Split the constructors group in element_types_test into multiple files to narrow down timeouts

tests/html/element_types_constructors5_test.dart

Index: tests/html/element_types_constructors5_test.dart
diff --git a/tests/html/element_types_constructors5_test.dart b/tests/html/element_types_constructors5_test.dart
new file mode 100644
index 0000000000000000000000000000000000000000..fddf4b809eb0bc7e23284bff6b8ab38049cc435f
--- /dev/null
+++ b/tests/html/element_types_constructors5_test.dart
@@ -0,0 +1,37 @@
+// 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 element_types_constructors5_test;
+
+import 'package:unittest/unittest.dart';
+import 'package:unittest/html_individual_config.dart';
+import 'dart:html';
+
+main() {
+  useHtmlIndividualConfiguration();
+
+  check(String name, bool fn(), [bool supported = true]) {
+    test(name, () {
+      var expectation = supported ? returnsNormally : throws;
+      expect(() {
+        expect(fn(), isTrue);
+      }, expectation);
+    });
+  }
+
+  check('table', () => new TableElement() is TableElement);
+  check('template', () => new TemplateElement() is TemplateElement,
+      TemplateElement.supported);
+  check('textarea', () => new TextAreaElement() is TextAreaElement);
+  check('title', () => new TitleElement() is TitleElement);
+  check('td', () => new TableCellElement() is TableCellElement);
+  check('col', () => new TableColElement() is TableColElement);
+  check('colgroup', () => new Element.tag('colgroup') is TableColElement);
+  check('tr', () => new TableRowElement() is TableRowElement);
+  check('tbody', () => new Element.tag('tbody') is TableSectionElement);
+  check('tfoot', () => new Element.tag('tfoot') is TableSectionElement);
+  check('thead', () => new Element.tag('thead') is TableSectionElement);
+  check('track', () => new TrackElement() is TrackElement,
+      TrackElement.supported);
+}