/lib-python/2.7/test/test_audioop.py
Python | 206 lines | 190 code | 16 blank | 0 comment | 5 complexity | 206c235dc043ef47ffb38e797b143b35 MD5 | raw file
- import audioop
- import unittest
- from test.test_support import run_unittest
- def gendata1():
- return '\0\1\2'
- def gendata2():
- if audioop.getsample('\0\1', 2, 0) == 1:
- return '\0\0\0\1\0\2'
- else:
- return '\0\0\1\0\2\0'
- def gendata4():
- if audioop.getsample('\0\0\0\1', 4, 0) == 1:
- return '\0\0\0\0\0\0\0\1\0\0\0\2'
- else:
- return '\0\0\0\0\1\0\0\0\2\0\0\0'
- data = [gendata1(), gendata2(), gendata4()]
- INVALID_DATA = [
- ('abc', 0),
- ('abc', 2),
- ('abc', 4),
- ]
- class TestAudioop(unittest.TestCase):
- def test_max(self):
- self.assertEqual(audioop.max(data[0], 1), 2)
- self.assertEqual(audioop.max(data[1], 2), 2)
- self.assertEqual(audioop.max(data[2], 4), 2)
- def test_minmax(self):
- self.assertEqual(audioop.minmax(data[0], 1), (0, 2))
- self.assertEqual(audioop.minmax(data[1], 2), (0, 2))
- self.assertEqual(audioop.minmax(data[2], 4), (0, 2))
- def test_maxpp(self):
- self.assertEqual(audioop.maxpp(data[0], 1), 0)
- self.assertEqual(audioop.maxpp(data[1], 2), 0)
- self.assertEqual(audioop.maxpp(data[2], 4), 0)
- def test_avg(self):
- self.assertEqual(audioop.avg(data[0], 1), 1)
- self.assertEqual(audioop.avg(data[1], 2), 1)
- self.assertEqual(audioop.avg(data[2], 4), 1)
- def test_avgpp(self):
- self.assertEqual(audioop.avgpp(data[0], 1), 0)
- self.assertEqual(audioop.avgpp(data[1], 2), 0)
- self.assertEqual(audioop.avgpp(data[2], 4), 0)
- def test_rms(self):
- self.assertEqual(audioop.rms(data[0], 1), 1)
- self.assertEqual(audioop.rms(data[1], 2), 1)
- self.assertEqual(audioop.rms(data[2], 4), 1)
- def test_cross(self):
- self.assertEqual(audioop.cross(data[0], 1), 0)
- self.assertEqual(audioop.cross(data[1], 2), 0)
- self.assertEqual(audioop.cross(data[2], 4), 0)
- def test_add(self):
- data2 = []
- for d in data:
- str = ''
- for s in d:
- str = str + chr(ord(s)*2)
- data2.append(str)
- self.assertEqual(audioop.add(data[0], data[0], 1), data2[0])
- self.assertEqual(audioop.add(data[1], data[1], 2), data2[1])
- self.assertEqual(audioop.add(data[2], data[2], 4), data2[2])
- def test_bias(self):
- # Note: this test assumes that avg() works
- d1 = audioop.bias(data[0], 1, 100)
- d2 = audioop.bias(data[1], 2, 100)
- d4 = audioop.bias(data[2], 4, 100)
- self.assertEqual(audioop.avg(d1, 1), 101)
- self.assertEqual(audioop.avg(d2, 2), 101)
- self.assertEqual(audioop.avg(d4, 4), 101)
- def test_lin2lin(self):
- # too simple: we test only the size
- for d1 in data:
- for d2 in data:
- got = len(d1)//3
- wtd = len(d2)//3
- self.assertEqual(len(audioop.lin2lin(d1, got, wtd)), len(d2))
- def test_adpcm2lin(self):
- # Very cursory test
- self.assertEqual(audioop.adpcm2lin('\0\0', 1, None), ('\0\0\0\0', (0,0)))
- def test_lin2adpcm(self):
- # Very cursory test
- self.assertEqual(audioop.lin2adpcm('\0\0\0\0', 1, None), ('\0\0', (0,0)))
- def test_lin2alaw(self):
- self.assertEqual(audioop.lin2alaw(data[0], 1), '\xd5\xc5\xf5')
- self.assertEqual(audioop.lin2alaw(data[1], 2), '\xd5\xd5\xd5')
- self.assertEqual(audioop.lin2alaw(data[2], 4), '\xd5\xd5\xd5')
- def test_alaw2lin(self):
- # Cursory
- d = audioop.lin2alaw(data[0], 1)
- self.assertEqual(audioop.alaw2lin(d, 1), data[0])
- def test_lin2ulaw(self):
- self.assertEqual(audioop.lin2ulaw(data[0], 1), '\xff\xe7\xdb')
- self.assertEqual(audioop.lin2ulaw(data[1], 2), '\xff\xff\xff')
