Enable (HTML)DataListElement

tests/html/datalistelement_test.dart

Index: tests/html/datalistelement_test.dart
diff --git a/tests/html/datalistelement_test.dart b/tests/html/datalistelement_test.dart
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+++ b/tests/html/datalistelement_test.dart
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+// Copyright (c) 2012, 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.
+
+#library('datalistelement_dataview_test');
+#import('../../pkg/unittest/unittest.dart');
+#import('../../pkg/unittest/html_config.dart');
+#import('dart:html');
+
+main() {
+  useHtmlConfiguration();
+
+  var div;
+
+  setUp(() {
+      div = new DivElement();
+      document.body.nodes.add(div);
+      div.innerHTML = """
+<input id="input" list="browsers" />
+<datalist id="browsers">
+  <option value="Chrome">
+  <option value="Firefox">
+  <option value="Internet Explorer">
+  <option value="Opera">
+  <option value="Safari">
+</datalist>
+""";
+    });
+
+  tearDown(() {
+      document.body.nodes.removeLast();
+    });
+
+
+  test('is', () {
+      var list = document.query('#browsers');
+      expect(list is DataListElement);
+  });
+
+  test('list', () {
+      var list = document.query('#browsers');
+      var input = document.query('#input');
+      expect(input.list, list);
+  });
+
+  test('options', () {
+      var options = document.query('#browsers')
+          .queryAll('option');  // Uses DataListElement.
+      expect(options.length, 5);
+  });
+
+  test('create', () {
+      var list = new DataListElement();
+      expect(list is DataListElement);
+    });
+}