change company view to descending order by created date

companies/tests.py

@@ -274,6 +274,25 @@ class CompanyViewSetTest(APITestCase):
         # Assert instance doesn't exists anymore on db
         self.assertFalse(self.model.objects.filter(id=instance.pk).exists())
 
+    # functionalities
+    def test_descending_order(self):
+        instances = [self.factory(), self.factory()]
+
+        # Authenticate user
+        token = get_tokens_for_user(self.user)
+        self.client.credentials(HTTP_AUTHORIZATION=f"Bearer {token['access']}")
+
+        # Request list
+        response = self.client.get(self.endpoint)
+
+        # Assert access is allowed
+        self.assertEqual(response.status_code, status.HTTP_200_OK)
+
+        # Assert all instances are returned
+        self.assertEqual(len(instances), len(response.data))
+        # check order
+        self.assertTrue(response.data[0]['id'] > response.data[1]['id'])
+
 
 class MyCompanyViewTest(APITestCase):
     """CompanyViewset tests