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from test.support import findfile, TESTFN, unlink
import unittest
import array
import io
import pickle
import sys
def byteswap2(data):
a = array.array('h', data)
a.byteswap()
return a.tobytes()
def byteswap3(data):
ba = bytearray(data)
ba[::3] = data[2::3]
ba[2::3] = data[::3]
return bytes(ba)
def byteswap4(data):
a = array.array('i', data)
a.byteswap()
return a.tobytes()
class AudioTests:
close_fd = False
def setUp(self):
self.f = self.fout = None
def tearDown(self):
if self.f is not None:
self.f.close()
if self.fout is not None:
self.fout.close()
unlink(TESTFN)
def check_params(self, f, nchannels, sampwidth, framerate, nframes,
comptype, compname):
self.assertEqual(f.getnchannels(), nchannels)
self.assertEqual(f.getsampwidth(), sampwidth)
self.assertEqual(f.getframerate(), framerate)
self.assertEqual(f.getnframes(), nframes)
self.assertEqual(f.getcomptype(), comptype)
self.assertEqual(f.getcompname(), compname)
params = f.getparams()
self.assertEqual(params,
(nchannels, sampwidth, framerate, nframes, comptype, compname))
dump = pickle.dumps(params)
self.assertEqual(pickle.loads(dump), params)
class AudioWriteTests(AudioTests):
def create_file(self, testfile):
f = self.fout = self.module.open(testfile, 'wb')
f.setnchannels(self.nchannels)
f.setsampwidth(self.sampwidth)
f.setframerate(self.framerate)
f.setcomptype(self.comptype, self.compname)
return f
def check_file(self, testfile, nframes, frames):
f = self.module.open(testfile, 'rb')
try:
self.assertEqual(f.getnchannels(), self.nchannels)
self.assertEqual(f.getsampwidth(), self.sampwidth)
self.assertEqual(f.getframerate(), self.framerate)
self.assertEqual(f.getnframes(), nframes)
self.assertEqual(f.readframes(nframes), frames)
finally:
f.close()
def test_write_params(self):
f = self.create_file(TESTFN)
f.setnframes(self.nframes)
f.writeframes(self.frames)
self.check_params(f, self.nchannels, self.sampwidth, self.framerate,
self.nframes, self.comptype, self.compname)
f.close()
def test_write(self):
f = self.create_file(TESTFN)
f.setnframes(self.nframes)
f.writeframes(self.frames)
f.close()
self.check_file(TESTFN, self.nframes, self.frames)
def test_incompleted_write(self):
with open(TESTFN, 'wb') as testfile:
testfile.write(b'ababagalamaga')
f = self.create_file(testfile)
f.setnframes(self.nframes + 1)
f.writeframes(self.frames)
f.close()
with open(TESTFN, 'rb') as testfile:
self.assertEqual(testfile.read(13), b'ababagalamaga')
self.check_file(testfile, self.nframes, self.frames)
def test_multiple_writes(self):
with open(TESTFN, 'wb') as testfile:
testfile.write(b'ababagalamaga')
f = self.create_file(testfile)
f.setnframes(self.nframes)
framesize = self.nchannels * self.sampwidth
f.writeframes(self.frames[:-framesize])
f.writeframes(self.frames[-framesize:])
f.close()
with open(TESTFN, 'rb') as testfile:
self.assertEqual(testfile.read(13), b'ababagalamaga')
self.check_file(testfile, self.nframes, self.frames)
def test_overflowed_write(self):
with open(TESTFN, 'wb') as testfile:
testfile.write(b'ababagalamaga')
f = self.create_file(testfile)
f.setnframes(self.nframes - 1)
f.writeframes(self.frames)
f.close()
with open(TESTFN, 'rb') as testfile:
self.assertEqual(testfile.read(13), b'ababagalamaga')
self.check_file(testfile, self.nframes, self.frames)
class AudioTestsWithSourceFile(AudioTests):
@classmethod
def setUpClass(cls):
cls.sndfilepath = findfile(cls.sndfilename, subdir='audiodata')
def test_read_params(self):
f = self.f = self.module.open(self.sndfilepath)
#self.assertEqual(f.getfp().name, self.sndfilepath)
self.check_params(f, self.nchannels, self.sampwidth, self.framerate,
self.sndfilenframes, self.comptype, self.compname)
def test_close(self):
with open(self.sndfilepath, 'rb') as testfile:
f = self.f = self.module.open(testfile)
self.assertFalse(testfile.closed)
f.close()
self.assertEqual(testfile.closed, self.close_fd)
with open(TESTFN, 'wb') as testfile:
fout = self.fout = self.module.open(testfile, 'wb')
self.assertFalse(testfile.closed)
with self.assertRaises(self.module.Error):
fout.close()
self.assertEqual(testfile.closed, self.close_fd)
fout.close() # do nothing
def test_read(self):
framesize = self.nchannels * self.sampwidth
chunk1 = self.frames[:2 * framesize]
chunk2 = self.frames[2 * framesize: 4 * framesize]
f = self.f = self.module.open(self.sndfilepath)
self.assertEqual(f.readframes(0), b'')
self.assertEqual(f.tell(), 0)
self.assertEqual(f.readframes(2), chunk1)
f.rewind()
pos0 = f.tell()
self.assertEqual(pos0, 0)
self.assertEqual(f.readframes(2), chunk1)
pos2 = f.tell()
self.assertEqual(pos2, 2)
self.assertEqual(f.readframes(2), chunk2)
f.setpos(pos2)
self.assertEqual(f.readframes(2), chunk2)
f.setpos(pos0)
self.assertEqual(f.readframes(2), chunk1)
with self.assertRaises(self.module.Error):
f.setpos(-1)
with self.assertRaises(self.module.Error):
f.setpos(f.getnframes() + 1)
def test_copy(self):
f = self.f = self.module.open(self.sndfilepath)
fout = self.fout = self.module.open(TESTFN, 'wb')
fout.setparams(f.getparams())
i = 0
n = f.getnframes()
while n > 0:
i += 1
fout.writeframes(f.readframes(i))
n -= i
fout.close()
fout = self.fout = self.module.open(TESTFN, 'rb')
f.rewind()
self.assertEqual(f.getparams(), fout.getparams())
self.assertEqual(f.readframes(f.getnframes()),
fout.readframes(fout.getnframes()))
def test_read_not_from_start(self):
with open(TESTFN, 'wb') as testfile:
testfile.write(b'ababagalamaga')
with open(self.sndfilepath, 'rb') as f:
testfile.write(f.read())
with open(TESTFN, 'rb') as testfile:
self.assertEqual(testfile.read(13), b'ababagalamaga')
f = self.module.open(testfile, 'rb')
try:
self.assertEqual(f.getnchannels(), self.nchannels)
self.assertEqual(f.getsampwidth(), self.sampwidth)
self.assertEqual(f.getframerate(), self.framerate)
self.assertEqual(f.getnframes(), self.sndfilenframes)
self.assertEqual(f.readframes(self.nframes), self.frames)
finally:
f.close()
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