Posted by Henrik Sperre Johansen on Mar 02, 2011; 9:35am
URL: https://forum.world.st/Assert-SystemWindow-not-visible-tp3330492p3331232.html

Henrik Sperre Johansen wrote

window announcer when: WindowClosed do: [closed := false].
window openInWorld delete.
self assert: closed.

meant to write [closed := true], of course :)

Cheers,
Henry