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mixer_test.py
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mixer_test.py
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# -*- coding: utf8 -*-
import sys
import os
import unittest
import platform
from pygame.tests.test_utils import example_path, AssertRaisesRegexMixin
import pygame
from pygame import mixer
from pygame.compat import unicode_, as_bytes, bytes_
IS_PYPY = "PyPy" == platform.python_implementation()
################################### CONSTANTS ##################################
FREQUENCIES = [11025, 22050, 44100, 48000]
SIZES = [-16, -8, 8, 16]
if pygame.get_sdl_version()[0] >= 2:
SIZES.append(32)
CHANNELS = [1, 2]
BUFFERS = [3024]
CONFIGS = [
{"frequency": f, "size": s, "channels": c}
for f in FREQUENCIES
for s in SIZES
for c in CHANNELS
]
# Using all CONFIGS fails on a Mac; probably older SDL_mixer; we could do:
# if platform.system() == 'Darwin':
# But using all CONFIGS is very slow (> 10 sec for example)
# And probably, we don't need to be so exhaustive, hence:
CONFIG = {"frequency": 22050, "size": -16, "channels": 2} # base config
if pygame.get_sdl_version()[0] >= 2:
CONFIG = {"frequency": 44100, "size": 32, "channels": 2} # base config
class InvalidBool(object):
"""To help test invalid bool values."""
__nonzero__ = None
__bool__ = None
############################## MODULE LEVEL TESTS ##############################
class MixerModuleTest(unittest.TestCase):
def tearDown(self):
mixer.quit()
mixer.pre_init(0, 0, 0, 0)
def test_init__keyword_args(self):
# note: this test used to loop over all CONFIGS, but it's very slow..
mixer.init(**CONFIG)
mixer_conf = mixer.get_init()
self.assertEqual(mixer_conf[0], CONFIG["frequency"])
# Not all "sizes" are supported on all systems, hence "abs".
self.assertEqual(abs(mixer_conf[1]), abs(CONFIG["size"]))
self.assertEqual(mixer_conf[2], CONFIG["channels"])
def test_pre_init__keyword_args(self):
# note: this test used to loop over all CONFIGS, but it's very slow..
mixer.pre_init(**CONFIG)
mixer.init()
mixer_conf = mixer.get_init()
self.assertEqual(mixer_conf[0], CONFIG["frequency"])
# Not all "sizes" are supported on all systems, hence "abs".
self.assertEqual(abs(mixer_conf[1]), abs(CONFIG["size"]))
self.assertEqual(mixer_conf[2], CONFIG["channels"])
def test_pre_init__zero_values(self):
# Ensure that argument values of 0 are replaced with
# default values. No way to check buffer size though.
mixer.pre_init(22050, -8, 1) # Non default values
mixer.pre_init(0, 0, 0) # Should reset to default values
mixer.init()
self.assertEqual(mixer.get_init(), (44100, -16, 2))
def test_init__zero_values(self):
# Ensure that argument values of 0 are replaced with
# preset values. No way to check buffer size though.
mixer.pre_init(44100, 8, 1, allowedchanges=0) # None default values
mixer.init(0, 0, 0)
self.assertEqual(mixer.get_init(), (44100, 8, 1))
@unittest.skip("SDL_mixer bug")
def test_get_init__returns_exact_values_used_for_init(self):
# fix in 1.9 - I think it's a SDL_mixer bug.
# TODO: When this bug is fixed, testing through every combination
# will be too slow so adjust as necessary, at the moment it
# breaks the loop after first failure
for init_conf in CONFIGS:
frequency, size, channels
if (frequency, size) == (22050, 16):
continue
mixer.init(frequency, size, channels)
mixer_conf = mixer.get_init()
self.assertEqual(init_conf, mixer_conf)
mixer.quit()
def test_get_init__returns_None_if_mixer_not_initialized(self):
self.assertIsNone(mixer.get_init())
def test_get_num_channels__defaults_eight_after_init(self):
mixer.init()
self.assertEqual(mixer.get_num_channels(), 8)
def test_set_num_channels(self):
mixer.init()
default_num_channels = mixer.get_num_channels()
for i in range(1, default_num_channels + 1):
mixer.set_num_channels(i)
self.assertEqual(mixer.get_num_channels(), i)
def test_quit(self):
""" get_num_channels() Should throw pygame.error if uninitialized
after mixer.quit() """
mixer.init()
mixer.quit()
self.assertRaises(pygame.error, mixer.get_num_channels)
