Fix #8618. Ask the Windows mixer API if there are any playback devices
configured before attempting to test PlaySound.
diff --git a/Lib/test/test_winsound.py b/Lib/test/test_winsound.py
index 228dfa1..366c74b 100644
--- a/Lib/test/test_winsound.py
+++ b/Lib/test/test_winsound.py
@@ -5,6 +5,7 @@
import time
import os
import subprocess
+import ctypes
winsound = test_support.import_module('winsound')
import _winreg
@@ -12,6 +13,11 @@
def has_sound(sound):
"""Find out if a particular event is configured with a default sound"""
try:
+ # Ask the mixer API for the number of devices it knows about.
+ # When there are no devices, PlaySound will fail.
+ if ctypes.windll.winmm.mixerGetNumDevs() is 0:
+ return False
+
key = _winreg.OpenKeyEx(_winreg.HKEY_CURRENT_USER,
"AppEvents\Schemes\Apps\.Default\{0}\.Default".format(sound))
value = _winreg.EnumValue(key, 0)[1]