// Copyright (c) 2011, 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.

import 'dart:html';

import 'package:expect/minitest.dart';

main() {
  final div = new DivElement();
  final canvas = new CanvasElement(width: 200, height: 200);
  canvas.id = 'testcanvas';
  final element =
      new Element.html("<div><br/><img/><input/><img/></div>");
  document.body.nodes.addAll([div, canvas,  element]);

  var isCanvasElement =
      predicate((x) => x is CanvasElement, 'is a CanvasElement');
  var isImageElement =
      predicate((x) => x is ImageElement, 'is an ImageElement');

  test('query', () {
      Element e = query('#testcanvas');
      expect(e, isNotNull);
      expect(e.id, 'testcanvas');
      expect(e, isCanvasElement);
      expect(e, canvas);
    });

  test('query (None)', () {
      Element e = query('#nothere');
      expect(e, isNull);
    });

  test('queryAll (One)', () {
      List l = queryAll('canvas');
      expect(l.length, 1);
      expect(l[0], canvas);
    });


  test('queryAll (Multiple)', () {
      List l = queryAll('img');
      expect(l.length, 2);
      expect(l[0], isImageElement);
      expect(l[1], isImageElement);
      expect(l[0] == l[1], isFalse);
    });

  test('queryAll (None)', () {
      List l = queryAll('video');
      expect(l.isEmpty, isTrue);
    });
}