Pre-load applications before setting the environment variables

test/suite.erl

@@ -28,6 +28,9 @@ init_config(Config) ->
     CertFile = filename:join([DataDir, "cert.pem"]),
     {ok, CWD} = file:get_cwd(),
     {ok, _} = file:copy(CertFile, filename:join([CWD, "cert.pem"])),
+    ok = application:load(sasl),
+    ok = application:load(mnesia),
+    ok = application:load(ejabberd),
     application:set_env(ejabberd, config, ConfigPath),
     application:set_env(ejabberd, log_path, LogPath),
     application:set_env(sasl, sasl_error_logger, {file, SASLPath}),