Fixed #25388 -- Added an option to allow disabling of migrations during test database creation

django/db/migrations/loader.py

@@ -48,8 +48,10 @@ class MigrationLoader(object):
         if load:
             self.build_graph()
 
-    @classmethod
-    def migrations_module(cls, app_label):
+    def migrations_module(self, app_label):
+        if (self.connection is not None and
+                not self.connection.settings_dict.get('TEST', {}).get('MIGRATE', True)):
+            return None
         if app_label in settings.MIGRATION_MODULES:
             return settings.MIGRATION_MODULES[app_label]
         else:

django/db/migrations/questioner.py

@@ -37,7 +37,7 @@ class MigrationQuestioner(object):
             app_config = apps.get_app_config(app_label)
         except LookupError:         # It's a fake app.
             return self.defaults.get("ask_initial", False)
-        migrations_import_path = MigrationLoader.migrations_module(app_config.label)
+        migrations_import_path = MigrationLoader(None, load=False).migrations_module(app_config.label)
         if migrations_import_path is None:
             # It's an application with migrations disabled.
             return self.defaults.get("ask_initial", False)

django/db/migrations/writer.py

@@ -221,7 +221,7 @@ class MigrationWriter(object):
 
     @property
     def basedir(self):
-        migrations_package_name = MigrationLoader.migrations_module(self.migration.app_label)
+        migrations_package_name = MigrationLoader(None, load=False).migrations_module(self.migration.app_label)
 
         if migrations_package_name is None:
             raise ValueError(