A new version of SUnit was added to project The Inbox:
http://source.squeak.org/inbox/SUnit-ct.121.mcz

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

Name: SUnit-ct.121
Author: ct
Time: 7 December 2019, 3:31:28.823146 pm
UUID: 56da0773-e6ce-8d44-9496-57eea4253f3f
Ancestors: SUnit-mt.120

Specify default message category for test selectors. Depends on Kernel-mt.1284.

=============== Diff against SUnit-mt.120 ===============

Item was added:
+ ----- Method: TestCase class>>defaultCategoryForSelector: (in category 'organization') -----
+ defaultCategoryForSelector: aSelector
+ 
+ 	aSelector isTestSelector
+ 		ifTrue: [^ #testing].
+ 	^ super defaultCategoryForSelector: aSelector!