test_audioop.py 文件源码

def test_ratecv(self):
        for w in 1, 2, 3, 4:
            self.assertEqual(audioop.ratecv(b'', w, 1, 8000, 8000, None),
                             (b'', (-1, ((0, 0),))))
            self.assertEqual(audioop.ratecv(bytearray(), w, 1, 8000, 8000, None),
                             (b'', (-1, ((0, 0),))))
            self.assertEqual(audioop.ratecv(memoryview(b''), w, 1, 8000, 8000, None),
                             (b'', (-1, ((0, 0),))))
            self.assertEqual(audioop.ratecv(b'', w, 5, 8000, 8000, None),
                             (b'', (-1, ((0, 0),) * 5)))
            self.assertEqual(audioop.ratecv(b'', w, 1, 8000, 16000, None),
                             (b'', (-2, ((0, 0),))))
            self.assertEqual(audioop.ratecv(datas[w], w, 1, 8000, 8000, None)[0],
                             datas[w])
        state = None
        d1, state = audioop.ratecv(b'\x00\x01\x02', 1, 1, 8000, 16000, state)
        d2, state = audioop.ratecv(b'\x00\x01\x02', 1, 1, 8000, 16000, state)
        self.assertEqual(d1 + d2, b'\000\000\001\001\002\001\000\000\001\001\002')

        for w in 1, 2, 3, 4:
            d0, state0 = audioop.ratecv(datas[w], w, 1, 8000, 16000, None)
            d, state = b'', None
            for i in range(0, len(datas[w]), w):
                d1, state = audioop.ratecv(datas[w][i:i + w], w, 1,
                                           8000, 16000, state)
                d += d1
            self.assertEqual(d, d0)
            self.assertEqual(state, state0)