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# Ridiculously simple test of the winsound module for Windows.
import unittest
from test import test_support
test_support.requires('audio')
import winsound, time
import os
import subprocess
class BeepTest(unittest.TestCase):
# As with PlaySoundTest, incorporate the _have_soundcard() check
# into our test methods. If there's no audio device present,
# winsound.Beep returns 0 and GetLastError() returns 127, which
# is: ERROR_PROC_NOT_FOUND ("The specified procedure could not
# be found"). (FWIW, virtual/Hyper-V systems fall under this
# scenario as they have no sound devices whatsoever (not even
# a legacy Beep device).)
def test_errors(self):
self.assertRaises(TypeError, winsound.Beep)
self.assertRaises(ValueError, winsound.Beep, 36, 75)
self.assertRaises(ValueError, winsound.Beep, 32768, 75)
def test_extremes(self):
if _have_soundcard():
winsound.Beep(37, 75)
winsound.Beep(32767, 75)
else:
# The behaviour of winsound.Beep() seems to differ between
# different versions of Windows when there's either a) no
# sound card entirely, b) legacy beep driver has been disabled,
# or c) the legacy beep driver has been uninstalled. Sometimes
# RuntimeErrors are raised, sometimes they're not. Meh.
try:
winsound.Beep(37, 75)
winsound.Beep(32767, 75)
except RuntimeError:
pass
def test_increasingfrequency(self):
if _have_soundcard():
for i in range(100, 2000, 100):
winsound.Beep(i, 75)
class MessageBeepTest(unittest.TestCase):
def tearDown(self):
time.sleep(0.5)
def test_default(self):
self.assertRaises(TypeError, winsound.MessageBeep, "bad")
self.assertRaises(TypeError, winsound.MessageBeep, 42, 42)
winsound.MessageBeep()
def test_ok(self):
winsound.MessageBeep(winsound.MB_OK)
def test_asterisk(self):
winsound.MessageBeep(winsound.MB_ICONASTERISK)
def test_exclamation(self):
winsound.MessageBeep(winsound.MB_ICONEXCLAMATION)
def test_hand(self):
winsound.MessageBeep(winsound.MB_ICONHAND)
def test_question(self):
winsound.MessageBeep(winsound.MB_ICONQUESTION)
class PlaySoundTest(unittest.TestCase):
def test_errors(self):
self.assertRaises(TypeError, winsound.PlaySound)
self.assertRaises(TypeError, winsound.PlaySound, "bad", "bad")
self.assertRaises(
RuntimeError,
winsound.PlaySound,
"none", winsound.SND_ASYNC | winsound.SND_MEMORY
)
def test_alias_asterisk(self):
if _have_soundcard():
winsound.PlaySound('SystemAsterisk', winsound.SND_ALIAS)
else:
self.assertRaises(
RuntimeError,
winsound.PlaySound,
'SystemAsterisk', winsound.SND_ALIAS
)
def test_alias_exclamation(self):
if _have_soundcard():
winsound.PlaySound('SystemExclamation', winsound.SND_ALIAS)
else:
self.assertRaises(
RuntimeError,
winsound.PlaySound,
'SystemExclamation', winsound.SND_ALIAS
)
def test_alias_exit(self):
if _have_soundcard():
winsound.PlaySound('SystemExit', winsound.SND_ALIAS)
else:
self.assertRaises(
RuntimeError,
winsound.PlaySound,
'SystemExit', winsound.SND_ALIAS
)
def test_alias_hand(self):
if _have_soundcard():
winsound.PlaySound('SystemHand', winsound.SND_ALIAS)
else:
self.assertRaises(
RuntimeError,
winsound.PlaySound,
'SystemHand', winsound.SND_ALIAS
)
def test_alias_question(self):
if _have_soundcard():
winsound.PlaySound('SystemQuestion', winsound.SND_ALIAS)
else:
self.assertRaises(
RuntimeError,
winsound.PlaySound,
'SystemQuestion', winsound.SND_ALIAS
)
def test_alias_fallback(self):
# This test can't be expected to work on all systems. The MS
# PlaySound() docs say:
#
# If it cannot find the specified sound, PlaySound uses the
# default system event sound entry instead. If the function
# can find neither the system default entry nor the default
# sound, it makes no sound and returns FALSE.
#
# It's known to return FALSE on some real systems.
# winsound.PlaySound('!"$%&/(#+*', winsound.SND_ALIAS)
return
def test_alias_nofallback(self):
if _have_soundcard():
# Note that this is not the same as asserting RuntimeError
# will get raised: you cannot convert this to
# self.assertRaises(...) form. The attempt may or may not
# raise RuntimeError, but it shouldn't raise anything other
# than RuntimeError, and that's all we're trying to test
# here. The MS docs aren't clear about whether the SDK
# PlaySound() with SND_ALIAS and SND_NODEFAULT will return
# True or False when the alias is unknown. On Tim's WinXP
# box today, it returns True (no exception is raised). What
# we'd really like to test is that no sound is played, but
# that requires first wiring an eardrum class into unittest
# <wink>.
try:
winsound.PlaySound(
'!"$%&/(#+*',
winsound.SND_ALIAS | winsound.SND_NODEFAULT
)
except RuntimeError:
pass
else:
self.assertRaises(
RuntimeError,
winsound.PlaySound,
'!"$%&/(#+*', winsound.SND_ALIAS | winsound.SND_NODEFAULT
)
def test_stopasync(self):
if _have_soundcard():
winsound.PlaySound(
'SystemQuestion',
winsound.SND_ALIAS | winsound.SND_ASYNC | winsound.SND_LOOP
)
time.sleep(0.5)
try:
winsound.PlaySound(
'SystemQuestion',
winsound.SND_ALIAS | winsound.SND_NOSTOP
)
except RuntimeError:
pass
else: # the first sound might already be finished
pass
winsound.PlaySound(None, winsound.SND_PURGE)
else:
self.assertRaises(
RuntimeError,
winsound.PlaySound,
None, winsound.SND_PURGE
)
def _get_cscript_path():
"""Return the full path to cscript.exe or None."""
for dir in os.environ.get("PATH", "").split(os.pathsep):
cscript_path = os.path.join(dir, "cscript.exe")
if os.path.exists(cscript_path):
return cscript_path
__have_soundcard_cache = None
def _have_soundcard():
"""Return True iff this computer has a soundcard."""
global __have_soundcard_cache
if __have_soundcard_cache is None:
cscript_path = _get_cscript_path()
if cscript_path is None:
# Could not find cscript.exe to run our VBScript helper. Default
# to True: most computers these days *do* have a soundcard.
return True
check_script = os.path.join(os.path.dirname(__file__),
"check_soundcard.vbs")
p = subprocess.Popen([cscript_path, check_script],
stdout=subprocess.PIPE)
__have_soundcard_cache = not p.wait()
return __have_soundcard_cache
def test_main():
test_support.run_unittest(BeepTest, MessageBeepTest, PlaySoundTest)
if __name__=="__main__":
test_main()
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