# TODO: FIXME: appveyor fails here sometimes.
@unittest.expectedFailure
def test_sound_args(self):
def get_bytes(snd):
return snd.get_raw()
mixer.init()
sample = as_bytes("\x00\xff") * 24
wave_path = example_path(os.path.join("data", "house_lo.wav"))
uwave_path = unicode_(wave_path)
bwave_path = uwave_path.encode(sys.getfilesystemencoding())
snd = mixer.Sound(file=wave_path)
self.assertTrue(snd.get_length() > 0.5)
snd_bytes = get_bytes(snd)
self.assertTrue(len(snd_bytes) > 1000)
self.assertEqual(get_bytes(mixer.Sound(wave_path)), snd_bytes)
self.assertEqual(get_bytes(mixer.Sound(file=uwave_path)), snd_bytes)
self.assertEqual(get_bytes(mixer.Sound(uwave_path)), snd_bytes)
arg_emsg = "Sound takes either 1 positional or 1 keyword argument"
with self.assertRaises(TypeError) as cm:
mixer.Sound()
self.assertEqual(str(cm.exception), arg_emsg)
with self.assertRaises(TypeError) as cm:
mixer.Sound(wave_path, buffer=sample)
self.assertEqual(str(cm.exception), arg_emsg)
with self.assertRaises(TypeError) as cm:
mixer.Sound(sample, file=wave_path)
self.assertEqual(str(cm.exception), arg_emsg)
with self.assertRaises(TypeError) as cm:
mixer.Sound(buffer=sample, file=wave_path)
self.assertEqual(str(cm.exception), arg_emsg)
with self.assertRaises(TypeError) as cm:
mixer.Sound(foobar=sample)
self.assertEqual(str(cm.exception), "Unrecognized keyword argument 'foobar'")
snd = mixer.Sound(wave_path, **{})
self.assertEqual(get_bytes(snd), snd_bytes)
snd = mixer.Sound(*[], **{"file": wave_path})
with self.assertRaises(TypeError) as cm:
mixer.Sound([])
self.assertEqual(str(cm.exception), "Unrecognized argument (type list)")
with self.assertRaises(TypeError) as cm:
snd = mixer.Sound(buffer=[])
emsg = "Expected object with buffer interface: got a list"
self.assertEqual(str(cm.exception), emsg)
ufake_path = unicode_("12345678")
self.assertRaises(IOError, mixer.Sound, ufake_path)
self.assertRaises(IOError, mixer.Sound, "12345678")
with self.assertRaises(TypeError) as cm:
mixer.Sound(buffer=unicode_("something"))
emsg = "Unicode object not allowed as buffer object"
self.assertEqual(str(cm.exception), emsg)
self.assertEqual(get_bytes(mixer.Sound(buffer=sample)), sample)
if type(sample) != str:
somebytes = get_bytes(mixer.Sound(sample))
