module Capybara::Minitest::Assertions

def determine_subject(args)
  case args.first
  when Capybara::Session, Capybara::Node::Base, Capybara::Node::Simple
    [args.shift, args]
  when ->(arg) { arg.respond_to?(:to_capybara_node) }
    [args.shift.to_capybara_node, args]
  else
    [page, args]
  end
end