From be64dd35fbb9b2b49fa5774b7e7f777df8351c1a Mon Sep 17 00:00:00 2001 From: Aymeric Augustin Date: Sat, 24 Nov 2012 09:48:21 +0100 Subject: [PATCH] Fixed #19343 -- Deadlock with TransactionTestCase + TEST_MIRROR + multi_db. Thanks Jeremy Dunck for the review. --- django/test/testcases.py | 37 ++++++++++++++----------------------- 1 file changed, 14 insertions(+), 23 deletions(-) diff --git a/django/test/testcases.py b/django/test/testcases.py index 0f76e11c1a6..3bb40a58381 100644 --- a/django/test/testcases.py +++ b/django/test/testcases.py @@ -416,6 +416,15 @@ class TransactionTestCase(SimpleTestCase): self._urlconf_setup() mail.outbox = [] + def _databases_names(self, include_mirrors=True): + # If the test case has a multi_db=True flag, act on all databases, + # including mirrors or not. Otherwise, just on the default DB. + if getattr(self, 'multi_db', False): + return [alias for alias in connections + if include_mirrors or not connections[alias].settings_dict['TEST_MIRROR']] + else: + return [DEFAULT_DB_ALIAS] + def _reset_sequences(self, db_name): conn = connections[db_name] if conn.features.supports_sequence_reset: @@ -433,10 +442,7 @@ class TransactionTestCase(SimpleTestCase): transaction.commit_unless_managed(using=db_name) def _fixture_setup(self): - # If the test case has a multi_db=True flag, act on all databases. - # Otherwise, just on the default DB. - db_names = connections if getattr(self, 'multi_db', False) else [DEFAULT_DB_ALIAS] - for db_name in db_names: + for db_name in self._databases_names(include_mirrors=False): # Reset sequences if self.reset_sequences: self._reset_sequences(db_name) @@ -502,16 +508,12 @@ class TransactionTestCase(SimpleTestCase): conn.close() def _fixture_teardown(self): - # If the test case has a multi_db=True flag, flush all databases. - # Otherwise, just flush default. - databases = connections if getattr(self, 'multi_db', False) else [DEFAULT_DB_ALIAS] - # Roll back any pending transactions in order to avoid a deadlock # during flush when TEST_MIRROR is used (#18984). for conn in connections.all(): conn.rollback_unless_managed() - for db in databases: + for db in self._databases_names(include_mirrors=False): call_command('flush', verbosity=0, interactive=False, database=db, skip_validation=True, reset_sequences=False) @@ -796,11 +798,7 @@ class TestCase(TransactionTestCase): assert not self.reset_sequences, 'reset_sequences cannot be used on TestCase instances' - # If the test case has a multi_db=True flag, setup all databases. - # Otherwise, just use default. - db_names = connections if getattr(self, 'multi_db', False) else [DEFAULT_DB_ALIAS] - - for db_name in db_names: + for db_name in self._databases_names(): transaction.enter_transaction_management(using=db_name) transaction.managed(True, using=db_name) disable_transaction_methods() @@ -808,7 +806,7 @@ class TestCase(TransactionTestCase): from django.contrib.sites.models import Site Site.objects.clear_cache() - for db in db_names: + for db in self._databases_names(include_mirrors=False): if hasattr(self, 'fixtures'): call_command('loaddata', *self.fixtures, **{ @@ -822,15 +820,8 @@ class TestCase(TransactionTestCase): if not connections_support_transactions(): return super(TestCase, self)._fixture_teardown() - # If the test case has a multi_db=True flag, teardown all databases. - # Otherwise, just teardown default. - if getattr(self, 'multi_db', False): - databases = connections - else: - databases = [DEFAULT_DB_ALIAS] - restore_transaction_methods() - for db in databases: + for db in self._databases_names(): transaction.rollback(using=db) transaction.leave_transaction_management(using=db)