# on python 2 we do not allow using string except as file name.
self.assertEqual(somebytes, sample)
self.assertEqual(get_bytes(mixer.Sound(file=bwave_path)), snd_bytes)
self.assertEqual(get_bytes(mixer.Sound(bwave_path)), snd_bytes)
snd = mixer.Sound(wave_path)
with self.assertRaises(TypeError) as cm:
mixer.Sound(wave_path, array=snd)
self.assertEqual(str(cm.exception), arg_emsg)
with self.assertRaises(TypeError) as cm:
mixer.Sound(buffer=sample, array=snd)
self.assertEqual(str(cm.exception), arg_emsg)
snd2 = mixer.Sound(array=snd)
self.assertEqual(snd.get_raw(), snd2.get_raw())
def test_sound_unicode(self):
"""test non-ASCII unicode path"""
mixer.init()
import shutil
ep = unicode_(example_path("data"))
temp_file = os.path.join(ep, u"浣犲ソ.wav")
org_file = os.path.join(ep, u"house_lo.wav")
shutil.copy(org_file, temp_file)
try:
with open(temp_file, "rb") as f:
pass
except IOError:
raise unittest.SkipTest("the path cannot be opened")
try:
sound = mixer.Sound(temp_file)
del sound
finally:
os.remove(temp_file)
@unittest.skipIf(
os.environ.get("SDL_AUDIODRIVER") == "disk",
"this test fails without real sound card",
)
def test_array_keyword(self):
try:
from numpy import (
array,
arange,
zeros,
int8,
uint8,
int16,
uint16,
int32,
uint32,
)
except ImportError:
self.skipTest("requires numpy")
freq = 22050
format_list = [-8, 8, -16, 16]
channels_list = [1, 2]
a_lists = dict((f, []) for f in format_list)
a32u_mono = arange(0, 256, 1, uint32)
a16u_mono = a32u_mono.astype(uint16)
a8u_mono = a32u_mono.astype(uint8)
au_list_mono = [(1, a) for a in [a8u_mono, a16u_mono, a32u_mono]]
for format in format_list:
if format > 0:
a_lists[format].extend(au_list_mono)
a32s_mono = arange(-128, 128, 1, int32)
a16s_mono = a32s_mono.astype(int16)
a8s_mono = a32s_mono.astype(int8)
as_list_mono = [(1, a) for a in [a8s_mono, a16s_mono, a32s_mono]]
for format in format_list:
if format < 0:
a_lists[format].extend(as_list_mono)
a32u_stereo = zeros([a32u_mono.shape[0], 2], uint32)
a32u_stereo[:, 0] = a32u_mono
a32u_stereo[:, 1] = 255 - a32u_mono
a16u_stereo = a32u_stereo.astype(uint16)
a8u_stereo = a32u_stereo.astype(uint8)
au_list_stereo = [(2, a) for a in [a8u_stereo, a16u_stereo, a32u_stereo]]
for format in format_list:
if format > 0:
a_lists[format].extend(au_list_stereo)
a32s_stereo = zeros([a32s_mono.shape[0], 2], int32)
a32s_stereo[:, 0] = a32s_mono
a32s_stereo[:, 1] = -1 - a32s_mono
a16s_stereo = a32s_stereo.astype(int16)
a8s_stereo = a32s_stereo.astype(int8)
as_list_stereo = [(2, a) for a in [a8s_stereo, a16s_stereo, a32s_stereo]]
for format in format_list:
if format < 0:
a_lists[format].extend(as_list_stereo)
for format in format_list:
for channels in channels_list:
try:
mixer.init(freq, format, channels)
except pygame.error:
# Some formats (e.g. 16) may not be supported.
continue
try:
__, f, c = mixer.get_init()
if f != format or c != channels:
# Some formats (e.g. -8) may not be supported.
continue
for c, a in a_lists[format]:
self._test_array_argument(format, a, c == channels)
finally:
mixer.quit()
def _test_array_argument(self, format, a, test_pass):
from numpy import array, all as all_
try:
snd = mixer.Sound(array=a)
except ValueError:
if not test_pass:
return
self.fail("Raised ValueError: Format %i, dtype %s" % (format, a.dtype))
if not test_pass:
self.fail(
"Did not raise ValueError: Format %i, dtype %s" % (format, a.dtype)
)
a2 = array(snd)
a3 = a.astype(a2.dtype)
lshift = abs(format) - 8 * a.itemsize
if lshift >= 0:
