Add test:clj task

Author: borkdude

bb.edn

@@ -2,8 +2,14 @@
  {lambdaisland/open-source {:git/url "https://github.com/lambdaisland/open-source"
                             :git/sha "f2133b2a88bff3898e027c9b50516161c237792e"}}
  :tasks
- {test:bb {:doc "Run babashka tests with custom runner"
+ {:requires ([babashka.fs :as fs])
+  test:bb {:doc "Run babashka tests with custom runner"
            :extra-paths ["src" "test"]
            :extra-deps {current/project {:local/root "."}
                         org.clojure/test.check    {:mvn/version "1.1.1"}}
-           :task (exec 'lambdaisland.deep-diff2.runner/run-tests)}}}
+           :task (exec 'lambdaisland.deep-diff2.runner/run-tests)}
+  npm-ws (when-not (fs/exists? "node_modules/ws")
+           (shell "npm install ws"))
+  test:clj {:doc "Run kaocha tests"
+            :depends [npm-ws]
+            :task (apply clojure "-M:dev:test -m kaocha.runner" *command-line-args*)}}}