// Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.

// @dart = 2.9

/// @assertion final Document ownerDocument
/// The document this node belongs to.
/// @description Checks ownerDocument of nested elements.

import "dart:html";
import "../../../Utils/expect.dart";

main() {
  var x = document.body;
  x.innerHtml = '<div><button>foo</button></div>';

  Expect.equals(document, x.ownerDocument, 'nest1');

  Expect.equals(document, x.firstChild.ownerDocument, 'nest2');

  Expect.equals(document, x.firstChild.firstChild.ownerDocument, 'nest3');
}