import audioop
import unittest
from test.support import run_unittest
def gendata1():
 return b'0円1円2円'
def gendata2():
 if audioop.getsample(b'0円1円', 2, 0) == 1:
 return b'0円0円0円1円0円2円'
 else:
 return b'0円0円1円0円2円0円'
def gendata4():
 if audioop.getsample(b'0円0円0円1円', 4, 0) == 1:
 return b'0円0円0円0円0円0円0円1円0円0円0円2円'
 else:
 return b'0円0円0円0円1円0円0円0円2円0円0円0円'
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 = bytearray(len(d))
 for i,b in enumerate(d):
 str[i] = 2*b
 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(b'0円0円', 1, None), (b'0円0円0円0円', (0,0)))
 def test_lin2adpcm(self):
 # Very cursory test
 self.assertEqual(audioop.lin2adpcm(b'0円0円0円0円', 1, None), (b'0円0円', (0,0)))
 def test_lin2alaw(self):
 self.assertEqual(audioop.lin2alaw(data[0], 1), b'\xd5\xc5\xf5')
 self.assertEqual(audioop.lin2alaw(data[1], 2), b'\xd5\xd5\xd5')
 self.assertEqual(audioop.lin2alaw(data[2], 4), b'\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), b'\xff\xe7\xdb')
 self.assertEqual(audioop.lin2ulaw(data[1], 2), b'\xff\xff\xff')
 self.assertEqual(audioop.lin2ulaw(data[2], 4), b'\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 = bytearray(len(d))
 for i,b in enumerate(d):
 str[i] = 2*b
 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, b'000円000円001円001円002円001円000円000円001円001円002円')
 def test_reverse(self):
 self.assertEqual(audioop.reverse(data[0], 1), b'2円1円0円')
 def test_tomono(self):
 data2 = bytearray()
 for d in data[0]:
 data2.append(d)
 data2.append(d)
 self.assertEqual(audioop.tomono(data2, 1, 0.5, 0.5), data[0])
 def test_tostereo(self):
 data2 = bytearray()
 for d in data[0]:
 data2.append(d)
 data2.append(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 range(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()
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