given:
        def parent = Mock(ClassLoader, useObjenesis: false)
        def spec = new FilteringClassLoader.Spec([ 'allow.ClassName' ], [ 'allowPackage' ], [ 'allowPackagePrefix' ], [ 'allowPackageResource' ], [ 'allowResource' ], [ 'disallow.ClassName' ], [ 'disallowPackage' ])
        def filteringClassLoader = new FilteringClassLoader(parent, spec)
        def visitor = Mock(ClassLoaderVisitor)

        when: