class RuboCop::Cop::RSpec::ExpectOutput

def on_gvasgn(node)
  return unless inside_example_scope?(node)
  # rubocop:disable InternalAffairs/NodeDestructuring
  variable_name, _rhs = *node
  # rubocop:enable InternalAffairs/NodeDestructuring
  name = variable_name[1..-1]
  return unless name.eql?('stdout') || name.eql?('stderr')
  add_offense(node.loc.name, message: format(MSG, name: name))
end