Merge branch 'master' into custom-states

docs/docs/faq.md

@@ -67,6 +67,22 @@ For more information, refer to the installation guides:
 
 Before performing an update, check the release notes! Any *breaking changes* (changes which require user intervention) will be clearly noted.
 
+### Cannot import name get_storage_class
+
+When running an install or update, you may see an error similar to:
+
+```python
+ImportError: cannot import name 'get_storage_class' from 'django.core.files.storage'
+```
+
+In such a situation, it is likely that the automatic backup procedure is unable to run, as the required python packages are not yet installed or are unavailable.
+
+To proceed in this case, you can skip the backup procedure by running the `invoke update` command with the `--skip-backup` flag:
+
+```bash
+invoke update --skip-backup
+```
+
 ### Feature *x* does not work after update
 
 If a particular menu / item is not visible after updating InvenTree, or a certain function no longer seems to work, it may be due to your internet browser caching old versions of CSS and JavaScript files.

src/backend/InvenTree/InvenTree/test_tasks.py

@@ -143,6 +143,13 @@ class InvenTreeTaskTests(TestCase):
         os.environ['INVENTREE_AUTO_UPDATE'] = 'True'
         InvenTree.tasks.check_for_migrations()
 
+        # List all current migrations for the InvenTree app
+        migration_dir = os.path.join(
+            os.path.dirname(os.path.abspath(__file__)), 'migrations'
+        )
+
+        migration_files = os.listdir(migration_dir)
+
         # Create migration
         self.assertEqual(len(InvenTree.tasks.get_migration_plan()), 0)
         call_command('makemigrations', ['InvenTree', '--empty'], interactive=False)
@@ -165,6 +172,19 @@ class InvenTreeTaskTests(TestCase):
         except IndexError:  # pragma: no cover
             pass
 
+        # Let's remove the newly created migration file
+        for fn in os.listdir(migration_dir):
+            fn = os.path.join(migration_dir, fn)
+
+            if (
+                os.path.isfile(fn)
+                and fn not in migration_files
+                and 'auto' in fn
+                and fn.endswith('.py')
+            ):
+                print('Removing dummy migration file:', fn)
+                os.remove(fn)
+
     def test_failed_task_notification(self):
         """Test that a failed task will generate a notification."""
         from common.models import NotificationEntry, NotificationMessage