Unit tests are only partly to prove your code works when you initially write it, though. They also have significant value in allowing others—or Future You—the c

Unit tests are only partly to prove your code works when you initially write it, though. They also have significant value in allowing others—or Future You—the confidence to touch nearby code without feeling scared of breaking things. This is very important in Java and similar languages; in Clojure I suspect¹ this is less important just because functional styles lend themselves better to obviously-correct code. ¹Disclaimer: I have no experience with Clojure, working primarily in Scala these days. I do aim for good unit test coverage in Scala just the same as I did when I worked in Java.