class RuboCop::Formatter::JUnitFormatter

def add_failure_to(testcase, offenses, cop_name)
  # One failure per offense. Zero failures is a passing test case,
  # for most surefire/nUnit parsers.
  offenses.each do |offense|
    REXML::Element.new('failure', testcase).tap do |failure|
      failure.attributes['type'] = cop_name
      failure.attributes['message'] = offense.message
      failure.add_text(offense.location.to_s)
    end
  end
end