You can’t always do it, but usually you can refactor the test to be a single equality check.

(I agree with your ask. I’m only suggesting an interim—sometimes better—solution.)

e.g.

;;instead of this
(doseq [[in out] items]
  (is (= out (foo in))))

;; do this
(is (= outs
       (map foo ins)))

Well sure. But I mean, the data I'm asking about is clearly available so there is no theoretical reason it's can't be shown with the failures. It already shows the individual failure diffs

But thanks for the suggestion

Just so I’m clear, what sort of context would you want to see? How would you want to distinguish the different cases? In the case of something like (doseq [[in out] items] ...) there’s no good way to get just in and out, unless I’m misunderstanding something.

The stuff from here: https://clojure.github.io/clojure/clojure.test-api.html#clojure.test/testing

If you run the test as a function and get a failure, you will see it printed out