test_audioop.py 文件源码

def test_add(self):
        for w in 1, 2, 3, 4:
            self.assertEqual(audioop.add(b'', b'', w), b'')
            self.assertEqual(audioop.add(bytearray(), bytearray(), w), b'')
            self.assertEqual(audioop.add(memoryview(b''), memoryview(b''), w), b'')
            self.assertEqual(audioop.add(datas[w], b'\0' * len(datas[w]), w),
                             datas[w])
        self.assertEqual(audioop.add(datas[1], datas[1], 1),
                         b'\x00\x24\x7f\x80\x7f\x80\xfe')
        self.assertEqual(audioop.add(datas[2], datas[2], 2),
                packs[2](0, 0x2468, 0x7fff, -0x8000, 0x7fff, -0x8000, -2))
        self.assertEqual(audioop.add(datas[3], datas[3], 3),
                packs[3](0, 0x2468ac, 0x7fffff, -0x800000,
                       0x7fffff, -0x800000, -2))
        self.assertEqual(audioop.add(datas[4], datas[4], 4),
                packs[4](0, 0x2468acf0, 0x7fffffff, -0x80000000,
                       0x7fffffff, -0x80000000, -2))