Avoided a deprecated alias on Python 3 in file_uploads test.

from django.test import override_settings

from django.utils.encoding import force_bytes

from django.utils.http import urlquote

from django.utils.six import BytesIO, StringIO

from django.utils.six import BytesIO, PY2, StringIO

from . import uploadhandler

from .models import FileModel

    def test_big_base64_newlines_upload(self):

        self._test_base64_upload(

            "Big data" * 68000, encode=base64.encodestring)

            # encodestring is a deprecated alias on Python 3

            "Big data" * 68000, encode=base64.encodestring if PY2 else base64.encodebytes)

    def test_unicode_file_name(self):

        tdir = sys_tempfile.mkdtemp()