diff --git a/test/function_test.py b/test/function_test.py
index 992adae..10d182e 100644
--- a/test/function_test.py
+++ b/test/function_test.py
@@ -1,8 +1,19 @@
 # -*- coding: utf-8 -*-
 """
 >>> import os
->>> from nava import play
->>> sound_id = play(os.path.join("others", "test.wav"))
+>>> from nava import play, stop, stop_all
+>>> play(os.path.join("others", "test.wav"), async_mode=False)
+>>> sound_id_1 = play(os.path.join("others", "test.wav"), async_mode=True)
+>>> sound_id_1 == 1001
+True
+>>> sound_id_2 = play(os.path.join("others", "test.wav"), async_mode=True)
+>>> sound_id_2 == 1002
+True
+>>> sound_id_3 = play(os.path.join("others", "test.wav"), async_mode=True)
+>>> sound_id_3 == 1003
+True
+>>> stop(1001)
+>>> stop_all()
 >>> from nava.functions import nava_help
 >>> nava_help()
 <BLANKLINE>