# This is asymmetric with respect to downcasting.
a3 <<= lshift
self.assertTrue(all_(a2 == a3), "Format %i, dtype %s" % (format, a.dtype))
def _test_array_interface_fail(self, a):
self.assertRaises(ValueError, mixer.Sound, array=a)
def test_array_interface(self):
mixer.init(22050, -16, 1, allowedchanges=0)
snd = mixer.Sound(buffer=as_bytes("\x00\x7f") * 20)
d = snd.__array_interface__
self.assertTrue(isinstance(d, dict))
if pygame.get_sdl_byteorder() == pygame.LIL_ENDIAN:
typestr = "<i2"
else:
typestr = ">i2"
self.assertEqual(d["typestr"], typestr)
self.assertEqual(d["shape"], (20,))
self.assertEqual(d["strides"], (2,))
self.assertEqual(d["data"], (snd._samples_address, False))
@unittest.skipIf(not pygame.HAVE_NEWBUF, "newbuf not implemented")
def test_newbuf__one_channel(self):
mixer.init(22050, -16, 1)
self._NEWBUF_export_check()
@unittest.skipIf(not pygame.HAVE_NEWBUF, "newbuf not implemented")
def test_newbuf__twho_channel(self):
mixer.init(22050, -16, 2)
self._NEWBUF_export_check()
def _NEWBUF_export_check(self):
freq, fmt, channels = mixer.get_init()
ndim = 1 if (channels == 1) else 2
itemsize = abs(fmt) // 8
formats = {
8: "B",
-8: "b",
16: "=H",
-16: "=h",
32: "=I",
-32: "=i", # 32 and 64 for future consideration
64: "=Q",
-64: "=q",
}
format = formats[fmt]
from pygame.tests.test_utils import buftools
Exporter = buftools.Exporter
Importer = buftools.Importer
is_lil_endian = pygame.get_sdl_byteorder() == pygame.LIL_ENDIAN
fsys, frev = ("<", ">") if is_lil_endian else (">", "<")
shape = (10, channels)[:ndim]
strides = (channels * itemsize, itemsize)[2 - ndim :]
exp = Exporter(shape, format=frev + "i")
snd = mixer.Sound(array=exp)
buflen = len(exp) * itemsize * channels
imp = Importer(snd, buftools.PyBUF_SIMPLE)
self.assertEqual(imp.ndim, 0)
self.assertTrue(imp.format is None)
self.assertEqual(imp.len, buflen)
self.assertEqual(imp.itemsize, itemsize)
self.assertTrue(imp.shape is None)
self.assertTrue(imp.strides is None)
self.assertTrue(imp.suboffsets is None)
self.assertFalse(imp.readonly)
self.assertEqual(imp.buf, snd._samples_address)
imp = Importer(snd, buftools.PyBUF_WRITABLE)
self.assertEqual(imp.ndim, 0)
self.assertTrue(imp.format is None)
self.assertEqual(imp.len, buflen)
self.assertEqual(imp.itemsize, itemsize)
self.assertTrue(imp.shape is None)
self.assertTrue(imp.strides is None)
self.assertTrue(imp.suboffsets is None)
self.assertFalse(imp.readonly)
self.assertEqual(imp.buf, snd._samples_address)
imp = Importer(snd, buftools.PyBUF_FORMAT)
self.assertEqual(imp.ndim, 0)
self.assertEqual(imp.format, format)
self.assertEqual(imp.len, buflen)
self.assertEqual(imp.itemsize, itemsize)
self.assertTrue(imp.shape is None)
self.assertTrue(imp.strides is None)
self.assertTrue(imp.suboffsets is None)
self.assertFalse(imp.readonly)
self.assertEqual(imp.buf, snd._samples_address)
imp = Importer(snd, buftools.PyBUF_ND)
self.assertEqual(imp.ndim, ndim)
self.assertTrue(imp.format is None)
self.assertEqual(imp.len, buflen)
self.assertEqual(imp.itemsize, itemsize)
self.assertEqual(imp.shape, shape)
self.assertTrue(imp.strides is None)
self.assertTrue(imp.suboffsets is None)
self.assertFalse(imp.readonly)
self.assertEqual(imp.buf, snd._samples_address)
imp = Importer(snd, buftools.PyBUF_STRIDES)
self.assertEqual(imp.ndim, ndim)
self.assertTrue(imp.format is None)
self.assertEqual(imp.len, buflen)
self.assertEqual(imp.itemsize, itemsize)
self.assertEqual(imp.shape, shape)
self.assertEqual(imp.strides, strides)
self.assertTrue(imp.suboffsets is None)
self.assertFalse(imp.readonly)
self.assertEqual(imp.buf, snd._samples_address)
imp = Importer(snd, buftools.PyBUF_FULL_RO)
self.assertEqual(imp.ndim, ndim)
self.assertEqual(imp.format, format)
self.assertEqual(imp.len, buflen)
self.assertEqual(imp.itemsize, 2)
self.assertEqual(imp.shape, shape)
self.assertEqual(imp.strides, strides)
self.assertTrue(imp.suboffsets is None)
self.assertFalse(imp.readonly)
self.assertEqual(imp.buf, snd._samples_address)
imp = Importer(snd, buftools.PyBUF_FULL_RO)
