In a Phep005 soon available testLiteralSet | compiler | compiler := OpalCompiler new. compiler compilationContext parserClass: RBParserLiteralCollection. self assert: (compiler evaluate: '{ :Set 1 . 2 . 1}' ) equals: #(1 2) asSet. testOrderedCollection | compiler | compiler := OpalCompiler new. compiler compilationContext parserClass: RBParserLiteralCollection. self assert: (compiler evaluate: '{ :OrderedCollection 1 . 2 . 1 . 3}' ) equals: #(1 2 1 3) asOrderedCollection. testDictionary | compiler dict | compiler := OpalCompiler new. compiler compilationContext parserClass: RBParserLiteralCollection. dict := (compiler evaluate: '{ :Dictionary #a -> 33 . #b -> 44}' ). self assert: (dict at: #a) equals: 33