| Victor Stinner | 7f3652e | 2010-06-07 20:14:04 +0000 | [diff] [blame] | 1 | from test.support import run_unittest, TESTFN |
| 2 | import unittest |
| 3 | import os |
| 4 | |
| 5 | import sunau |
| 6 | |
| 7 | nchannels = 2 |
| 8 | sampwidth = 2 |
| 9 | framerate = 8000 |
| 10 | nframes = 100 |
| 11 | |
| 12 | class SunAUTest(unittest.TestCase): |
| 13 | |
| 14 | def setUp(self): |
| 15 | self.f = None |
| 16 | |
| 17 | def tearDown(self): |
| 18 | if self.f is not None: |
| 19 | self.f.close() |
| 20 | try: |
| 21 | os.remove(TESTFN) |
| 22 | except OSError: |
| 23 | pass |
| 24 | |
| 25 | def test_lin(self): |
| 26 | self.f = sunau.open(TESTFN, 'w') |
| 27 | self.f.setnchannels(nchannels) |
| 28 | self.f.setsampwidth(sampwidth) |
| 29 | self.f.setframerate(framerate) |
| 30 | self.f.setcomptype('NONE', 'not compressed') |
| 31 | output = b'\xff\x00\x12\xcc' * (nframes * nchannels * sampwidth // 4) |
| 32 | self.f.writeframes(output) |
| 33 | self.f.close() |
| 34 | |
| 35 | self.f = sunau.open(TESTFN, 'rb') |
| 36 | self.assertEqual(nchannels, self.f.getnchannels()) |
| 37 | self.assertEqual(sampwidth, self.f.getsampwidth()) |
| 38 | self.assertEqual(framerate, self.f.getframerate()) |
| 39 | self.assertEqual(nframes, self.f.getnframes()) |
| 40 | self.assertEqual('NONE', self.f.getcomptype()) |
| 41 | self.assertEqual(self.f.readframes(nframes), output) |
| 42 | self.f.close() |
| 43 | |
| 44 | def test_ulaw(self): |
| 45 | self.f = sunau.open(TESTFN, 'w') |
| 46 | self.f.setnchannels(nchannels) |
| 47 | self.f.setsampwidth(sampwidth) |
| 48 | self.f.setframerate(framerate) |
| 49 | self.f.setcomptype('ULAW', '') |
| 50 | # u-law compression is lossy, therefore we can't expect non-zero data |
| 51 | # to come back unchanged. |
| 52 | output = b'\0' * nframes * nchannels * sampwidth |
| 53 | self.f.writeframes(output) |
| 54 | self.f.close() |
| 55 | |
| 56 | self.f = sunau.open(TESTFN, 'rb') |
| 57 | self.assertEqual(nchannels, self.f.getnchannels()) |
| 58 | self.assertEqual(sampwidth, self.f.getsampwidth()) |
| 59 | self.assertEqual(framerate, self.f.getframerate()) |
| 60 | self.assertEqual(nframes, self.f.getnframes()) |
| 61 | self.assertEqual('ULAW', self.f.getcomptype()) |
| 62 | self.assertEqual(self.f.readframes(nframes), output) |
| 63 | self.f.close() |
| 64 | |
| 65 | |
| 66 | def test_main(): |
| 67 | run_unittest(SunAUTest) |
| 68 | |
| 69 | if __name__ == "__main__": |
| 70 | unittest.main() |