self.assertEqual(imp.ndim, ndim)
self.assertEqual(imp.format, format)
self.assertEqual(imp.len, buflen)
self.assertEqual(imp.itemsize, itemsize)
self.assertEqual(imp.shape, exp.shape)
self.assertEqual(imp.strides, strides)
self.assertTrue(imp.suboffsets is None)
self.assertFalse(imp.readonly)
self.assertEqual(imp.buf, snd._samples_address)
imp = Importer(snd, buftools.PyBUF_C_CONTIGUOUS)
self.assertEqual(imp.ndim, ndim)
self.assertTrue(imp.format is None)
self.assertEqual(imp.strides, strides)
imp = Importer(snd, buftools.PyBUF_ANY_CONTIGUOUS)
self.assertEqual(imp.ndim, ndim)
self.assertTrue(imp.format is None)
self.assertEqual(imp.strides, strides)
if ndim == 1:
imp = Importer(snd, buftools.PyBUF_F_CONTIGUOUS)
self.assertEqual(imp.ndim, 1)
self.assertTrue(imp.format is None)
self.assertEqual(imp.strides, strides)
else:
self.assertRaises(BufferError, Importer, snd, buftools.PyBUF_F_CONTIGUOUS)
def todo_test_fadeout(self):
# __doc__ (as of 2008-08-02) for pygame.mixer.fadeout:
# pygame.mixer.fadeout(time): return None
# fade out the volume on all sounds before stopping
#
# This will fade out the volume on all active channels over the time
# argument in milliseconds. After the sound is muted the playback will
# stop.
#
self.fail()
def todo_test_find_channel(self):
# __doc__ (as of 2008-08-02) for pygame.mixer.find_channel:
# pygame.mixer.find_channel(force=False): return Channel
# find an unused channel
#
# This will find and return an inactive Channel object. If there are
# no inactive Channels this function will return None. If there are no
# inactive channels and the force argument is True, this will find the
# Channel with the longest running Sound and return it.
#
# If the mixer has reserved channels from pygame.mixer.set_reserved()
# then those channels will not be returned here.
#
self.fail()
def todo_test_get_busy(self):
# __doc__ (as of 2008-08-02) for pygame.mixer.get_busy:
# pygame.mixer.get_busy(): return bool
# test if any sound is being mixed
#
# Returns True if the mixer is busy mixing any channels. If the mixer
# is idle then this return False.
#
self.fail()
def todo_test_pause(self):
# __doc__ (as of 2008-08-02) for pygame.mixer.pause:
# pygame.mixer.pause(): return None
# temporarily stop playback of all sound channels
#
# This will temporarily stop all playback on the active mixer
# channels. The playback can later be resumed with
# pygame.mixer.unpause()
#
self.fail()
def todo_test_set_reserved(self):
# __doc__ (as of 2008-08-02) for pygame.mixer.set_reserved:
# pygame.mixer.set_reserved(count): return None
# reserve channels from being automatically used
#
# The mixer can reserve any number of channels that will not be
# automatically selected for playback by Sounds. If sounds are
# currently playing on the reserved channels they will not be stopped.
#
# This allows the application to reserve a specific number of channels
# for important sounds that must not be dropped or have a guaranteed
# channel to play on.
#
self.fail()
def todo_test_stop(self):
# __doc__ (as of 2008-08-02) for pygame.mixer.stop:
# pygame.mixer.stop(): return None
# stop playback of all sound channels
#
# This will stop all playback of all active mixer channels.
self.fail()
def todo_test_unpause(self):
# __doc__ (as of 2008-08-02) for pygame.mixer.unpause:
# pygame.mixer.unpause(): return None
# resume paused playback of sound channels
#
# This will resume all active sound channels after they have been paused.
self.fail()
def test_get_sdl_mixer_version(self):
"""Ensures get_sdl_mixer_version works correctly with no args."""
expected_length = 3
expected_type = tuple
expected_item_type = int
version = pygame.mixer.get_sdl_mixer_version()
self.assertIsInstance(version, expected_type)
self.assertEqual(len(version), expected_length)
for item in version:
self.assertIsInstance(item, expected_item_type)
def test_get_sdl_mixer_version__args(self):
"""Ensures get_sdl_mixer_version works correctly using args."""
