class RuboCop::Cop::RSpec::MatchArray

def check_populated_array(node)
  return if node.first_argument.percent_literal?
  add_offense(node) do |corrector|
    array_contents = node.arguments.flat_map(&:to_a)
    corrector.replace(
      node,
      "contain_exactly(#{array_contents.map(&:source).join(', ')})"
    )
  end
end