This project gives you a uniform interface for whatever testing library has been loaded into your running Ruby process for Cucumber.
This is used automatically within cucumber-ruby to discover and autoload your required assertion library
You can use it manually (But you should never need to) if you want to use the same assertion library as Cucumber in your own code.
require 'multi_test'
my_tests = Object.new
MultiTest.extend_with_best_assertion_library(my_tests)