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

tests/html/element_types_constructors4_test.dart

Index: tests/html/element_types_constructors4_test.dart
diff --git a/tests/html/element_types_constructors4_test.dart b/tests/html/element_types_constructors4_test.dart
new file mode 100644
index 0000000000000000000000000000000000000000..c4dfb90b99fc98b1031f98ec2ac3fa983a2ff8af
--- /dev/null
+++ b/tests/html/element_types_constructors4_test.dart
@@ -0,0 +1,36 @@
+// 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_constructors_test4;
+
+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('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);
+}