class Shoulda::Matchers::ActiveRecord::HaveDbColumnMatcher

def correct_limit?
  return true unless @options.key?(:limit)
  if matched_column.limit.to_s == @options[:limit].to_s
    true
  else
    @missing = "#{model_class} has a db column named #{@column} " <<
               "of limit #{matched_column.limit}, " <<
               "not #{@options[:limit]}."
    false
  end
end