Switch to kaocha for running tests

This is in anticipation of adding some
clojure.spec-based generative tests, which the
official test runner doesn't support well.

Author: cap10morgan

bb.edn

@@ -3,17 +3,11 @@
          org.babashka/spec.alpha {:git/url "https://github.com/babashka/spec.alpha"
                                   :git/sha "951b49b8c173244e66443b8188e3ff928a0a71e7"}}
  :tasks
- {:requires    ([docker-clojure.core :as dc])
+ {:requires    ([babashka.deps :as deps]
+                [docker-clojure.core :as dc])
   clean        (dc/-main "clean")
   dockerfiles  {:depends [clean]
                 :task    (apply dc/-main "dockerfiles" *command-line-args*)}
   manifest     (apply dc/-main "manifest" *command-line-args*)
   build-images {:task    (apply dc/-main "build-images" *command-line-args*)}
-  test         {:extra-paths ["test"]
-                :requires    ([docker-clojure.test-runner :as tr])
-                :task        (tr/-main
-                               'docker-clojure.core-test
-                               'docker-clojure.docker-test
-                               'docker-clojure.dockerfile-test
-                               'docker-clojure.manifest-test
-                               'docker-clojure.variant-test)}}}
+  test         (deref (deps/clojure '-X:test))}}

deps.edn

@@ -11,7 +11,8 @@
                              :parallelization 2}}
 
   :test         {:extra-paths ["test"]
-                 :extra-deps  {com.cognitect/test-runner
-                               {:git/url "https://github.com/cognitect-labs/test-runner.git"
-                                :sha     "9d36f36ff541dac680a05010e4348c744333f191"}}
-                 :main-opts   ["-m" "cognitect.test-runner"]}}}
+                 :extra-deps  {lambdaisland/kaocha {:mvn/version "1.91.1392"}
+                               orchestra/orchestra {:mvn/version "2021.01.01-1"}
+                               org.clojure/test.check {:mvn/version "1.1.1"}}
+                 :exec-fn     docker-clojure.fix-kaocha/run-tests
+                 :exec-args   {}}}}

test/docker_clojure/fix_kaocha.clj

@@ -0,0 +1,15 @@
+(ns docker-clojure.fix-kaocha
+  "Kaocha often has bugs with tools-deps exec-fn usage because they have two
+  different entry points (and one doesn't use the other). They insist on
+  everyone using a `bin/kaocha` script to run their tests even though that is
+  inconsistent with most Clojure tooling idioms. This ns exists to work around
+  bugs we encounter and make kaocha behave better."
+  (:require [clojure.spec.alpha :as spec]
+            [expound.alpha :as expound]
+            [kaocha.runner :as kaocha]))
+
+(defn run-tests
+  [opts]
+  ;; work around https://github.com/lambdaisland/kaocha/issues/445
+  (binding [spec/*explain-out* expound/printer]
+    (kaocha/exec-fn opts)))

test/docker_clojure/test_runner.clj

@@ -0,0 +1 @@
+#kaocha/v1 {:plugins [:kaocha.plugin.alpha/spec-test-check]}