
PASS Object.getOwnPropertyNames on HTMLCollection 
PASS Object.getOwnPropertyNames on HTMLCollection with non-HTML namespace 
PASS Object.getOwnPropertyNames on HTMLCollection with expando object 
FAIL Trying to set an expando that would shadow an already-existing named property assert_equals: expected (object) Element node <span id="some-id"></span> but got (number) 5
PASS Trying to set an expando that shadows a named property that gets added later 
PASS Trying to set a non-configurable expando that shadows a named property that gets added later