module Minitest::Assertions

def assert_transitions_from(object, from_state, *args)
  options = args.first
  options[:on] ||= :default
  assert _transitions_from?(object, from_state, args, options),
        "Expected transition state to :#{options[:to]} from :#{from_state} on event :#{options[:on_event]}, (on :#{options[:on]})"
end