Refactor custom element tests

tests/html/custom_tags_test.dart

Index: tests/html/custom_tags_test.dart
diff --git a/tests/html/custom_tags_test.dart b/tests/html/custom_tags_test.dart
new file mode 100644
index 0000000000000000000000000000000000000000..7ac344c06dfcb3c3f976b0e579414951071c26bc
--- /dev/null
+++ b/tests/html/custom_tags_test.dart
@@ -0,0 +1,46 @@
+// Copyright (c) 2013, 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 custom_tags_test;
+import '../../pkg/unittest/lib/unittest.dart';
+import '../../pkg/unittest/lib/html_config.dart';
+import 'dart:html';
+
+main() {
+  useHtmlConfiguration();
+
+  test('create via custom tag', () {
+    var element = new Element.tag('x-basic1')..id = 'basic1';
+    document.body.nodes.add(element);
+
+    var queryById = query('#basic1');
+    expect(queryById, equals(element));
+
+    var queryByTag = queryAll('x-basic1');
+    expect(queryByTag.length, equals(1));
+    expect(queryByTag[0], equals(element));
+  });
+
+  test('custom inner html', () {
+    var element = new DivElement();
+    element.innerHtml = "<x-basic2 id='basic2'></x-basic2>";
+    document.body.nodes.add(element);
+
+    var queryById = query('#basic2');
+    expect(queryById is Element, isTrue);
+
+    var queryByTag = queryAll('x-basic2');
+    expect(queryByTag.length, equals(1));
+    expect(queryByTag[0], equals(queryById));
+  });
+
+  test('type extension inner html', () {
+    var element = new DivElement();
+    element.innerHtml = "<div is='x-basic3' id='basic3'></div>";
+    document.body.nodes.add(element);
+
+    var queryById = query('#basic3');
+    expect(queryById is DivElement, isTrue);
+  });
+}