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bpo-32056: Improve exceptions in aifc, wave and sunau. (GH-5951)

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Serhiy Storchaka 2018-03-18 09:55:53 +02:00 • committed by GitHub
parent bc300ce205
commit 134cb01cda
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7 changed files with 150 additions and 7 deletions
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35
Lib/test/test_aifc.py
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@ -268,7 +268,8 @@ class AIFCLowLevelTest(unittest.TestCase):
def test_read_no_ssnd_chunk(self):
b = b'FORM' + struct.pack('>L', 4) + b'AIFC'
b += b'COMM' + struct.pack('>LhlhhLL', 38, 0, 0, 0, 0, 0, 0)
b += b'COMM' + struct.pack('>LhlhhLL', 38, 1, 0, 8,
0x4000 | 12, 11025<<18, 0)
b += b'NONE' + struct.pack('B', 14) + b'not compressed' + b'\x00'
with self.assertRaisesRegex(aifc.Error, 'COMM chunk and/or SSND chunk'
' missing'):
@ -276,13 +277,35 @@ class AIFCLowLevelTest(unittest.TestCase):
def test_read_wrong_compression_type(self):
b = b'FORM' + struct.pack('>L', 4) + b'AIFC'
b += b'COMM' + struct.pack('>LhlhhLL', 23, 0, 0, 0, 0, 0, 0)
b += b'COMM' + struct.pack('>LhlhhLL', 23, 1, 0, 8,
0x4000 | 12, 11025<<18, 0)
b += b'WRNG' + struct.pack('B', 0)
self.assertRaises(aifc.Error, aifc.open, io.BytesIO(b))
def test_read_wrong_number_of_channels(self):
for nchannels in 0, -1:
b = b'FORM' + struct.pack('>L', 4) + b'AIFC'
b += b'COMM' + struct.pack('>LhlhhLL', 38, nchannels, 0, 8,
0x4000 | 12, 11025<<18, 0)
b += b'NONE' + struct.pack('B', 14) + b'not compressed' + b'\x00'
b += b'SSND' + struct.pack('>L', 8) + b'\x00' * 8
with self.assertRaisesRegex(aifc.Error, 'bad # of channels'):
aifc.open(io.BytesIO(b))
def test_read_wrong_sample_width(self):
for sampwidth in 0, -1:
b = b'FORM' + struct.pack('>L', 4) + b'AIFC'
b += b'COMM' + struct.pack('>LhlhhLL', 38, 1, 0, sampwidth,
0x4000 | 12, 11025<<18, 0)
b += b'NONE' + struct.pack('B', 14) + b'not compressed' + b'\x00'
b += b'SSND' + struct.pack('>L', 8) + b'\x00' * 8
with self.assertRaisesRegex(aifc.Error, 'bad sample width'):
aifc.open(io.BytesIO(b))
def test_read_wrong_marks(self):
b = b'FORM' + struct.pack('>L', 4) + b'AIFF'
b += b'COMM' + struct.pack('>LhlhhLL', 18, 0, 0, 0, 0, 0, 0)
b += b'COMM' + struct.pack('>LhlhhLL', 18, 1, 0, 8,
0x4000 | 12, 11025<<18, 0)
b += b'SSND' + struct.pack('>L', 8) + b'\x00' * 8
b += b'MARK' + struct.pack('>LhB', 3, 1, 1)
with self.assertWarns(UserWarning) as cm:
@ -293,7 +316,8 @@ class AIFCLowLevelTest(unittest.TestCase):
def test_read_comm_kludge_compname_even(self):
b = b'FORM' + struct.pack('>L', 4) + b'AIFC'
b += b'COMM' + struct.pack('>LhlhhLL', 18, 0, 0, 0, 0, 0, 0)
b += b'COMM' + struct.pack('>LhlhhLL', 18, 1, 0, 8,
0x4000 | 12, 11025<<18, 0)
b += b'NONE' + struct.pack('B', 4) + b'even' + b'\x00'
b += b'SSND' + struct.pack('>L', 8) + b'\x00' * 8
with self.assertWarns(UserWarning) as cm:
@ -303,7 +327,8 @@ class AIFCLowLevelTest(unittest.TestCase):
def test_read_comm_kludge_compname_odd(self):
b = b'FORM' + struct.pack('>L', 4) + b'AIFC'
b += b'COMM' + struct.pack('>LhlhhLL', 18, 0, 0, 0, 0, 0, 0)
b += b'COMM' + struct.pack('>LhlhhLL', 18, 1, 0, 8,
0x4000 | 12, 11025<<18, 0)
b += b'NONE' + struct.pack('B', 3) + b'odd'
b += b'SSND' + struct.pack('>L', 8) + b'\x00' * 8
with self.assertWarns(UserWarning) as cm: