diff --git a/myhpi/tests/core/setup.py b/myhpi/tests/core/setup.py
index eb0eb575..3cccb8ee 100644
--- a/myhpi/tests/core/setup.py
+++ b/myhpi/tests/core/setup.py
@@ -41,7 +41,7 @@ def create_users():
 
 def create_groups(users):
     superuser, student, student_representative = users
-    students = Group.objects.create(name="Students")
+    students = Group.objects.create(name="Student")
     fsr = Group.objects.create(name="Student Representative Group")
 
     students.user_set.add(superuser)
diff --git a/myhpi/tests/core/test_auth.py b/myhpi/tests/core/test_auth.py
new file mode 100644
index 00000000..d81e7b4b
--- /dev/null
+++ b/myhpi/tests/core/test_auth.py
@@ -0,0 +1,49 @@
+from myhpi.core.auth import MyHPIOIDCAB
+from myhpi.tests.core.utils import MyHPIPageTestCase
+
+
+class AuthTests(MyHPIPageTestCase):
+    def setUp(self):
+        super().setUp()
+        self.auth_backend = MyHPIOIDCAB()
+
+    def test_create_user(self):
+        claims = {
+            "email": "ali.gator@example.org",
+            "given_name": "Ali",
+            "family_name": "Gator",
+            "sub": "ali.gator",
+        }
+        user = self.auth_backend.create_user(claims)
+        self.assertEqual(user.username, "ali.gator")
+        self.assertFalse(user.groups.filter(name="Student").exists())
+
+        matching_users = self.auth_backend.filter_users_by_claims(claims)
+        self.assertEqual(len(matching_users), 1)
+
+    def test_create_student(self):
+        claims = {
+            "email": "grace.hopper@student.uni-potsdam.example.com",
+            "given_name": "Grace",
+            "family_name": "Hopper",
+            "sub": "grace.hopper",
+        }
+        user = self.auth_backend.create_user(claims)
+        self.assertEqual(user.username, "grace.hopper")
+        self.assertEqual(user.email, "grace.hopper@student.example.com")
+        self.assertTrue(user.groups.filter(name="Student").exists())
+
+    def test_update_user(self):
+        claims = {
+            "email": "jw.goethe@weimar.de",
+            "given_name": "Johann Wolfgang",
+            "family_name": "Goethe",
+            "sub": "jw.goethe",
+        }
+        user = self.auth_backend.create_user(claims)
+        self.assertEqual(user.username, "jw.goethe")
+        self.assertEqual(user.last_name, "Goethe")
+        claims["family_name"] = "von Goethe"
+        user = self.auth_backend.update_user(user, claims)
+        self.assertEqual(user.first_name, "Johann Wolfgang")
+        self.assertEqual(user.last_name, "von Goethe")