def entry1 = new ChildMap.Entry<FileSystemNode>(path1, child1)
        def entry2 = new ChildMap.Entry<FileSystemNode>(path2, child2)
        return compared < 0 ? ChildMapFactory.childMapFromSorted([entry1, entry2]) : ChildMapFactory.childMapFromSorted([entry2, entry1])
    }

    @Override
    FileSystemNode mockChild() {
        Mock(FileSystemNode)
    }