| <!DOCTYPE html> |
| <html> |
| <head> |
| <title>If prototype has a non-configurable property named constructor, Document.registerElement() throws NotSupportedError</title> |
| <meta name="author" title="Sergey G. Grekhov" href="mailto:sgrekhov@unipro.ru"> |
| <meta name="assert" content="If PROTOTYPE has a non-configurable property named constructor, throw a NotSupportedError and stop"> |
| <link rel="help" href="http://www.w3.org/TR/custom-elements/#instantiating-custom-elements"> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <script src="../testcommon.js"></script> |
| <link rel="stylesheet" href="/resources/testharness.css"> |
| </head> |
| <body> |
| <div id="log"></div> |
| <script> |
| test(function() { |
| var doc = newHTMLDocument(); |
| var proto = Object.create(HTMLElement.prototype); |
| Object.defineProperty(proto, 'constructor', {configurable: false}); |
| assert_throws('NotSupportedError', function() { |
| doc.registerElement('x-a', {prototype: proto}); |
| }, 'Exception should be thrown in case of attempt to register element ' + |
| 'with a non-configurable property named constructor'); |
| }, 'Test Document.registerElement() throws NotSupportedError ' + |
| 'if prototype has a non-configurable property named constructor'); |
| |
| |
| test(function() { |
| var doc = newHTMLDocument(); |
| var proto = Object.create(HTMLElement.prototype); |
| Object.defineProperty(proto, 'constructor', {configurable: true}); |
| try { |
| doc.registerElement('x-b', {prototype: proto}); |
| } catch (e) { |
| assert_unreached('Exception should not be thrown in case of attempt to register ' + |
| 'element with a configurable property named constructor'); |
| } |
| }, 'Test Document.registerElement() accepts prototype with a configurable ' + |
| 'property named constructor without throwing errors'); |
| </script> |
| </body> |
| </html> |
