Frank Shearar uploaded a new version of ToolsTests to project The Trunk:
http://source.squeak.org/trunk/ToolsTests-fbs.64.mcz

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

Name: ToolsTests-fbs.64
Author: fbs
Time: 21 May 2013, 11:19:01.204 pm
UUID: 065f6deb-0212-492a-b868-1a37ffe31eeb
Ancestors: ToolsTests-fbs.63

In a MessageTrace, selecting the zeroth item (i.e., selecting no item), and then calling #removeMessageFromBrowser will remove the first item in the list.

=============== Diff against ToolsTests-fbs.63 ===============

Item was added:
+ ----- Method: MessageTraceTest>>testRemoveMessageFromBrowser (in category 'as yet unclassified') -----
+ testRemoveMessageFromBrowser
+ 	| count sel |
+ 	browser messageListIndex: 1.
+ 	sel := browser selection.
+ 	
+ 	browser removeMessageFromBrowser.
+ 	self deny: (browser messageList includes: sel) description: 'Method not removed'.
+ 
+ 	"In a MessageTrace, having an unselected message and then removing it means 'remove the first message'."
+ 	browser messageListIndex: 0.
+ 	count := browser messageList size.
+ 	browser removeMessageFromBrowser.
+ 	self assert: count - 1 = browser messageList size description: 'Method not removed'.!