test_multibytecodec_support.py 文件源码

def test_incrementaldecoder(self):
        UTF8Writer = codecs.getwriter('utf-8')
        for sizehint in [None, -1] + list(range(1, 33)) + \
                        [64, 128, 256, 512, 1024]:
            istream = BytesIO(self.tstring[0])
            ostream = UTF8Writer(BytesIO())
            decoder = self.incrementaldecoder()
            while 1:
                data = istream.read(sizehint)
                if not data:
                    break
                else:
                    u = decoder.decode(data)
                    ostream.write(u)

            self.assertEqual(ostream.getvalue(), self.tstring[1])