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

tests/html/element_types_test.dart

 // 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;
 import 'package:unittest/unittest.dart';
 import 'package:unittest/html_individual_config.dart';
 import 'dart:html';
 
 main() {
@@ skipping 63 matching lines @@
     test('supported', () {
       expect(TemplateElement.supported, true);
     });
   });
 
   group('supported_track', () {
     test('supported', () {
       expect(TrackElement.supported, true);
     });
   });
-
-  check(String name, bool fn(), [bool supported = true]) {
-    test(name, () {
-      var expectation = supported ? returnsNormally : throws;
-      expect(() {
-        expect(fn(), isTrue);
-      }, expectation);
-    });
-
-  }
-
-  group('constructors', () {
-    check('a', () => new AnchorElement() is AnchorElement);
-    check('area', () => new AreaElement() is AreaElement);
-    check('audio', () => new AudioElement() is AudioElement);
-    check('body', () => new BodyElement() is BodyElement);
-    check('br', () => new BRElement() is BRElement);
-    check('base', () => new BaseElement() is BaseElement);
-    check('button', () => new ButtonElement() is ButtonElement);
-    check('canvas', () => new CanvasElement() is CanvasElement);
-    check('caption', () => new TableCaptionElement() is TableCaptionElement);
-    check('content', () => new ContentElement() is ContentElement,
-        ContentElement.supported);
-    check('details', () => new DetailsElement() is DetailsElement,
-        DetailsElement.supported);
-    check('datalist', () => new DataListElement() is DataListElement,
-        DataListElement.supported);
-    check('dl', () => new DListElement() is DListElement);
-    check('div', () => new DivElement() is DivElement);
-    check('embed', () => new EmbedElement() is EmbedElement,
-        EmbedElement.supported);
-    check('fieldset', () => new FieldSetElement() is FieldSetElement);
-    check('form', () => new FormElement() is FormElement);
-    check('head', () => new HeadElement() is HeadElement);
-    check('hr', () => new HRElement() is HRElement);
-    check('html', () => new HtmlHtmlElement() is HtmlHtmlElement);
-    check('h1', () => new HeadingElement.h1() is HeadingElement);
-    check('h2', () => new HeadingElement.h2() is HeadingElement);
-    check('h3', () => new HeadingElement.h3() is HeadingElement);
-    check('h4', () => new HeadingElement.h4() is HeadingElement);
-    check('h5', () => new HeadingElement.h5() is HeadingElement);
-    check('h6', () => new HeadingElement.h6() is HeadingElement);
-    check('iframe', () => new IFrameElement() is IFrameElement);
-    check('img', () => new ImageElement() is ImageElement);
-    check('input', () => new InputElement() is InputElement);
-    check('keygen', () => new KeygenElement() is KeygenElement,
-        KeygenElement.supported);
-    check('li', () => new LIElement() is LIElement);
-    check('label', () => new LabelElement() is LabelElement);
-    check('legen', () => new LegendElement() is LegendElement);
-    check('link', () => new LinkElement() is LinkElement);
-    check('map', () => new MapElement() is MapElement);
-    check('menu', () => new MenuElement() is MenuElement);
-    check('meta', () => new MetaElement() is MetaElement);
-    check('meter', () => new MeterElement() is MeterElement,
-        MeterElement.supported);
-    check('del', () => new Element.tag('del') is ModElement);
-    check('ins', () => new Element.tag('ins') is ModElement);
-    check('object', () => new ObjectElement() is ObjectElement,
-        ObjectElement.supported);
-    check('ol', () => new OListElement() is OListElement);
-    check('optgroup', () => new OptGroupElement() is OptGroupElement);
-    check('option', () => new OptionElement() is OptionElement);
-    check('output', () => new OutputElement() is OutputElement,
-        OutputElement.supported);
-    check('p', () => new ParagraphElement() is ParagraphElement);
-    check('param', () => new ParamElement() is ParamElement);
-    check('pre', () => new PreElement() is PreElement);
-    check('progress', () => new ProgressElement() is ProgressElement,
-        ProgressElement.supported);
-    check('q', () => new QuoteElement() is QuoteElement);
-    check('script', () => new ScriptElement() is ScriptElement);
-    check('select', () => new SelectElement() is SelectElement);
-    check('shadow', () => new ShadowElement() is ShadowElement,
-        ShadowElement.supported);
-    check('source', () => new SourceElement() is SourceElement);
-    check('span', () => new SpanElement() is SpanElement);
-    check('style', () => new StyleElement() is StyleElement);
-    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);
-    group('ul', () {
-      check('ul', () => new UListElement() is UListElement);
-
-      test('accepts li', () {
-        var ul = new UListElement();
-        var li = new LIElement();
-        ul.append(li);
-      });
-    });
-    check('video', () => new VideoElement() is VideoElement);
-    check('unknown', () => new Element.tag('someunknown') is UnknownElement);
-  });
 }