1 files changed, 49 insertions, 0 deletions
diff --git a/testing/web-platform/tests/custom-elements/v0/instantiating/custom-element-constructor-is-attribute.html b/testing/web-platform/tests/custom-elements/v0/instantiating/custom-element-constructor-is-attribute.html
new file mode 100644
index 000000000..0e18bf651
--- /dev/null
+++ b/testing/web-platform/tests/custom-elements/v0/instantiating/custom-element-constructor-is-attribute.html
@@ -0,0 +1,49 @@
+<!DOCTYPE html>
+<html>
+<head>
+<title>Custom element constructor sets value of IS attribute to custom element type, if it is not equal to name</title>
+<meta name="author" title="Sergey G. Grekhov" href="mailto:sgrekhov@unipro.ru">
+<meta name="assert" content="If TYPE is not the same as NAME, set the value of ELEMENT's IS attribute to TYPE">
+<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>
+</head>
+<body>
+<div id="log"></div>
+<script>
+test(function() {
+    var doc = newHTMLDocument();
+    HTML5_ELEMENTS.forEach(function(tagName) {
+        if (HTML5_DOCUMENT_ELEMENTS.indexOf(tagName) !== -1) {
+            return;
+        }
+        var obj = doc.createElement(tagName);
+        var name = 'x-a-' + tagName;
+        var proto = Object.create(obj.constructor.prototype);
+        var GeneratedConstructor = doc.registerElement(name, {prototype: proto, extends: tagName});
+        var customElement = new GeneratedConstructor();
+
+        assert_equals(customElement.getAttribute('is'), name,
+            'Value of the IS attribute should be set to type');
+    });
+}, 'Test that the constructor of a type extension sets the IS attribute value to the type');
+
+
+test(function() {
+    var doc = newHTMLDocument();
+    HTML5_ELEMENTS.forEach(function(tagName) {
+        if (HTML5_DOCUMENT_ELEMENTS.indexOf(tagName) !== -1) {
+            return;
+        }
+        var name = 'x-b-' + tagName;
+        var GeneratedConstructor = doc.registerElement(name);
+        var customElement = new GeneratedConstructor();
+
+        assert_false(customElement.hasAttribute('is'),
+            'IS attribute should not present if local name is the same as type');
+    });
+}, 'Test that the constructor of a custom element does not set the IS attribute if local name is the same as type');
+</script>
+</body>
+</html>