- Added a new feature which allows automated naming conventions to be

applied to :class:`.Constraint` and :class:`.Index` objects.  Based
on a recipe in the wiki, the new feature uses schema-events to set up
names as various schema objects are associated with each other.  The
events then expose a configuration system through a new argument
:paramref:`.MetaData.naming_convention`.  This system allows production
of both simple and custom naming schemes for constraints and indexes
on a per-:class:`.MetaData` basis.  [ticket:2923]

commit 7e65e52c086652de3dd3303c723f98f09af54db8
Author: Mike Bayer <mike_mp@zzzcomputing.com>
Date:   Sat Feb 1 15:09:04 2014 -0500

    - first pass at new naming approach

1 files changed, 18 insertions, 0 deletions

diff --git a/lib/sqlalchemy/testing/fixtures.py b/lib/sqlalchemy/testing/fixtures.py
index 28541b14b..8717ce764 100644
--- a/lib/sqlalchemy/testing/fixtures.py
+++ b/lib/sqlalchemy/testing/fixtures.py
@@ -210,6 +210,24 @@ class TablesTest(TestBase):
                 [dict(zip(headers[table], column_values))
                  for column_values in rows[table]])
 
+from sqlalchemy import event
+class RemovesEvents(object):
+    @util.memoized_property
+    def _event_fns(self):
+        return set()
+
+    def event_listen(self, target, name, fn):
+        self._event_fns.add((target, name, fn))
+        event.listen(target, name, fn)
+
+    def teardown(self):
+        for key in self._event_fns:
+            event.remove(*key)
+        super_ = super(RemovesEvents, self)
+        if hasattr(super_, "teardown"):
+            super_.teardown()
+
+
 
 class _ORMTest(object):