'From Pharo1.4a of ''16 June 2011'' [Latest update: #14090] on 25 November 2011 at 4:09:53 pm'! !FLPluggableSubstitutionTest methodsFor: 'tests' stamp: 'YanniChiu 11/25/2011 16:05'! testTransientPairChange | result | self analyzer when: [:x | FLPair = x class and: [x left isNil not] ] substituteBy: [:x | x copy left: $A ]. result := self resultOfSerializeAndMaterialize: (FLPair new left: $a; right: $b; yourself). self assert: result left = $A.! !