Best way to test multiple implementations of a protocol?

test-multiple-impls.clj

(ns test.multiple.implementations
  (:require [clojure.test :refer [deftest is]]))

;;; Protocol and records that implement it

(defprotocol P (value [this]))

(defrecord One [] P (value [_] 1))
(defrecord Three [] P (value [_] 3))
;; potentially several more...

;;; Test suite that should hold for any implementation

(deftest is-positive
  (is (pos? (value (->One)))))

(deftest is-odd
  (is (odd? (value (->One)))))

;;; Now, how to actually test *all* implementations?

;; Goals:
;; * No unnecessary repetition.
;; * Error messages should be informative, i.e. the failing
;;   implementation should be present in the test output.