Tobias Pape uploaded a new version of CollectionsTests to project The Trunk:
http://source.squeak.org/trunk/CollectionsTests-topa.215.mcz

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

Name: CollectionsTests-topa.215
Author: topa
Time: 25 March 2014, 2:27:43.108 pm
UUID: cb44512a-51f4-4cef-8d33-336b520e113f
Ancestors: CollectionsTests-dtl.214

When a stream is created on a collection, it tries to keep
using that collection instead of copying, even in the case
of mutation of the original collection.

=============== Diff against CollectionsTests-dtl.214 ===============

Item was added:
+ ----- Method: WriteStreamTest>>testStreamAlwasyUseGivenCollection (in category 'tests - instance creation') -----
+ testStreamAlwasyUseGivenCollection
+ 	"self debug: #testStreamUseGivenCollection"
+ 	
+ 	"When a stream is created on a collection, it tries to keep using that collection instead of copying,
+ 	even in the case of mutation of the original collection."
+ 	
+ 	|string stream|
+ 	
+ 	string := String withAll: 'xy'.
+ 	stream := WriteStream on: string.
+ 	
+ 	stream nextPut: $a.
+ 	stream nextPut: (Character codePoint: 269). "wide."
+ 	self assert: string = (String with: $a with: (Character codePoint: 269)).!