LibTest/html/Event/matchingTarget_A01_t02.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.

/**
 * @assertion Element get matchingTarget
 * A pointer to the element whose CSS selector matched within which an event
 * was fired.
 * If this Event was not associated with any Event delegation, accessing this
 * value will throw an UnsupportedError.
 * @description Checks that UnsupportedError is thrown if there is no event
 * delegation.
 */
import "dart:html";
import "../../../Utils/expect.dart";

main() {
  var body = document.body;
  if (body != null) {
    var id1 = new DivElement()
      ..id = 'id';
    body.append(id1);

    body.onClick.listen((e) {
      Expect.throws(() {
        e.matchingTarget;
      }, (e) => e is UnsupportedError);
      asyncEnd();
    });

    asyncStart();
    id1.click();
  } else {
    Expect.fail("Body is null");
  }
}