Added test_login_logout module.

tests/auth_tests/test_login_logout.py

@@ -0,0 +1,95 @@
+from django.contrib import auth
+from django.contrib.auth.models import AnonymousUser, User
+from django.http import HttpRequest
+from django.test import TestCase
+
+
+class TestLogin(TestCase):
+    @classmethod
+    def setUpTestData(cls):
+        cls.user = User.objects.create_user(username="testuser", password="password")
+
+    def setUp(self):
+        self.request = HttpRequest()
+        self.request.session = self.client.session
+
+    def test_success(self):
+        """
+        Logs in the user and sets the user in the request's session.
+        """
+        auth.login(self.request, self.user)
+
+        self.assertEqual(self.request.session[auth.SESSION_KEY], str(self.user.pk))
+
+    def test_inactive_user(self):
+        """
+        Does not verify that the user is allowed to log in.
+        """
+        self.user.is_active = False
+        self.user.save(update_fields=["is_active"])
+
+        auth.login(self.request, self.user)
+
+        self.assertEqual(self.request.session[auth.SESSION_KEY], str(self.user.pk))
+
+    def test_without_user_no_request_user(self):
+        with self.assertRaisesMessage(
+            AttributeError,
+            "'HttpRequest' object has no attribute 'user'",
+        ):
+            auth.login(self.request, None)
+
+    def test_without_user_anonymous_request(self):
+        self.request.user = AnonymousUser()
+        with self.assertRaisesMessage(
+            AttributeError,
+            "'AnonymousUser' object has no attribute '_meta'",
+        ):
+            auth.login(self.request, None)
+
+    def test_without_user_authenticated_request(self):
+        self.request.user = self.user
+
+        self.assertNotIn(auth.SESSION_KEY, self.request.session)
+
+        auth.login(self.request, None)
+
+        self.assertEqual(self.request.session[auth.SESSION_KEY], str(self.user.pk))
+
+
+class TestLogout(TestCase):
+    @classmethod
+    def setUpTestData(cls):
+        cls.user = User.objects.create_user(username="testuser", password="password")
+
+    def setUp(self):
+        self.request = HttpRequest()
+        self.request.session = self.client.session
+        self.request.user = AnonymousUser()
+
+    def test_logout_without_login(self):
+        """
+        Resets the session regardless of whether a user is logged in.
+        """
+        self.request.session["test"] = "test"
+        session_key = self.request.session.session_key
+
+        auth.logout(self.request)
+
+        self.assertNotEqual(session_key, self.request.session.session_key)
+        self.assertNotIn("test", self.request.session)
+
+    def test_logout_after_login(self):
+        """
+        Logs out the user and removes the user from the request's session.
+        """
+        # Log in the user.
+        auth.login(self.request, self.user)
+        session_key = self.request.session.session_key
+        self.assertEqual(self.request.session[auth.SESSION_KEY], str(self.user.pk))
+
+        # Log out the user.
+        auth.logout(self.request)
+
+        self.assertNotEqual(session_key, self.request.session.session_key)
+        self.assertNotIn(auth.SESSION_KEY, self.request.session)