Recently I added the first high-level test to a Sinatra app with no tests. This required a lot of initial setup, involving, among other things, RSpec, Rake::Test, Capybara, EmailSpec and Pony, mocking OmniAuth callbacks, and using DatabaseCleaner with Sequel. For the benefit of my future self and anyone else who needs to set up Sinatra for acceptance-level tests, I documented the whole process.