Testing without RSpec

[Jason Hsu, Rubyist]

Are there any good tutorials on testing a Rails app WITHOUT the aid of RSpec?  Testing at railstutorial.org revolves around RSpec.  However, I need to learn about testing (such as unit testing and frame testing) WITHOUT RSpec so that I can contribute to projects that don't use it. 

[dasibre]

Rails comes with Test Unit......http://guides.rubyonrails.org/v3.2.13/testing.html