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diff --git a/testing/web-platform/tests/custom-elements/v0/registering/definition-construction-algorithm-name-is-null.html b/testing/web-platform/tests/custom-elements/v0/registering/definition-construction-algorithm-name-is-null.html
new file mode 100644
index 000000000..2b76818d6
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+++ b/testing/web-platform/tests/custom-elements/v0/registering/definition-construction-algorithm-name-is-null.html
@@ -0,0 +1,40 @@
+<!DOCTYPE html>
+<html>
+<head>
+<title>If NAME is null then localName must be set to TYPE</title>
+<meta name="author" title="Vasiliy Degtyarev" href="mailto:vasya@unipro.ru">
+<meta name="author" title="Sergey G. Grekhov" href="mailto:sgrekhov@unipro.ru">
+<meta name="assert" content="If NAME is null then localName must be set to TYPE">
+<link rel="help" href="http://www.w3.org/TR/custom-elements/#registering-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();
+    var name = 'x-a';
+    var proto = Object.create(HTMLElement.prototype);
+    var GeneratedConstructor = doc.registerElement(name, {prototype: proto});
+    var customElement = new GeneratedConstructor();
+
+    assert_equals(customElement.localName, name, 'LocalName should be a type in case of ' +
+        'attempt to register a custom element and local name is not provided');
+}, 'If NAME is not specified then localName must be set to TYPE');
+
+
+test(function() {
+    var doc = newHTMLDocument();
+    var name = 'x-b';
+    var proto = Object.create(HTMLElement.prototype);
+    var GeneratedConstructor = doc.registerElement(name, {prototype: proto, extends: null});
+    var customElement = new GeneratedConstructor();
+
+    assert_equals(customElement.localName, name, 'LocalName should be a type in case of ' +
+        'attempt to register a custom element and name is null');
+}, 'If NAME is null then localName must be set to TYPE');
+</script>
+</body>
+</html>