Add unittests for the session adapter

tests/conftest.py

@@ -2,8 +2,6 @@ from __future__ import absolute_import, unicode_literals
 
 import pytest
 from wagtail.wagtailcore.models import Page, Site
-from wagtail_factories import SiteFactory
-from tests.factories.page import PageFactory
 
 pytest_plugins = [
     'tests.fixtures'
@@ -16,4 +14,3 @@ def django_db_setup(django_db_setup, django_db_blocker):
         # Remove some initial data that is brought by the sandbox module
         Site.objects.all().delete()
         Page.objects.all().exclude(depth=1).delete()
-