Tests for "User prompts" section of HTML5 spec

Attached is an attempt at writing some initial tests for the "User
prompts" section of the HTML5 spec.

  http://www.whatwg.org/specs/web-apps/current-work/#user-prompts

I wrote the tests during the test-writing tutorial that Hixie led
at the HTML5 face-to-face during the 2007 W3C TPAC. This section
of the spec is pretty straightforward so the tests are very
simple. But they're still missing at least one thing: They don't
test the "The user agent must then pause..." assertions, because I
have no idea at this point how to test that...

-- 
Michael(tm) Smith
http://people.w3.org/mike/
http://sideshowbarker.net/