expected_length = 3
expected_type = tuple
expected_item_type = int
for value in (True, False):
version = pygame.mixer.get_sdl_mixer_version(value)
self.assertIsInstance(version, expected_type)
self.assertEqual(len(version), expected_length)
for item in version:
self.assertIsInstance(item, expected_item_type)
def test_get_sdl_mixer_version__kwargs(self):
"""Ensures get_sdl_mixer_version works correctly using kwargs."""
expected_length = 3
expected_type = tuple
expected_item_type = int
for value in (True, False):
version = pygame.mixer.get_sdl_mixer_version(linked=value)
self.assertIsInstance(version, expected_type)
self.assertEqual(len(version), expected_length)
for item in version:
self.assertIsInstance(item, expected_item_type)
def test_get_sdl_mixer_version__invalid_args_kwargs(self):
"""Ensures get_sdl_mixer_version handles invalid args and kwargs."""
invalid_bool = InvalidBool()
with self.assertRaises(TypeError):
version = pygame.mixer.get_sdl_mixer_version(invalid_bool)
with self.assertRaises(TypeError):
version = pygame.mixer.get_sdl_mixer_version(linked=invalid_bool)
def test_get_sdl_mixer_version__linked_equals_compiled(self):
"""Ensures get_sdl_mixer_version's linked/compiled versions are equal.
"""
linked_version = pygame.mixer.get_sdl_mixer_version(linked=True)
complied_version = pygame.mixer.get_sdl_mixer_version(linked=False)
self.assertTupleEqual(linked_version, complied_version)
############################## CHANNEL CLASS TESTS #############################
class ChannelTypeTest(AssertRaisesRegexMixin, unittest.TestCase):
@classmethod
def setUpClass(cls):
# Initializing the mixer is slow, so minimize the times it is called.
mixer.init()
@classmethod
def tearDownClass(cls):
mixer.quit()
def setUp(cls):
# This makes sure the mixer is always initialized before each test (in
# case a test calls pygame.mixer.quit()).
if mixer.get_init() is None:
mixer.init()
def test_channel(self):
"""Ensure Channel() creation works."""
channel = mixer.Channel(0)
self.assertIsInstance(channel, mixer.ChannelType)
self.assertEqual(channel.__class__.__name__, "Channel")
def test_channel__without_arg(self):
"""Ensure exception for Channel() creation with no argument."""
with self.assertRaises(TypeError):
mixer.Channel()
def test_channel__invalid_id(self):
"""Ensure exception for Channel() creation with an invalid id."""
with self.assertRaises(IndexError):
mixer.Channel(-1)
def test_channel__before_init(self):
"""Ensure exception for Channel() creation with non-init mixer."""
mixer.quit()
with self.assertRaisesRegex(pygame.error, "mixer not initialized"):
mixer.Channel(0)
def todo_test_fadeout(self):
# __doc__ (as of 2008-08-02) for pygame.mixer.Channel.fadeout:
# Channel.fadeout(time): return None
# stop playback after fading channel out
#
# Stop playback of a channel after fading out the sound over the given
# time argument in milliseconds.
#
self.fail()
def test_get_busy(self):
"""Ensure an idle channel's busy state is correct."""
expected_busy = False
channel = mixer.Channel(0)
busy = channel.get_busy()
self.assertEqual(busy, expected_busy)
def todo_test_get_busy__active(self):
"""Ensure an active channel's busy state is correct."""
self.fail()
def todo_test_get_endevent(self):
# __doc__ (as of 2008-08-02) for pygame.mixer.Channel.get_endevent:
# Channel.get_endevent(): return type
# get the event a channel sends when playback stops
#
# Returns the event type to be sent every time the Channel finishes
# playback of a Sound. If there is no endevent the function returns
# pygame.NOEVENT.
#
self.fail()
def todo_test_get_queue(self):
# __doc__ (as of 2008-08-02) for pygame.mixer.Channel.get_queue:
# Channel.get_queue(): return Sound
# return any Sound that is queued
#
# If a Sound is already queued on this channel it will be returned.
# Once the queued sound begins playback it will no longer be on the
# queue.
#
self.fail()
def todo_test_get_sound(self):
# __doc__ (as of 2008-08-02) for pygame.mixer.Channel.get_sound:
# Channel.get_sound(): return Sound
# get the currently playing Sound
#
# Return the actual Sound object currently playing on this channel. If
# the channel is idle None is returned.
#
self.fail()
def test_get_volume(self):
"""Ensure a channel's volume can be retrieved."""
