And only on this method the test fail on should:

testCellOnState
����� | cell |
����� cell := BlankCell new.
����� cell should: [ cell isOff ].
����� cell shouldnt:� [ cell isOn ].
Yes it does, inasmuch on the bottom of this page ( http://squeak.preeminent.org/tut2007/html/017.html )
both methods return false. I think later the implementation of this two methods will be changed so don't worry.