abstract protected NODE createInitialRootNode(ChildMap<CHILD> children);

    abstract protected CHILD mockChild()

    void setupTest(VirtualFileSystemTestSpec spec) {
        this.children = createChildren(spec.childPaths)
        this.initialRoot = createInitialRootNode(children)
        this.searchedPath = spec.searchedPath
        this.selectedChildPath = spec.selectedChildPath
        if (selectedChildPath != null) {

        }

        where:
        vfsSpec << CHILD_IS_PREFIX.findAll { it.childPaths.size() == 1 }
    }

    def "returns empty for snapshot"() {
        def node = new UnknownFileSystemNode(createChildren(["myFile.txt"]))

        expect:
        !node.getSnapshot().present
    }