expected_volume = 1.0 # default
channel = mixer.Channel(0)
volume = channel.get_volume()
self.assertAlmostEqual(volume, expected_volume)
def todo_test_get_volume__while_playing(self):
"""Ensure a channel's volume can be retrieved while playing."""
self.fail()
def todo_test_pause(self):
# __doc__ (as of 2008-08-02) for pygame.mixer.Channel.pause:
# Channel.pause(): return None
# temporarily stop playback of a channel
#
# Temporarily stop the playback of sound on a channel. It can be
# resumed at a later time with Channel.unpause()
#
self.fail()
def todo_test_play(self):
# __doc__ (as of 2008-08-02) for pygame.mixer.Channel.play:
# Channel.play(Sound, loops=0, maxtime=0, fade_ms=0): return None
# play a Sound on a specific Channel
#
# This will begin playback of a Sound on a specific Channel. If the
# Channel is currently playing any other Sound it will be stopped.
#
# The loops argument has the same meaning as in Sound.play(): it is
# the number of times to repeat the sound after the first time. If it
# is 3, the sound will be played 4 times (the first time, then three
# more). If loops is -1 then the playback will repeat indefinitely.
#
# As in Sound.play(), the maxtime argument can be used to stop
# playback of the Sound after a given number of milliseconds.
#
# As in Sound.play(), the fade_ms argument can be used fade in the sound.
self.fail()
def todo_test_queue(self):
# __doc__ (as of 2008-08-02) for pygame.mixer.Channel.queue:
# Channel.queue(Sound): return None
# queue a Sound object to follow the current
#
# When a Sound is queued on a Channel, it will begin playing
# immediately after the current Sound is finished. Each channel can
# only have a single Sound queued at a time. The queued Sound will
# only play if the current playback finished automatically. It is
# cleared on any other call to Channel.stop() or Channel.play().
#
# If there is no sound actively playing on the Channel then the Sound
# will begin playing immediately.
#
self.fail()
def todo_test_set_endevent(self):
# __doc__ (as of 2008-08-02) for pygame.mixer.Channel.set_endevent:
# Channel.set_endevent(): return None
# Channel.set_endevent(type): return None
# have the channel send an event when playback stops
#
# When an endevent is set for a channel, it will send an event to the
# pygame queue every time a sound finishes playing on that channel
# (not just the first time). Use pygame.event.get() to retrieve the
# endevent once it's sent.
#
# Note that if you called Sound.play(n) or Channel.play(sound,n), the
# end event is sent only once: after the sound has been played "n+1"
# times (see the documentation of Sound.play).
#
# If Channel.stop() or Channel.play() is called while the sound was
# still playing, the event will be posted immediately.
#
# The type argument will be the event id sent to the queue. This can
# be any valid event type, but a good choice would be a value between
# pygame.locals.USEREVENT and pygame.locals.NUMEVENTS. If no type
# argument is given then the Channel will stop sending endevents.
#
self.fail()
def todo_test_set_volume(self):
