Taken from this course: https://www.pluralsight.com/courses/test-driven-rails-rspec-capybara-cucumber
$ irb
$ require_relative 'bowling_game'
$ BowlingGame.new.rolls([1, 4, 4, 5, 6, 4, 5, 5, 10, 0, 1, 7, 3, 6, 4, 10, 2, 8, 6])
$ ruby bowling_game_test.rb