mirror of https://github.com/python/cpython
118 lines
4.2 KiB
Python
118 lines
4.2 KiB
Python
from test.support import TESTFN, unlink
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import wave
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import unittest
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nchannels = 2
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sampwidth = 2
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framerate = 8000
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nframes = 100
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class TestWave(unittest.TestCase):
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def setUp(self):
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self.f = None
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def tearDown(self):
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if self.f is not None:
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self.f.close()
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unlink(TESTFN)
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def test_it(self, test_rounding=False):
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self.f = wave.open(TESTFN, 'wb')
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self.f.setnchannels(nchannels)
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self.f.setsampwidth(sampwidth)
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if test_rounding:
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self.f.setframerate(framerate - 0.1)
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else:
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self.f.setframerate(framerate)
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self.f.setnframes(nframes)
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output = b'\0' * nframes * nchannels * sampwidth
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self.f.writeframes(output)
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self.f.close()
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self.f = wave.open(TESTFN, 'rb')
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self.assertEqual(nchannels, self.f.getnchannels())
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self.assertEqual(sampwidth, self.f.getsampwidth())
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self.assertEqual(framerate, self.f.getframerate())
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self.assertEqual(nframes, self.f.getnframes())
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self.assertEqual(self.f.readframes(nframes), output)
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def test_fractional_framerate(self):
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"""
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Addresses [ 1512791 ] module wave does no rounding
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Floating point framerates should be rounded, rather than truncated.
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"""
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self.test_it(test_rounding=True)
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def test_issue7681(self):
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self.f = wave.open(TESTFN, 'wb')
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self.f.setnchannels(nchannels)
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self.f.setsampwidth(sampwidth)
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self.f.setframerate(framerate)
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# Don't call setnframes, make _write_header divide to figure it out
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output = b'\0' * nframes * nchannels * sampwidth
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self.f.writeframes(output)
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def test_getparams(self):
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self.f = wave.open(TESTFN, 'wb')
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self.f.setnchannels(nchannels)
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self.f.setsampwidth(sampwidth)
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self.f.setframerate(framerate)
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self.f.close()
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self.f = wave.open(TESTFN, 'rb')
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params = self.f.getparams()
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self.assertEqual(params.nchannels, self.f.getnchannels())
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self.assertEqual(params.nframes, self.f.getnframes())
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self.assertEqual(params.sampwidth, self.f.getsampwidth())
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self.assertEqual(params.framerate, self.f.getframerate())
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self.assertEqual(params.comptype, self.f.getcomptype())
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self.assertEqual(params.compname, self.f.getcompname())
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def test_wave_write_context_manager_calls_close(self):
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# Close checks for a minimum header and will raise an error
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# if it is not set, so this proves that close is called.
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with self.assertRaises(wave.Error):
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with wave.open(TESTFN, 'wb') as f:
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pass
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with self.assertRaises(wave.Error):
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with open(TESTFN, 'wb') as testfile:
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with wave.open(testfile):
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pass
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def test_context_manager_with_open_file(self):
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with open(TESTFN, 'wb') as testfile:
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with wave.open(testfile) as f:
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f.setnchannels(nchannels)
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f.setsampwidth(sampwidth)
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f.setframerate(framerate)
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self.assertFalse(testfile.closed)
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with open(TESTFN, 'rb') as testfile:
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with wave.open(testfile) as f:
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self.assertFalse(f.getfp().closed)
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params = f.getparams()
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self.assertEqual(params.nchannels, nchannels)
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self.assertEqual(params.sampwidth, sampwidth)
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self.assertEqual(params.framerate, framerate)
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self.assertIsNone(f.getfp())
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self.assertFalse(testfile.closed)
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def test_context_manager_with_filename(self):
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# If the file doesn't get closed, this test won't fail, but it will
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# produce a resource leak warning.
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with wave.open(TESTFN, 'wb') as f:
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f.setnchannels(nchannels)
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f.setsampwidth(sampwidth)
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f.setframerate(framerate)
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with wave.open(TESTFN) as f:
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self.assertFalse(f.getfp().closed)
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params = f.getparams()
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self.assertEqual(params.nchannels, nchannels)
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self.assertEqual(params.sampwidth, sampwidth)
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self.assertEqual(params.framerate, framerate)
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self.assertIsNone(f.getfp())
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if __name__ == '__main__':
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unittest.main()
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