I tried reading the "Full report" but I don't understand it 😢

And the full application works as expected

Test case looks like the following:

(deftest message-bus-loop
  ;; Start the message bus, as needed by the dispatch handler
  (mount/start #'sut/message-bus)
  
  (let [test-out (async/chan)]
    (async/tap (:broadcast sut/message-bus) test-out)

    (testing "Received request on in channel and response on broadcast channel"
      (async/go (async/>! (:in sut/message-bus) {:event "ping"
                                                 :audit (audit/info)})) ; Line 63
      (is (= {:event "pong"}
             (async/<!! test-out))))

    )

  (mount/stop))

Are you using lein?

This is probably an issue with aot compilation order as the ioc-macros namespace is now dynaloaded

Several other people have reported this

Adding clojure.core.async.impl.ioc-macros to the top of your aot compilation list will probably fix it if so

Yes, I am using lein I didn't know I had an "aot compilation list"... but I'll look into it

did you run lein clean after you updated the library version?

yes

still failing

just making sure :man-shrugging:

Try adding clojure.core.async.impl.ioc-macros as the first require in the namespace where the test fails?

hmm still fails... like this, right?:

(ns leads.message-bus-test
  (:require [clojure.core.async.impl.ioc-macros]
            [clojure.core.async :as async]
            ...

Only setting :main in a Leining project.clj causes a warning: > Warning: specified :main without including it in :aot. > Implicit AOT of :main will be removed in Leiningen 3.0.0. But including the main namespace in :aot as well, causes lein test to fail with:

Syntax error (NoSuchFieldError) compiling at ...
__thunk__0__

It also fixed the issue when I also included core async ns as Alex suggested:

:aot [clojure.core.async.impl.ioc-macros my-ns]