tests: don't check for invalid parameter decoding in python 3 (#35425)

tests/test_public.py

@@ -12,6 +12,7 @@ from django.contrib.auth.models import User, Group
 from django.core.urlresolvers import reverse
 from django.db import connection
 from django.utils.http import quote
+from django.utils import six
 from django.utils.six.moves.urllib import parse as urlparse
 from django.test import override_settings
 from django.test.utils import CaptureQueriesContext
@@ -86,7 +87,8 @@ def test_mellon_login(app):
         assert urlparse.urlparse(resp.location).path == '/accounts/mellon/login/'
         resp = app.get('/login/?next=whatever')
         assert urlparse.urlparse(resp.location).query == 'next=whatever'
-        resp = app.get('/login/?next=%e0%40', status=400)
+        if six.PY2:
+            resp = app.get('/login/?next=%e0%40', status=400)
 
 def test_page_contents_group_presence(app, normal_user):
     group = Group(name='plop')