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#!/usr/bin/env python3
# -*- mode: python; indent-tabs-mode: t; c-basic-offset: 4; tab-width: 4 -*-
# These are internal tests. They shouldn't fail, but they don't cover all
# of the ALSA API. Most importantly PCM.read and PCM.write are missing.
# These need to be tested by playbacktest.py and recordtest.py
# In case of a problem, run these tests. If they fail, file a bug report on
# http://github.com/larsimmisch/pyalsaaudio/issues
import unittest
import alsaaudio
import warnings
# we can't test read and write well - these are tested otherwise
PCMMethods = [
('pcmtype', None),
('pcmmode', None),
('cardname', None)
]
PCMDeprecatedMethods = [
('setchannels', (2,)),
('setrate', (44100,)),
('setformat', (alsaaudio.PCM_FORMAT_S8,)),
('setperiodsize', (320,))
]
# A clever test would look at the Mixer capabilities and selectively run the
# omitted tests, but I am too tired for that.
MixerMethods = [('cardname', None),
('mixer', None),
('mixerid', None),
('switchcap', None),
('volumecap', None),
('getvolume', None),
('getrange', None),
('getenum', None),
# ('getmute', None),
# ('getrec', None),
# ('setvolume', (60,)),
# ('setmute', (0,))
# ('setrec', (0')),
]
class MixerTest(unittest.TestCase):
"""Test Mixer objects"""
def testMixer(self):
"""Open the default Mixers and the Mixers on every card"""
for c in alsaaudio.card_indexes():
mixers = alsaaudio.mixers(cardindex=c)
for m in mixers:
mixer = alsaaudio.Mixer(m, cardindex=c)
mixer.close()
def testMixerAll(self):
"Run common Mixer methods on an open object"
mixers = alsaaudio.mixers()
mixer = alsaaudio.Mixer(mixers[0])
for m, a in MixerMethods:
f = alsaaudio.Mixer.__dict__[m]
if a is None:
f(mixer)
else:
f(mixer, *a)
mixer.close()
def testMixerClose(self):
"""Run common Mixer methods on a closed object and verify it raises an
error"""
mixers = alsaaudio.mixers()
mixer = alsaaudio.Mixer(mixers[0])
mixer.close()
for m, a in MixerMethods:
f = alsaaudio.Mixer.__dict__[m]
if a is None:
self.assertRaises(alsaaudio.ALSAAudioError, f, mixer)
else:
self.assertRaises(alsaaudio.ALSAAudioError, f, mixer, *a)
class PCMTest(unittest.TestCase):
"""Test PCM objects"""
def testPCM(self):
"Open a PCM object on every card"
for c in alsaaudio.card_indexes():
pcm = alsaaudio.PCM(cardindex=c)
pcm.close()
def testPCMAll(self):
"Run all PCM methods on an open object"
pcm = alsaaudio.PCM()
for m, a in PCMMethods:
f = alsaaudio.PCM.__dict__[m]
if a is None:
f(pcm)
else:
f(pcm, *a)
pcm.close()
def testPCMClose(self):
"Run all PCM methods on a closed object and verify it raises an error"
pcm = alsaaudio.PCM()
pcm.close()
for m, a in PCMMethods:
f = alsaaudio.PCM.__dict__[m]
if a is None:
self.assertRaises(alsaaudio.ALSAAudioError, f, pcm)
else:
self.assertRaises(alsaaudio.ALSAAudioError, f, pcm, *a)
def testPCMDeprecated(self):
with warnings.catch_warnings(record=True) as w:
# Cause all warnings to always be triggered.
warnings.simplefilter("always")
try:
pcm = alsaaudio.PCM(card='default')
except alsaaudio.ALSAAudioError:
pass
# Verify we got a DepreciationWarning
self.assertEqual(len(w), 1, "PCM(card='default') expected a warning" )
self.assertTrue(issubclass(w[-1].category, DeprecationWarning), "PCM(card='default') expected a DeprecationWarning")
for m, a in PCMDeprecatedMethods:
with warnings.catch_warnings(record=True) as w:
# Cause all warnings to always be triggered.
warnings.simplefilter("always")
pcm = alsaaudio.PCM()
f = alsaaudio.PCM.__dict__[m]
if a is None:
f(pcm)
else:
f(pcm, *a)
# Verify we got a DepreciationWarning
method = "%s%s" % (m, str(a))
self.assertEqual(len(w), 1, method + " expected a warning")
self.assertTrue(issubclass(w[-1].category, DeprecationWarning), method + " expected a DeprecationWarning")
if __name__ == '__main__':
unittest.main()
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