Method test_streamwriter

Lib/test/multibytecodec_support.py:249–271

(self)

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

    def test_streamwriter(self):
        readfuncs = ('read', 'readline', 'readlines')
        UTF8Reader = codecs.getreader('utf-8')
        for name in readfuncs:
            for sizehint in [None] + list(range(1, 33)) + \
                            [64, 128, 256, 512, 1024]:
                istream = UTF8Reader(BytesIO(self.tstring[1]))
                ostream = self.writer(BytesIO())
                func = getattr(istream, name)
                while 1:
                    if sizehint is not None:
                        data = func(sizehint)
                    else:
                        data = func()

                    if not data:
                        break
                    if name == "readlines":
                        ostream.writelines(data)
                    else:
                        ostream.write(data)

                self.assertEqual(ostream.getvalue(), self.tstring[0])

    def test_streamwriter_reset_no_pending(self):
        # Issue #23247: Calling reset() on a fresh StreamWriter instance