You can have automated test generation. I'd imagine with a database system, you'd have a big list of possible ingredients to a query and then go thorugh a serie

You can have automated test generation. I'd imagine with a database system, you'd have a big list of possible ingredients to a query and then go thorugh a series of nested for loops to concatenate them together and make sure each permutation works separately. That can easily make for thousands of tests with only a few lines of code.