Ticket #16885: 16885_fix.diff

django/db/backends/creation.py

@@ -2 +2 @@
 import time
 
 from django.conf import settings
+from django.db import connections
 
 # The prefix to put on the default database name when creating
 # the test database.
@@ -231 +232 @@
         # Confirm the feature set of the test database
         self.connection.features.confirm()
 
+        # Also confirm the features for all mirrors of the test database.
+        for conn in connections.all():
+            mirror = connections.databases[conn.alias].get('TEST_MIRROR')
+            if mirror and mirror == self.connection.alias:
+                conn.features.confirm()
+
         # Report syncdb messages at one level lower than that requested.
         # This ensures we don't get flooded with messages during testing
         # (unless you really ask to be flooded)

tests/modeltests/transactions/tests.py

@@ -160 +160 @@
             using_manually_managed_mistake
         )
 
+    def test_mirror_features(self):
+        from django.conf import settings
+        from django.db import connections
+        from django.db.backends.creation import BaseDatabaseCreation
+
+        settings.DATABASES['other']['TEST_MIRROR'] = 'default'
+
+        class DummyDatabaseCreation(BaseDatabaseCreation):
+            def _create_test_db(self, *args, **kwargs):
+                pass
+
+        creator = DummyDatabaseCreation(connections['default'])
+        creator.create_test_db()
+
+        self.assertTrue(connections['default'].features.supports_transactions)
+        self.assertTrue(connections['other'].features.supports_transactions)
+
+        del settings.DATABASES['other']['TEST_MIRROR']
 
 class TransactionRollbackTests(TransactionTestCase):
     def execute_bad_sql(self):