update elements and fix some bugs

test/paper_checked_element_behavior_test.dart

+// Copyright (c) 2015, 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.
+@TestOn('browser')
+library polymer_elements.test.paper_checked_element_behavior_test;
+
+import 'dart:async';
+import 'package:polymer_elements/iron_a11y_keys_behavior.dart';
+import 'package:polymer_elements/iron_checked_element_behavior.dart';
+import 'package:polymer_elements/iron_button_state.dart';
+import 'package:polymer_elements/iron_control_state.dart';
+import 'package:polymer_elements/iron_form_element_behavior.dart';
+import 'package:polymer_elements/iron_validatable_behavior.dart';
+import 'package:polymer_elements/paper_checked_element_behavior.dart';
+import 'package:polymer_elements/paper_inky_focus_behavior.dart';
+import 'package:polymer_elements/paper_ripple_behavior.dart';
+import 'package:polymer/polymer.dart';
+import 'package:web_components/web_components.dart';
+import 'package:test/test.dart';
+import 'common.dart';
+
+main() async {
+  await initPolymer();
+
+  group('PaperCheckedElementBehavior', () {
+    TestChecked checked;
+
+    setUp(() {
+      checked = fixture('basic');
+    });
+
+    test('element checked when tapped to check', () {
+      tap(checked);
+      expect(checked.checked, isTrue);
+    });
+
+    test('element checked when active', () {
+      checked.active = true;
+      expect(checked.checked, isTrue);
+    });
+
+    test('element not checked when disabled and made active', () {
+      checked.disabled = true;
+      checked.active = true;
+      expect(checked.checked, isFalse);
+    });
+
+    test('element not checked when disabled and tapped', () {
+      checked.disabled = true;
+      tap(checked);
+      expect(checked.checked, isFalse);
+    });
+
+    test('element ripple has checked attribute when element tapped to check',
+        () {
+      tap(checked);
+      expect(checked.hasRipple(), isTrue);
+      expect(checked.getRipple().getAttribute('checked'), isNotNull);
+    });
+
+    test(
+        'element ripple does not have checked attribute when element tapped to '
+        'uncheck', () {
+      tap(checked);
+      tap(checked);
+      expect(checked.getRipple().getAttribute('checked'), isNull);
+    });
+  });
+}
+
+@PolymerRegister('test-checked')
+class TestChecked extends PolymerElement
+    with
+        IronA11yKeysBehavior,
+        IronButtonState,
+        IronControlState,
+        PaperRippleBehavior,
+        PaperInkyFocusBehavior,
+        IronFormElementBehavior,
+        IronValidatableBehavior,
+        IronCheckedElementBehavior,
+        PaperCheckedElementBehavior {
+  TestChecked.created() : super.created();
+}