Add unittests for auth stack

Fixes #2980

InvenTree/InvenTree/test_middleware.py

@@ -0,0 +1,49 @@
+"""Tests for middleware functions"""
+
+from django.test import TestCase
+
+from django.contrib.auth import get_user_model
+from django.urls import reverse
+
+
+class MiddlewareTests(TestCase):
+    """Test for middleware functions"""
+
+    def check_path(self, url, code=200, **kwargs):
+        response = self.client.get(url, HTTP_ACCEPT='application/json', **kwargs)
+        self.assertEqual(response.status_code, code)
+        return response
+
+    def setUp(self):
+        super().setUp()
+
+        # Create a user
+        user = get_user_model()
+
+        self.user = user.objects.create_user(username='username', email='user@email.com', password='password')
+        self.client.login(username='username', password='password')
+
+    def test_AuthRequiredMiddleware(self):
+        """Test the auth middleware"""
+
+        # test that /api/ routes go through
+        self.check_path(reverse('api-inventree-info'))
+
+        # logout
+        self.client.logout()
+
+        # check that static files go through
+        self.check_path('/static/admin/fonts/LICENSE.txt')
+
+        # check that account things go through
+        self.check_path(reverse('account_login'))
+
+        # logout goes diretly to login
+        self.check_path(reverse('account_logout'))
+
+        # check that frontend code is redirected to login
+        response = self.check_path(reverse('stats'), 302)
+        self.assertEqual(response.url, '/accounts/login/?next=/stats/')
+
+        # check that a 401 is raised
+        self.check_path(reverse('settings.js'), 401)