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Jochen Theodorou resolved GROOVY-4526. -------------------------------------- Fix Version/s: 1.8.0 Assignee: Jochen Theodorou Resolution: Fixed the issue got forgotten. The associated PR has been merged 10 years ago already > NullObject paradoxes > -------------------- > > Key: GROOVY-4526 > URL: https://issues.apache.org/jira/browse/GROOVY-4526 > Project: Groovy > Issue Type: Bug > Components: groovy-runtime > Affects Versions: 1.7.5, 1.8-beta-2 > Reporter: Nikita Y Volkov > Assignee: Jochen Theodorou > Priority: Major > Fix For: 1.8.0 > > > {code} > def theNull = NullObject.getNullObject() > assert theNull // first paradox > assert theNull instanceof NullObject > assert theNull.equals(null) > assert theNull != null // second paradox > assert null.getClass() == NullObject > assert !(null instanceof NullObject) // third paradox > {code} > I have bumped into this paradox after debugging the following script: > {code} > new File('inexestent-folder/').listFiles().with { files -> > assert files > assert files in NullObject > println "This shouldn't happen" > } > {code} -- This message was sent by Atlassian Jira (v8.20.10#820010)