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129 lines
4.6 KiB
Python
129 lines
4.6 KiB
Python
from test.support import TESTFN, unlink
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import unittest
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import pickle
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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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unlink(TESTFN)
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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_getparams(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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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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params = self.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.assertEqual(params.nframes, nframes)
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self.assertEqual(params.comptype, 'ULAW')
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dump = pickle.dumps(params)
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self.assertEqual(pickle.loads(dump), params)
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def test_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(sunau.Error):
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with sunau.open(TESTFN, 'wb') as f:
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pass
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with self.assertRaises(sunau.Error):
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with open(TESTFN, 'wb') as testfile:
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with sunau.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 sunau.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 sunau.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[0], nchannels)
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self.assertEqual(params[1], sampwidth)
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self.assertEqual(params[2], 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 sunau.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 sunau.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[0], nchannels)
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self.assertEqual(params[1], sampwidth)
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self.assertEqual(params[2], 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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