Apropos of our conversation yesterday... seems like we should have a few tests around Save All & Close All as well:

* Save All with several untitled documents
* Save All where you click Cancel to one of the Save dialogs (what happens with remaining unsaved docs?)
* Close All & Save, with one or more untitled documents
* Close All & Save, where you click Cancel to one of the Save dialogs (is the overall Close All promise failed? are the docs before this one closed and the ones after it left open? or should _all_ docs be atomically left open?)