- the value of a bindparam() can be a callable, in which

case it's evaluated at statement execution time to
get the value.
- expressions used in filter(), filter_by() and others,
when they make usage of a clause generated from a
relation using the identity of a child object
(e.g. filter(Parent.child==<somechild>)), evaluate
the actual primary key value of <somechild> at
execution time so that the autoflush step of the
Query can complete, thereby populating the PK value
of <somechild> in the case that <somechild> was
pending.
- cleanup of attributes.get_committed_value() to never return
the NO_VALUE value; evaluates to None

1 files changed, 20 insertions, 0 deletions

diff --git a/test/orm/attributes.py b/test/orm/attributes.py
index 27860517c..bfb4d0d77 100644
--- a/test/orm/attributes.py
+++ b/test/orm/attributes.py
@@ -597,6 +597,26 @@ class DeferredBackrefTest(TestBase):
         lazy_load = (p1, p2, p3) = [Post("post 1"), Post("post 2"), Post("post 3")]
 
 class HistoryTest(TestBase):
+    def test_get_committed_value(self):
+        class Foo(fixtures.Base):
+            pass
+
+        attributes.register_class(Foo)
+        attributes.register_attribute(Foo, 'someattr', uselist=False, useobject=False)
+
+        f = Foo()
+        self.assertEquals(Foo.someattr.impl.get_committed_value(f._state), None)
+
+        f.someattr = 3
+        self.assertEquals(Foo.someattr.impl.get_committed_value(f._state), None)
+
+        f = Foo()
+        f.someattr = 3
+        self.assertEquals(Foo.someattr.impl.get_committed_value(f._state), None)
+        
+        f._state.commit(['someattr'])
+        self.assertEquals(Foo.someattr.impl.get_committed_value(f._state), 3)
+
     def test_scalar(self):
         class Foo(fixtures.Base):
             pass