- self.assertEqual(audioop.lin2ulaw(data[2], 4), '\xff\xff\xff')
- def test_ulaw2lin(self):
- # Cursory
- d = audioop.lin2ulaw(data[0], 1)
- self.assertEqual(audioop.ulaw2lin(d, 1), data[0])
- def test_mul(self):
- data2 = []
- for d in data:
- str = ''
- for s in d:
- str = str + chr(ord(s)*2)
- data2.append(str)
- self.assertEqual(audioop.mul(data[0], 1, 2), data2[0])
- self.assertEqual(audioop.mul(data[1],2, 2), data2[1])
- self.assertEqual(audioop.mul(data[2], 4, 2), data2[2])
- def test_ratecv(self):
- state = None
- d1, state = audioop.ratecv(data[0], 1, 1, 8000, 16000, state)
- d2, state = audioop.ratecv(data[0], 1, 1, 8000, 16000, state)
- self.assertEqual(d1 + d2, '\000\000\001\001\002\001\000\000\001\001\002')
- def test_reverse(self):
- self.assertEqual(audioop.reverse(data[0], 1), '\2\1\0')
- def test_tomono(self):
- data2 = ''
- for d in data[0]:
- data2 = data2 + d + d
- self.assertEqual(audioop.tomono(data2, 1, 0.5, 0.5), data[0])
- def test_tostereo(self):
- data2 = ''
- for d in data[0]:
- data2 = data2 + d + d
- self.assertEqual(audioop.tostereo(data[0], 1, 1, 1), data2)
- def test_findfactor(self):
- self.assertEqual(audioop.findfactor(data[1], data[1]), 1.0)
- def test_findfit(self):
- self.assertEqual(audioop.findfit(data[1], data[1]), (0, 1.0))
- def test_findmax(self):
- self.assertEqual(audioop.findmax(data[1], 1), 2)
- def test_getsample(self):
- for i in range(3):
- self.assertEqual(audioop.getsample(data[0], 1, i), i)
- self.assertEqual(audioop.getsample(data[1], 2, i), i)
- self.assertEqual(audioop.getsample(data[2], 4, i), i)
- def test_negativelen(self):
- # from issue 3306, previously it segfaulted
- self.assertRaises(audioop.error,
- audioop.findmax, ''.join( chr(x) for x in xrange(256)), -2392392)
- def test_issue7673(self):
- state = None
- for data, size in INVALID_DATA:
- size2 = size
- self.assertRaises(audioop.error, audioop.getsample, data, size, 0)
- self.assertRaises(audioop.error, audioop.max, data, size)
- self.assertRaises(audioop.error, audioop.minmax, data, size)
- self.assertRaises(audioop.error, audioop.avg, data, size)
- self.assertRaises(audioop.error, audioop.rms, data, size)
- self.assertRaises(audioop.error, audioop.avgpp, data, size)
- self.assertRaises(audioop.error, audioop.maxpp, data, size)
- self.assertRaises(audioop.error, audioop.cross, data, size)
- self.assertRaises(audioop.error, audioop.mul, data, size, 1.0)
- self.assertRaises(audioop.error, audioop.tomono, data, size, 0.5, 0.5)
- self.assertRaises(audioop.error, audioop.tostereo, data, size, 0.5, 0.5)
- self.assertRaises(audioop.error, audioop.add, data, data, size)
- self.assertRaises(audioop.error, audioop.bias, data, size, 0)
- self.assertRaises(audioop.error, audioop.reverse, data, size)
- self.assertRaises(audioop.error, audioop.lin2lin, data, size, size2)
- self.assertRaises(audioop.error, audioop.ratecv, data, size, 1, 1, 1, state)
- self.assertRaises(audioop.error, audioop.lin2ulaw, data, size)
- self.assertRaises(audioop.error, audioop.ulaw2lin, data, size)
- self.assertRaises(audioop.error, audioop.lin2alaw, data, size)
- self.assertRaises(audioop.error, audioop.alaw2lin, data, size)
- self.assertRaises(audioop.error, audioop.lin2adpcm, data, size, state)
- self.assertRaises(audioop.error, audioop.adpcm2lin, data, size, state)
- def test_main():
- run_unittest(TestAudioop)
- if __name__ == '__main__':
- test_main()