Support Django 1.4, 1.5 and 1.6

The default session serializer switched to JSONSerializer in Django-1.6.
Unfortunately, it can't serialize arbitrary objects (such as datetime
instances), there we have to stay with PickleSerializer (compare with
https://docs.djangoproject.com/en/1.6/topics/http/sessions/#write-your-own-serializer).

Sets Django==1.4 for the py27dj14 tox testenv. Don't relax the version
requirements just yet.

Change-Id: Ifb5a68950fa6a4a652a0fb0cb81048d89763ec3f

openstack_auth/tests/settings.py

@@ -48,3 +48,6 @@ USE_TZ = True
 OPENSTACK_KEYSTONE_MULTIDOMAIN_SUPPORT = False
 
 OPENSTACK_KEYSTONE_DEFAULT_DOMAIN = 'domain'
+
+# NOTE(saschpe): The openstack_auth.user.Token object isn't JSON-serializable ATM
+SESSION_SERIALIZER = 'django.contrib.sessions.serializers.PickleSerializer'

openstack_auth/tests/urls.py

@@ -11,7 +11,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-from django.conf.urls.defaults import patterns, include, url
+from django.conf.urls import patterns, include, url
 from django.views.generic import TemplateView
 
 from openstack_auth.utils import patch_middleware_get_user

openstack_auth/views.py

@@ -13,6 +13,7 @@
 
 import logging
 
+import django
 from django import shortcuts
 from django.conf import settings
 from django.contrib.auth import REDIRECT_FIELD_NAME
@@ -55,7 +56,13 @@ def login(request):
         initial.update({'region': requested_region})
 
     if request.method == "POST":
-        form = curry(Login, request)
+        # NOTE(saschpe): Since https://code.djangoproject.com/ticket/15198,
+        # the 'request' object is passed directly to AuthenticationForm in
+        # django.contrib.auth.views#login:
+        if django.VERSION >= (1, 6):
+            form = curry(Login)
+        else:
+            form = curry(Login, request)
     else:
         form = curry(Login, initial=initial)
 

tox.ini

@@ -12,6 +12,12 @@ deps = -r{toxinidir}/requirements.txt
        -r{toxinidir}/test-requirements.txt
 commands = python openstack_auth/tests/run_tests.py
 
+[testenv:py27dj14]
+deps = pbr>=0.5.21,<1.0
+       Django==1.4
+       python-keystoneclient>=0.3.2
+       -r{toxinidir}/test-requirements.txt
+
 [testenv:pep8]
 commands = flake8