add a test for the weekday api

conftest.py

@@ -36,3 +36,9 @@ def create_admin_user():
         result['group'] = group
         return result
     return _create_admin_user
+
+
+@pytest.fixture
+def api_client():
+    from rest_framework.test import APIClient
+    return APIClient()

core/tests/test_rest.py

@@ -0,0 +1,10 @@
+import pytest
+
+from django.urls import reverse
+
+
+@pytest.mark.django_db
+def test_unauthorized_request(api_client):
+    url = reverse('weekday-list')
+    response = api_client.get(url)
+    assert response.status_code == 403