Eliot Miranda uploaded a new version of KernelTests to project The Trunk:
http://source.squeak.org/trunk/KernelTests-eem.217.mcz

==================== Summary ====================

Name: KernelTests-eem.217
Author: eem
Time: 28 March 2012, 6:33:27.001 pm
UUID: dc631b68-a4ab-4964-b691-f4092a64aab2
Ancestors: KernelTests-cmm.216

A test for BlockClosure>#once

=============== Diff against KernelTests-cmm.216 ===============

Item was added:
+ ----- Method: BlockClosureTest class>>onceMethod (in category 'support methods') -----
+ onceMethod
+ 	^[Object new] once!

Item was added:
+ ----- Method: BlockClosureTest>>testOnce (in category 'tests - evaluating') -----
+ testOnce
+ 	| objs result |
+ 	objs := (1 to: 10) collect: [:ign| [Object new] once].
+ 	self assert: (objs allSatisfy: [:obj| obj == objs first]).
+ 	result := self class onceMethod.
+ 	1 to: 10 do:
+ 		[:ign|
+ 		self assert: result == self class onceMethod]!