gistfile1.txt

$ mix test
.......

  1) test it uses mock in tests (MyApp.MailerTest)
     test/mailer_test.exs:4
     ** (exit) exited in: GenServer.call(MyApp.Mailer.Mock, {:update, #Function<0.6592501/1 in MyApp.Mailer.Mock.clear/0>}, 5000)
         ** (EXIT) no process
     stacktrace:
       (elixir) lib/gen_server.ex:596: GenServer.call/3
       test/mailer_test.exs:5: (test)



Finished in 0.1 seconds
8 tests, 1 failure

Randomized with seed 356689