[whatwg] Canvas tests updated

[Philip Taylor]

I've recently updated my canvas tests at

  http://philip.html5.org/tests/canvas/suite/tests/

so they ought to be up-to-date with the latest version of the spec,
and have greater coverage than before. (Text rendering is the only
thing that's intentionally untested, though I may have missed some
other smaller areas.)

http://philip.html5.org/tests/canvas/suite/tests/results.html shows
the results I got from testing various browsers. Using the totally
unfair unrepresentative biased method of counting the number of
passes, the latest versions of Opera and WebKit and Konqueror are
roughly tied in first place while Firefox is last (except for IE which
doesn't really count), but even the best fail about a quarter of the
tests, so there's plenty of scope for bug-fixing :-)

Anyway, it's quite likely that a number of the tests are incorrect,
since nobody (including me) has reviewed them carefully; or that the
tests are correct according to the spec but the spec is incorrect
according to reality; so it would be good to get feedback from anyone
who notices issues in them.

-- 
Philip Taylor
excors at gmail.com