
  end
end