Oftentimes, you'll already have written tests to make sure your logic works. Otherwise, you might just run your app in a test environment and make sure it doesn

Oftentimes, you'll already have written tests to make sure your logic works. Otherwise, you might just run your app in a test environment and make sure it doesn't immediately crash. (Because that's what CoffeeScript would do in this case, as far as I know.) Pretty standard stuff across the industry.