- moved class-level attributes placed by the attributes package into a _class_state

variable attached to the class.
- mappers track themselves primarily using the "mappers" collection on _class_state.
ClassKey is gone and mapper lookup uses regular dict keyed to entity_name; removes
a fair degree of WeakKeyDictionary overhead as well as ClassKey overhead.
- mapper_registry renamed to _mapper_registry; is only consulted by the
compile_mappers(), mapper.compile() and clear_mappers() functions/methods.

1 files changed, 1 insertions, 0 deletions

diff --git a/test/orm/entity.py b/test/orm/entity.py
index 5ef01b882..ce267189f 100644
--- a/test/orm/entity.py
+++ b/test/orm/entity.py
@@ -43,6 +43,7 @@ class EntityTest(AssertMixin):
     def tearDownAll(self):
         metadata.drop_all()
     def tearDown(self):
+        ctx.current.clear()
         clear_mappers()
         for t in metadata.table_iterator(reverse=True):
             t.delete().execute()