Refactor custom element tests

tests/html/custom_elements_test.dart

 // 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 blob_test;
+library custom_elements_test;
 import '../../pkg/unittest/lib/unittest.dart';
-import '../../pkg/unittest/lib/html_config.dart';
+import '../../pkg/unittest/lib/html_individual_config.dart';
 import 'dart:html';
 
 class CustomType extends Element {
   bool onCreatedCalled = false;
   void onCreated() {
     onCreatedCalled = true;
   }
 }
 
 class NotAnElement {}
 
 main() {
-  useHtmlConfiguration();
+  useHtmlIndividualConfiguration();
 
-  test('register', () {
-    document.register('x-type1', CustomType);
+  group('register', () {
+    test('register', () {
+      document.register('x-type1', CustomType);
 
-    var element = new Element.tag('x-type1');
-    expect(element, isNotNull);
-    expect(element is CustomType, isTrue);
-    expect(element.onCreatedCalled, isTrue);
+      var element = new Element.tag('x-type1');
+      expect(element, isNotNull);
+      expect(element is CustomType, isTrue);
+      expect(element.onCreatedCalled, isTrue);
+    });
+
+    test('register twice', () {
+      document.register('x-type2', CustomType);
+      expect(() {
+        document.register('x-type2', CustomType);
+      }, throws, reason: 'Cannot register a tag more than once.');
+
+      document.register('x-type3', CustomType);
+
+      var element = new Element.tag('x-type3');
+      expect(element, isNotNull);
+      expect(element is CustomType, isTrue);
+    });
+
+    test('register null', () {
+      expect(() {
+        document.register('x-type4', null);
+      }, throws, reason: 'Cannot register a null type.');
+    });
+
+    test('register native', () {
+      expect(() {
+        document.register('x-type5', BodyElement);
+      }, throws, reason: 'Cannot register a native element.');
+    });
+
+    test('register non-element', () {
+      expect(() {
+        document.register('x-type6', NotAnElement);
+      }, throws, reason: 'Cannot register a non-element.');
+    });
   });
 
-  test('register twice', () {
-    document.register('x-type2', CustomType);
-    expect(() {
-      document.register('x-type2', CustomType);
-    }, throws, reason: 'Cannot register a tag more than once.');
+  group('preregister', () {
+    // TODO(vsm): Modify this test once we agree on the proper semantics.
+    test('pre-registration construction', () {
+      var dom = new Element.html('<div><x-type7></x-type7></div>');
+      var preElement = dom.children[0];
+      expect(preElement, isNotNull);
+      expect(preElement is UnknownElement, isTrue);
+      var firedOnPre = false;
+      preElement.onFocus.listen((_) {
+        firedOnPre = true;
+      });
 
-    document.register('x-type3', CustomType);
+      document.register('x-type7', CustomType);
 
-    var element = new Element.tag('x-type3');
-    expect(element, isNotNull);
-    expect(element is CustomType, isTrue);
-  });
+      var postElement = dom.children[0];
+      expect(postElement, isNotNull);
+      expect(postElement is CustomType, isTrue);
+      expect(postElement.onCreatedCalled, isTrue);
 
-  test('register null', () {
-    expect(() {
-      document.register('x-type4', null);
-    }, throws, reason: 'Cannot register a null type.');
-  });
+      // Element from first query remains an UnknownElement.
+      expect(preElement is UnknownElement, isTrue);
+      expect(preElement.parent, isNull);
+      expect(dom.children.length, 1);
 
-  test('register native', () {
-    expect(() {
-      document.register('x-type5', BodyElement);
-    }, throws, reason: 'Cannot register a native element.');
-  });
-
-  test('register non-element', () {
-    expect(() {
-      document.register('x-type6', NotAnElement);
-    }, throws, reason: 'Cannot register a non-element.');
-  });
-
-  test('pre-registration construction', () {
-    var dom = new Element.html('<div><x-type7></x-type7></div>');
-    var preElement = dom.children[0];
-    expect(preElement, isNotNull);
-    expect(preElement is UnknownElement, isTrue);
-    var firedOnPre = false;
-    preElement.onFocus.listen((_) {
-      firedOnPre = true;
+      var firedOnPost = false;
+      postElement.onFocus.listen((_) {
+        firedOnPost = true;
+      });
+      // Event handlers should not persist to new element.
+      postElement.dispatchEvent(new Event('focus'));
+      expect(firedOnPre, isFalse);
+      expect(firedOnPost, isTrue);
     });
-
-    document.register('x-type7', CustomType);
-
-    var postElement = dom.children[0];
-    expect(postElement, isNotNull);
-    expect(postElement is CustomType, isTrue);
-    expect(postElement.onCreatedCalled, isTrue);
-
-    // Element from first query remains an UnknownElement.
-    expect(preElement is UnknownElement, isTrue);
-    expect(preElement.parent, isNull);
-    expect(dom.children.length, 1);
-
-    var firedOnPost = false;
-    postElement.onFocus.listen((_) {
-      firedOnPost = true;
-    });
-    // Event handlers should not persist to new element.
-    postElement.dispatchEvent(new Event('focus'));
-    expect(firedOnPre, isFalse);
-    expect(firedOnPost, isTrue);
   });
 }