def METHOD_NAME(self, tmp_path):
    old_cset = self.simple_cset.insert_offset(str(tmp_path))
    # have to add it; scan adds the root node
    old_cset.add(fsDir(str(tmp_path)))
    (tmp_path / "usr").mkdir()
    (tmp_path / "usr" / "dar").touch()
    (tmp_path / "foon").touch()
    # note that this *is* a sym in the cset; adding this specific
    # check so that if the code differs, the test breaks, and the tests
    # get updated (additionally, folks may not be aware of the potential)
    (tmp_path / "broken-symlink").touch()
    engine = fake_engine(csets={"test": old_cset})
    existent = livefs.scan(str(tmp_path))
    generated = self.run_cset("_get_livefs_intersect_cset", engine, "test")
    assert generated == existent