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1import unittest
2from test import audiotests
3from test import support
4from audioop import byteswap
5import io
6import struct
7import sys
8import wave
9
10
11class WaveTest(audiotests.AudioWriteTests,
12               audiotests.AudioTestsWithSourceFile):
13    module = wave
14
15
16class WavePCM8Test(WaveTest, unittest.TestCase):
17    sndfilename = 'pluck-pcm8.wav'
18    sndfilenframes = 3307
19    nchannels = 2
20    sampwidth = 1
21    framerate = 11025
22    nframes = 48
23    comptype = 'NONE'
24    compname = 'not compressed'
25    frames = bytes.fromhex("""\
26      827F CB80 B184 0088 4B86 C883 3F81 837E 387A 3473 A96B 9A66 \
27      6D64 4662 8E60 6F60 D762 7B68 936F 5877 177B 757C 887B 5F7B \
28      917A BE7B 3C7C E67F 4F84 C389 418E D192 6E97 0296 FF94 0092 \
29      C98E D28D 6F8F 4E8F 648C E38A 888A AB8B D18E 0B91 368E C48A \
30      """)
31
32
33class WavePCM16Test(WaveTest, unittest.TestCase):
34    sndfilename = 'pluck-pcm16.wav'
35    sndfilenframes = 3307
36    nchannels = 2
37    sampwidth = 2
38    framerate = 11025
39    nframes = 48
40    comptype = 'NONE'
41    compname = 'not compressed'
42    frames = bytes.fromhex("""\
43      022EFFEA 4B5C00F9 311404EF 80DC0843 CBDF06B2 48AA03F3 BFE701B2 036BFE7C \
44      B857FA3E B4B2F34F 2999EBCA 1A5FE6D7 EDFCE491 C626E279 0E05E0B8 EF27E02D \
45      5754E275 FB31E843 1373EF89 D827F72C 978BFB7A F5F7FC11 0866FB9C DF30FB42 \
46      117FFA36 3EE4FB5D BC75FCB6 66D5FF5F CF16040E 43220978 C1BC0EC8 511F12A4 \
47      EEDF1755 82061666 7FFF1446 80001296 499C0EB2 52BA0DB9 EFB70F5C CE400FBC \
48      E4B50CEB 63440A5A 08CA0A1F 2BBA0B0B 51460E47 8BCB113C B6F50EEA 44150A59 \
49      """)
50    if sys.byteorder != 'big':
51        frames = byteswap(frames, 2)
52
53
54class WavePCM24Test(WaveTest, unittest.TestCase):
55    sndfilename = 'pluck-pcm24.wav'
56    sndfilenframes = 3307
57    nchannels = 2
58    sampwidth = 3
59    framerate = 11025
60    nframes = 48
61    comptype = 'NONE'
62    compname = 'not compressed'
63    frames = bytes.fromhex("""\
64      022D65FFEB9D 4B5A0F00FA54 3113C304EE2B 80DCD6084303 \
65      CBDEC006B261 48A99803F2F8 BFE82401B07D 036BFBFE7B5D \
66      B85756FA3EC9 B4B055F3502B 299830EBCB62 1A5CA7E6D99A \
67      EDFA3EE491BD C625EBE27884 0E05A9E0B6CF EF2929E02922 \
68      5758D8E27067 FB3557E83E16 1377BFEF8402 D82C5BF7272A \
69      978F16FB7745 F5F865FC1013 086635FB9C4E DF30FCFB40EE \
70      117FE0FA3438 3EE6B8FB5AC3 BC77A3FCB2F4 66D6DAFF5F32 \
71      CF13B9041275 431D69097A8C C1BB600EC74E 5120B912A2BA \
72      EEDF641754C0 8207001664B7 7FFFFF14453F 8000001294E6 \
73      499C1B0EB3B2 52B73E0DBCA0 EFB2B20F5FD8 CE3CDB0FBE12 \
74      E4B49C0CEA2D 6344A80A5A7C 08C8FE0A1FFE 2BB9860B0A0E \
75      51486F0E44E1 8BCC64113B05 B6F4EC0EEB36 4413170A5B48 \
76      """)
77    if sys.byteorder != 'big':
78        frames = byteswap(frames, 3)
79
80
81class WavePCM32Test(WaveTest, unittest.TestCase):
82    sndfilename = 'pluck-pcm32.wav'
83    sndfilenframes = 3307
84    nchannels = 2
85    sampwidth = 4
86    framerate = 11025
87    nframes = 48
88    comptype = 'NONE'
89    compname = 'not compressed'
90    frames = bytes.fromhex("""\
91      022D65BCFFEB9D92 4B5A0F8000FA549C 3113C34004EE2BC0 80DCD680084303E0 \
92      CBDEC0C006B26140 48A9980003F2F8FC BFE8248001B07D92 036BFB60FE7B5D34 \
93      B8575600FA3EC920 B4B05500F3502BC0 29983000EBCB6240 1A5CA7A0E6D99A60 \
94      EDFA3E80E491BD40 C625EB80E27884A0 0E05A9A0E0B6CFE0 EF292940E0292280 \
95      5758D800E2706700 FB3557D8E83E1640 1377BF00EF840280 D82C5B80F7272A80 \
