class Shoulda::ActiveRecord::Matchers::HaveDbColumnMatcher

def correct_limit?
  return true if @limit.nil?
  if matched_column.limit.to_s == @limit.to_s
    true
  else
    @missing = "#{model_class} has a db column named #{@column} " <<
               "of limit #{matched_column.limit}, " <<
               "not #{@limit}."
    false
  end
end