Fixed #18902 -- Made force_bytes properly handle exception input

                # An Exception subclass containing non-ASCII data that doesn't

                # know how to print itself properly. We shouldn't raise a

                # further exception.

                return ' '.join([force_bytes(arg, encoding, strings_only,

                return b' '.join([force_bytes(arg, encoding, strings_only,

                        errors) for arg in s])

            return six.text_type(s).encode(encoding, errors)

    else:

# -*- encoding: utf-8 -*-

from __future__ import unicode_literals

from django.utils import unittest

from django.utils.encoding import force_bytes

class TestEncodingUtils(unittest.TestCase):

    def test_force_bytes_exception(self):

        """

        Test that force_bytes knows how to convert to bytes an exception

        containing non-ASCII characters in its args.

        """

        error_msg = "This is an exception, voilà"

        exc = ValueError(error_msg)

        result = force_bytes(exc)

        self.assertEqual(result, error_msg.encode('utf-8'))

from .dateparse import DateParseTests

from .datetime_safe import DatetimeTests

from .decorators import DecoratorFromMiddlewareTests

from .encoding import TestEncodingUtils

from .feedgenerator import FeedgeneratorTest

from .functional import FunctionalTestCase

from .html import TestUtilsHtml