Fixed #26232 -- Fixed Popen mocking environment in i18n tests

        with self.assertRaises(CommandError):

            call_command('compilemessages', locale=['ja'], verbosity=0)

    # We will check the output of msgfmt, so we need to make sure its output

    # is unaffected by the current locale.

    @mock.patch('django.core.management.utils.Popen',

        lambda *args, **kwargs: Popen(*args, env={'LANG': 'C'}, **kwargs))

    def test_msgfmt_error_including_non_ascii(self):

        # po file contains invalid msgstr content (triggers non-ascii error content).

        mo_file = 'locale/ko/LC_MESSAGES/django.mo'

        self.addCleanup(self.rmfile, os.path.join(self.test_dir, mo_file))

        # Make sure the output of msgfmt is unaffected by the current locale.

        env = os.environ.copy()

        env.update({'LANG': 'C'})

        with mock.patch('django.core.management.utils.Popen',

                lambda *args, **kwargs: Popen(*args, env=env, **kwargs)):

            if six.PY2:

                # Various assertRaises on PY2 don't support unicode error messages.

                try: