Refs #28478 -- Deprecated TestCase's allow_database_queries and multi_db in favor of databases.

tests/migrations/test_base.py

@@ -18,7 +18,7 @@ class MigrationTestBase(TransactionTestCase):
     """
 
     available_apps = ["migrations"]
-    multi_db = True
+    databases = {'default', 'other'}
 
     def tearDown(self):
         # Reset applied-migrations state.

tests/migrations/test_commands.py

@@ -25,7 +25,7 @@ class MigrateTests(MigrationTestBase):
     """
     Tests running the migrate command.
     """
-    multi_db = True
+    databases = {'default', 'other'}
 
     @override_settings(MIGRATION_MODULES={"migrations": "migrations.test_migrations"})
     def test_migrate(self):

tests/migrations/test_loader.py

@@ -16,7 +16,7 @@ class RecorderTests(TestCase):
     """
     Tests recording migrations as applied or not.
     """
-    multi_db = True
+    databases = {'default', 'other'}
 
     def test_apply(self):
         """

tests/migrations/test_multidb.py

@@ -38,7 +38,7 @@ class MigrateWhenFooRouter:
 
 
 class MultiDBOperationTests(OperationTestBase):
-    multi_db = True
+    databases = {'default', 'other'}
 
     def _test_create_model(self, app_label, should_run):
         """