created new FT file at functional_tests.test_my_lists, where the first test model focuses on the integrity of cookie sessions; much of FT login/logout logic offloaded to helper functions in .base;logout django templating added to base.html

src/functional_tests/test_my_lists.py

@@ -0,0 +1,25 @@
+from django.conf import settings
+from django.contrib.auth import BACKEND_SESSION_KEY, SESSION_KEY, get_user_model
+from django.contrib.sessions.backends.db import SessionStore
+from .base import FunctionalTest
+
+User = get_user_model()
+
+
+class MyListsTest(FunctionalTest):
+    def create_pre_authenticated_session(self, email):
+        user = User.objects.create(email=email)
+        session = SessionStore()
+        session[SESSION_KEY] = user.pk
+        session[BACKEND_SESSION_KEY] = settings.AUTHENTICATION_BACKENDS[0]
+        session.save()
+        ## to set a cookie we need to first visit the domain
+        ## 404 pages load the quickest!
+        self.browser.get(self.live_server_url + "/404_no_such_url/")
+        self.browser.add_cookie(
+            dict(
+                name=settings.SESSION_COOKIE_NAME,
+                value=session.session_key,
+                path="/",
+            )
+        )