mirror of https://github.com/python/cpython
71 lines
2.1 KiB
Python
71 lines
2.1 KiB
Python
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from test.support import run_unittest, TESTFN
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import unittest
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import os
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import sunau
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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 SunAUTest(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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try:
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os.remove(TESTFN)
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except OSError:
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pass
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def test_lin(self):
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self.f = sunau.open(TESTFN, 'w')
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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.setcomptype('NONE', 'not compressed')
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output = b'\xff\x00\x12\xcc' * (nframes * nchannels * sampwidth // 4)
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self.f.writeframes(output)
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self.f.close()
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self.f = sunau.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('NONE', self.f.getcomptype())
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self.assertEqual(self.f.readframes(nframes), output)
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self.f.close()
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def test_ulaw(self):
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self.f = sunau.open(TESTFN, 'w')
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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.setcomptype('ULAW', '')
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# u-law compression is lossy, therefore we can't expect non-zero data
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# to come back unchanged.
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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 = sunau.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('ULAW', self.f.getcomptype())
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self.assertEqual(self.f.readframes(nframes), output)
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self.f.close()
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def test_main():
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run_unittest(SunAUTest)
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if __name__ == "__main__":
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unittest.main()
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