We test the hard cases like WTF containers and Strings in chromium specific code at the moment. But the better place for such tests is Tools/TestWebKitAPI.
Created attachment 168214 [details] for try bots
Comment on attachment 168214 [details] for try bots Attachment 168214 [details] did not pass mac-ews (mac): Output: http://queues.webkit.org/results/14254567
Committed r131149: <http://trac.webkit.org/changeset/131149>