assertDirectorySnapshot(s2, dir1)
        assertDirectorySnapshot(s2, child)
        assertHasNoMetadata(s2, dir2)
        assertHasNoMetadata(s2, dir3)
        assertHasNoMetadata(s2, tooFew)
        assertHasNoMetadata(s2, tooMany)
        assertHasNoMetadata(s2, parent)
        flatten(s2) == [dir1.path, "1:child1"]

        def s3 = updateDir(single, child)
        assertDirectorySnapshot(s3, dir1)