# __doc__ (as of 2008-08-02) for pygame.mixer.Channel.set_volume:
# Channel.set_volume(value): return None
# Channel.set_volume(left, right): return None
# set the volume of a playing channel
#
# Set the volume (loudness) of a playing sound. When a channel starts
# to play its volume value is reset. This only affects the current
# sound. The value argument is between 0.0 and 1.0.
#
# If one argument is passed, it will be the volume of both speakers.
# If two arguments are passed and the mixer is in stereo mode, the
# first argument will be the volume of the left speaker and the second
# will be the volume of the right speaker. (If the second argument is
# None, the first argument will be the volume of both speakers.)
#
# If the channel is playing a Sound on which set_volume() has also
# been called, both calls are taken into account. For example:
#
# sound = pygame.mixer.Sound("s.wav")
# channel = s.play() # Sound plays at full volume by default
# sound.set_volume(0.9) # Now plays at 90% of full volume.
# sound.set_volume(0.6) # Now plays at 60% (previous value replaced).
# channel.set_volume(0.5) # Now plays at 30% (0.6 * 0.5).
self.fail()
def todo_test_stop(self):
# __doc__ (as of 2008-08-02) for pygame.mixer.Channel.stop:
# Channel.stop(): return None
# stop playback on a Channel
#
# Stop sound playback on a channel. After playback is stopped the
# channel becomes available for new Sounds to play on it.
#
self.fail()
def todo_test_unpause(self):
# __doc__ (as of 2008-08-02) for pygame.mixer.Channel.unpause:
# Channel.unpause(): return None
# resume pause playback of a channel
#
# Resume the playback on a paused channel.
self.fail()
############################### SOUND CLASS TESTS ##############################
class SoundTypeTest(AssertRaisesRegexMixin, unittest.TestCase):
@classmethod
def tearDownClass(cls):
mixer.quit()
def setUp(cls):
# This makes sure the mixer is always initialized before each test (in
# case a test calls pygame.mixer.quit()).
if mixer.get_init() is None:
mixer.init()
# See MixerModuleTest's methods test_sound_args(), test_sound_unicode(),
# and test_array_keyword() for additional testing of Sound() creation.
def test_sound(self):
"""Ensure Sound() creation with a filename works."""
filename = example_path(os.path.join("data", "house_lo.wav"))
sound1 = mixer.Sound(filename)
sound2 = mixer.Sound(file=filename)
self.assertIsInstance(sound1, mixer.Sound)
self.assertIsInstance(sound2, mixer.Sound)
def test_sound__from_file_object(self):
"""Ensure Sound() creation with a file object works."""
filename = example_path(os.path.join("data", "house_lo.wav"))
# Using 'with' ensures the file is closed even if test fails.
with open(filename, "rb") as file_obj:
sound = mixer.Sound(file_obj)
self.assertIsInstance(sound, mixer.Sound)
def test_sound__from_sound_object(self):
"""Ensure Sound() creation with a Sound() object works."""
filename = example_path(os.path.join("data", "house_lo.wav"))
sound_obj = mixer.Sound(file=filename)
sound = mixer.Sound(sound_obj)
self.assertIsInstance(sound, mixer.Sound)
def todo_test_sound__from_buffer(self):
"""Ensure Sound() creation with a buffer works."""
self.fail()
def todo_test_sound__from_array(self):
"""Ensure Sound() creation with an array works."""
self.fail()
def test_sound__without_arg(self):
"""Ensure exception raised for Sound() creation with no argument."""
with self.assertRaises(TypeError):
mixer.Sound()
def test_sound__before_init(self):
"""Ensure exception raised for Sound() creation with non-init mixer."""
mixer.quit()
filename = example_path(os.path.join("data", "house_lo.wav"))
with self.assertRaisesRegex(pygame.error, "mixer not initialized"):
mixer.Sound(file=filename)
@unittest.skipIf(IS_PYPY, "pypy skip")
def test_samples_address(self):
"""Test the _samples_address getter."""
try:
from ctypes import pythonapi, c_void_p, py_object
try:
Bytes_FromString = pythonapi.PyBytes_FromString # python 3
except:
Bytes_FromString = pythonapi.PyString_FromString # python 2
Bytes_FromString.restype = c_void_p
Bytes_FromString.argtypes = [py_object]
samples = as_bytes("abcdefgh") # keep byte size a multiple of 4
sample_bytes = Bytes_FromString(samples)
snd = mixer.Sound(buffer=samples)
self.assertNotEqual(snd._samples_address, sample_bytes)
finally:
pygame.mixer.quit()
with self.assertRaisesRegex(pygame.error, "mixer not initialized"):
snd._samples_address
def todo_test_fadeout(self):
# __doc__ (as of 2008-08-02) for pygame.mixer.Sound.fadeout:
# Sound.fadeout(time): return None
# stop sound playback after fading out
#
# This will stop playback of the sound after fading it out over the
# time argument in milliseconds. The Sound will fade and stop on all
# actively playing channels.
#
self.fail()
def test_get_length(self):
"""Tests if get_length returns a correct length."""
try:
for size in SIZES:
pygame.mixer.quit()
pygame.mixer.init(size=size)