Hi I would like to write a test to see if children includes files | ref children alpha | filesystem createDirectory: '/alpha'. filesystem createDirectory: '/alpha/beta'. filesystem createDirectory: '/alpha/gamma/'. Now how do I create a file? There is createDirectory but not createFile. I think that there is a lot of work before FS can get into the image..... Stef testChildrenWithFilesAndDirectories "Children of a reference are all the files and directories contained in this reference" "self debug: #testChildrenWithFilesAndDirectories" | ref children alpha | filesystem createDirectory: '/alpha'. filesystem createDirectory: '/alpha/beta'. filesystem createDirectory: '/alpha/gamma/'. filesystem working / '/alpha/gamma/'. alpha := filesystem referenceTo: '/alpha'. alpha / 'zork.text'. self halt. ref := filesystem referenceTo: '/alpha'. children := ref children. self assert: children size = 2. children do: [:child | self assert: child class = FSReference. self assert: (child isChildOf: ref). self assert: (#('beta' 'gamma') includes: child basename)]