LayoutTests/fast/forms/select-set-length-with-mutation-remove_t01.dart

/*
 * 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.
 */
/**
 * @description Tests that setting .length on an HTMLSelectElement works in the
 * presence of mutation listeners that remove option elements.
 */
import "dart:html";
import "../../testcommon.dart";
import "../../../Utils/async_utils.dart";

main() {
  var sel;

  onRemove(e) {
    if (e.target.nextNode != null) {
      // remove listener temporarily to avoid lots of nesting
      sel.removeEventListener('DOMNodeRemoved', onRemove, false);
      e.target.nextNode.remove();
      sel.addEventListener('DOMNodeRemoved', onRemove, false);
    }
  }

  sel = document.createElement('select');
  document.body.append(sel);

  sel.addEventListener('DOMNodeRemoved', onRemove, false);
  sel.addEventListener('DOMNodeInserted', (_) {}, false);

  sel.length = 200;
  shouldBe(sel.length, 200);

  sel.length = 100;
  shouldBe(sel.length, 100);

  sel.length = 180;
  shouldBe(sel.length, 180);
}