module Shoulda::Matchers::ActiveModel::Helpers

def default_error_message(type, options = {})
  model_name = options.delete(:model_name)
  attribute = options.delete(:attribute)
  instance = options.delete(:instance)
  RailsShim.generate_validation_message(
    instance,
    attribute.to_sym,
    type,
    model_name,
    options,
  )
end