Organize provisioning to use testresources

This change introduces the use of the testresources package,
such that the provisioning system uses TestResourceManager
objects in order to create and drop databases, schemas,
and manage transactional testing.  A new series of objects
to support transparent transaction containers within
tests is added as well.

partially implement bp: long-lived-transactionalized-db-fixtures
Partial-Bug: #1339206

Change-Id: I16bfa3af0e1ad6a9231ea38dea7cd76092347f55

1 files changed, 3 insertions, 4 deletions

diff --git a/oslo_db/sqlalchemy/test_migrations.py b/oslo_db/sqlalchemy/test_migrations.py
index 7627d21..2f9372e 100644
--- a/oslo_db/sqlalchemy/test_migrations.py
+++ b/oslo_db/sqlalchemy/test_migrations.py
@@ -16,6 +16,7 @@
 
 import abc
 import collections
+import functools
 import logging
 import pprint
 
@@ -483,9 +484,6 @@ class ModelsMigrationsSync(object):
                 return meta_def != insp_def
             return insp_def != "'%s'::character varying" % meta_def.arg
 
-    def _cleanup(self):
-        self.provision.drop_all_objects()
-
     FKInfo = collections.namedtuple('fk_info', ['constrained_columns',
                                                 'referred_table',
                                                 'referred_columns'])
@@ -567,7 +565,8 @@ class ModelsMigrationsSync(object):
                           ' for running of this test: %s' % e)
 
         # drop all tables after a test run
-        self.addCleanup(self._cleanup)
+        self.addCleanup(functools.partial(self.db.backend.drop_all_objects,
+                                          self.get_engine()))
 
         # run migration scripts
         self.db_sync(self.get_engine())