96      978F1600FB774560 F5F86510FC101364 086635A0FB9C4E20 DF30FC40FB40EE28 \
97      117FE0A0FA3438B0 3EE6B840FB5AC3F0 BC77A380FCB2F454 66D6DA80FF5F32B4 \
98      CF13B980041275B0 431D6980097A8C00 C1BB60000EC74E00 5120B98012A2BAA0 \
99      EEDF64C01754C060 820700001664B780 7FFFFFFF14453F40 800000001294E6E0 \
100      499C1B000EB3B270 52B73E000DBCA020 EFB2B2E00F5FD880 CE3CDB400FBE1270 \
101      E4B49CC00CEA2D90 6344A8800A5A7CA0 08C8FE800A1FFEE0 2BB986C00B0A0E00 \
102      51486F800E44E190 8BCC6480113B0580 B6F4EC000EEB3630 441317800A5B48A0 \
103      """)
104    if sys.byteorder != 'big':
105        frames = byteswap(frames, 4)
106
107
108class MiscTestCase(audiotests.AudioMiscTests, unittest.TestCase):
109    module = wave
110
111    def test__all__(self):
112        blacklist = {'WAVE_FORMAT_PCM'}
113        support.check__all__(self, wave, blacklist=blacklist)
114
115
116class WaveLowLevelTest(unittest.TestCase):
117
118    def test_read_no_chunks(self):
119        b = b'SPAM'
120        with self.assertRaises(EOFError):
121            wave.open(io.BytesIO(b))
122
123    def test_read_no_riff_chunk(self):
124        b = b'SPAM' + struct.pack('<L', 0)
125        with self.assertRaisesRegex(wave.Error,
126                                    'file does not start with RIFF id'):
127            wave.open(io.BytesIO(b))
128
129    def test_read_not_wave(self):
130        b = b'RIFF' + struct.pack('<L', 4) + b'SPAM'
131        with self.assertRaisesRegex(wave.Error,
132                                    'not a WAVE file'):
133            wave.open(io.BytesIO(b))
134
135    def test_read_no_fmt_no_data_chunk(self):
136        b = b'RIFF' + struct.pack('<L', 4) + b'WAVE'
137        with self.assertRaisesRegex(wave.Error,
138                                    'fmt chunk and/or data chunk missing'):
139            wave.open(io.BytesIO(b))
140
141    def test_read_no_data_chunk(self):
142        b = b'RIFF' + struct.pack('<L', 28) + b'WAVE'
143        b += b'fmt ' + struct.pack('<LHHLLHH', 16, 1, 1, 11025, 11025, 1, 8)
144        with self.assertRaisesRegex(wave.Error,
145                                    'fmt chunk and/or data chunk missing'):
146            wave.open(io.BytesIO(b))
147
148    def test_read_no_fmt_chunk(self):
149        b = b'RIFF' + struct.pack('<L', 12) + b'WAVE'
150        b += b'data' + struct.pack('<L', 0)
151        with self.assertRaisesRegex(wave.Error, 'data chunk before fmt chunk'):
152            wave.open(io.BytesIO(b))
153
154    def test_read_wrong_form(self):
155        b = b'RIFF' + struct.pack('<L', 36) + b'WAVE'
156        b += b'fmt ' + struct.pack('<LHHLLHH', 16, 2, 1, 11025, 11025, 1, 1)
157        b += b'data' + struct.pack('<L', 0)
158        with self.assertRaisesRegex(wave.Error, 'unknown format: 2'):
159            wave.open(io.BytesIO(b))
160
161    def test_read_wrong_number_of_channels(self):
162        b = b'RIFF' + struct.pack('<L', 36) + b'WAVE'
163        b += b'fmt ' + struct.pack('<LHHLLHH', 16, 1, 0, 11025, 11025, 1, 8)
164        b += b'data' + struct.pack('<L', 0)
165        with self.assertRaisesRegex(wave.Error, 'bad # of channels'):
166            wave.open(io.BytesIO(b))
167
168    def test_read_wrong_sample_width(self):
169        b = b'RIFF' + struct.pack('<L', 36) + b'WAVE'
170        b += b'fmt ' + struct.pack('<LHHLLHH', 16, 1, 1, 11025, 11025, 1, 0)
171        b += b'data' + struct.pack('<L', 0)
172        with self.assertRaisesRegex(wave.Error, 'bad sample width'):
173            wave.open(io.BytesIO(b))
174
175
176if __name__ == '__main__':
177    unittest.main()
178