[1.8.x] Fixed #24848 -- Fixed ValueError for faulty migrations module.

Added apps to unmigrated apps if the migrations module is a file
or a folder missing __init__.py.

Thanks to Ernest0x for the bug report.

Backport of d73176a84273c06fa11075c65293ec28497a8423 from master

1 files changed, 10 insertions, 2 deletions

diff --git a/tests/migrations/test_loader.py b/tests/migrations/test_loader.py
index b189da0721..070ca2a86c 100644
--- a/tests/migrations/test_loader.py
+++ b/tests/migrations/test_loader.py
@@ -164,12 +164,20 @@ class LoaderTests(TestCase):
 
     def test_load_module_file(self):
         with override_settings(MIGRATION_MODULES={"migrations": "migrations.faulty_migrations.file"}):
-            MigrationLoader(connection)
+            loader = MigrationLoader(connection)
+            self.assertIn(
+                "migrations", loader.unmigrated_apps,
+                "App with migrations module file not in unmigrated apps."
+            )
 
     @skipIf(six.PY2, "PY2 doesn't load empty dirs.")
     def test_load_empty_dir(self):
         with override_settings(MIGRATION_MODULES={"migrations": "migrations.faulty_migrations.namespace"}):
-            MigrationLoader(connection)
+            loader = MigrationLoader(connection)
+            self.assertIn(
+                "migrations", loader.unmigrated_apps,
+                "App missing __init__.py in migrations module not in unmigrated apps."
+            )
 
     @override_settings(MIGRATION_MODULES={"migrations": "migrations.test_migrations_squashed"})
     def test_loading_squashed(self):