| // 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. |
| |
| // @dart = 2.9 |
| |
| 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 = querySelector('#testcanvas'); |
| expect(e, isNotNull); |
| expect(e.id, 'testcanvas'); |
| expect(e, isCanvasElement); |
| expect(e, canvas); |
| }); |
| |
| test('query (None)', () { |
| Element e = querySelector('#nothere'); |
| expect(e, isNull); |
| }); |
| |
| test('queryAll (One)', () { |
| List l = querySelectorAll('canvas'); |
| expect(l.length, 1); |
| expect(l[0], canvas); |
| }); |
| |
| test('queryAll (Multiple)', () { |
| List l = querySelectorAll('img'); |
| expect(l.length, 2); |
| expect(l[0], isImageElement); |
| expect(l[1], isImageElement); |
| expect(l[0] == l[1], isFalse); |
| }); |
| |
| test('queryAll (None)', () { |
| List l = querySelectorAll('video'); |
| expect(l.isEmpty, isTrue); |
| }); |
| } |