try {
      Files.createParentDirs(file);
      assertTrue(parent.exists());
    } finally {
      assertTrue(parent.delete());
    }
  }

  public void testCreateParentDirs_multipleParentsNeeded() throws IOException {
    File file = file(getTempDir(), "grandparent", "parent", "nonexistent.file");
    File parent = file.getParentFile();
    File grandparent = parent.getParentFile();