class RuboCop::Cop::Minitest::Focus

def on_send(node)
  return if node.receiver
  add_offense(node.loc.selector) do |corrector|
    range = if node.arguments.none?
              range_by_whole_lines(node.source_range, include_final_newline: true)
            else
              node.loc.selector.join(node.first_argument.source_range.begin)
            end
    corrector.remove(range)
  end
end