diff --git a/Tests/LibWeb/Text/expected/wpt-import/dom/lists/DOMTokenList-coverage-for-attributes.txt b/Tests/LibWeb/Text/expected/wpt-import/dom/lists/DOMTokenList-coverage-for-attributes.txt
new file mode 100644
index 00000000000..e71b9bb75c0
--- /dev/null
+++ b/Tests/LibWeb/Text/expected/wpt-import/dom/lists/DOMTokenList-coverage-for-attributes.txt
@@ -0,0 +1,186 @@
+Summary
+
+Harness status: OK
+
+Rerun
+
+Found 175 tests
+
+173 Pass
+2 Fail
+Details
+Result	Test Name	MessagePass	a.classList in http://www.w3.org/1999/xhtml namespace should be DOMTokenList.	
+Pass	area.classList in http://www.w3.org/1999/xhtml namespace should be DOMTokenList.	
+Pass	link.classList in http://www.w3.org/1999/xhtml namespace should be DOMTokenList.	
+Pass	iframe.classList in http://www.w3.org/1999/xhtml namespace should be DOMTokenList.	
+Pass	output.classList in http://www.w3.org/1999/xhtml namespace should be DOMTokenList.	
+Pass	td.classList in http://www.w3.org/1999/xhtml namespace should be DOMTokenList.	
+Pass	th.classList in http://www.w3.org/1999/xhtml namespace should be DOMTokenList.	
+Pass	a.classList in http://www.w3.org/2000/svg namespace should be DOMTokenList.	
+Pass	area.classList in http://www.w3.org/2000/svg namespace should be DOMTokenList.	
+Pass	link.classList in http://www.w3.org/2000/svg namespace should be DOMTokenList.	
+Pass	iframe.classList in http://www.w3.org/2000/svg namespace should be DOMTokenList.	
+Pass	output.classList in http://www.w3.org/2000/svg namespace should be DOMTokenList.	
+Pass	td.classList in http://www.w3.org/2000/svg namespace should be DOMTokenList.	
+Pass	th.classList in http://www.w3.org/2000/svg namespace should be DOMTokenList.	
+Pass	a.classList in http://www.w3.org/1998/Math/MathML namespace should be DOMTokenList.	
+Pass	area.classList in http://www.w3.org/1998/Math/MathML namespace should be DOMTokenList.	
+Pass	link.classList in http://www.w3.org/1998/Math/MathML namespace should be DOMTokenList.	
+Pass	iframe.classList in http://www.w3.org/1998/Math/MathML namespace should be DOMTokenList.	
+Pass	output.classList in http://www.w3.org/1998/Math/MathML namespace should be DOMTokenList.	
+Pass	td.classList in http://www.w3.org/1998/Math/MathML namespace should be DOMTokenList.	
+Pass	th.classList in http://www.w3.org/1998/Math/MathML namespace should be DOMTokenList.	
+Pass	a.classList in http://example.com/ namespace should be DOMTokenList.	
+Pass	area.classList in http://example.com/ namespace should be DOMTokenList.	
+Pass	link.classList in http://example.com/ namespace should be DOMTokenList.	
+Pass	iframe.classList in http://example.com/ namespace should be DOMTokenList.	
+Pass	output.classList in http://example.com/ namespace should be DOMTokenList.	
+Pass	td.classList in http://example.com/ namespace should be DOMTokenList.	
+Pass	th.classList in http://example.com/ namespace should be DOMTokenList.	
+Pass	a.classList in null namespace should be DOMTokenList.	
+Pass	area.classList in null namespace should be DOMTokenList.	
+Pass	link.classList in null namespace should be DOMTokenList.	
+Pass	iframe.classList in null namespace should be DOMTokenList.	
+Pass	output.classList in null namespace should be DOMTokenList.	
+Pass	td.classList in null namespace should be DOMTokenList.	
+Pass	th.classList in null namespace should be DOMTokenList.	
+Pass	a.relList in http://www.w3.org/1999/xhtml namespace should be DOMTokenList.	
+Pass	area.relList in http://www.w3.org/1999/xhtml namespace should be DOMTokenList.	
+Pass	link.relList in http://www.w3.org/1999/xhtml namespace should be DOMTokenList.	
+Pass	iframe.relList in http://www.w3.org/1999/xhtml namespace should be undefined.	
+Pass	output.relList in http://www.w3.org/1999/xhtml namespace should be undefined.	
+Pass	td.relList in http://www.w3.org/1999/xhtml namespace should be undefined.	
+Pass	th.relList in http://www.w3.org/1999/xhtml namespace should be undefined.	
+Pass	a.relList in http://www.w3.org/2000/svg namespace should be DOMTokenList.	
+Pass	area.relList in http://www.w3.org/2000/svg namespace should be undefined.	
+Pass	link.relList in http://www.w3.org/2000/svg namespace should be undefined.	
+Pass	iframe.relList in http://www.w3.org/2000/svg namespace should be undefined.	
+Pass	output.relList in http://www.w3.org/2000/svg namespace should be undefined.	
+Pass	td.relList in http://www.w3.org/2000/svg namespace should be undefined.	
+Pass	th.relList in http://www.w3.org/2000/svg namespace should be undefined.	
+Pass	a.relList in http://www.w3.org/1998/Math/MathML namespace should be undefined.	
+Pass	area.relList in http://www.w3.org/1998/Math/MathML namespace should be undefined.	
+Pass	link.relList in http://www.w3.org/1998/Math/MathML namespace should be undefined.	
+Pass	iframe.relList in http://www.w3.org/1998/Math/MathML namespace should be undefined.	
+Pass	output.relList in http://www.w3.org/1998/Math/MathML namespace should be undefined.	
+Pass	td.relList in http://www.w3.org/1998/Math/MathML namespace should be undefined.	
+Pass	th.relList in http://www.w3.org/1998/Math/MathML namespace should be undefined.	
+Pass	a.relList in http://example.com/ namespace should be undefined.	
+Pass	area.relList in http://example.com/ namespace should be undefined.	
+Pass	link.relList in http://example.com/ namespace should be undefined.	
+Pass	iframe.relList in http://example.com/ namespace should be undefined.	
+Pass	output.relList in http://example.com/ namespace should be undefined.	
+Pass	td.relList in http://example.com/ namespace should be undefined.	
+Pass	th.relList in http://example.com/ namespace should be undefined.	
+Pass	a.relList in null namespace should be undefined.	
+Pass	area.relList in null namespace should be undefined.	
+Pass	link.relList in null namespace should be undefined.	
+Pass	iframe.relList in null namespace should be undefined.	
+Pass	output.relList in null namespace should be undefined.	
+Pass	td.relList in null namespace should be undefined.	
+Pass	th.relList in null namespace should be undefined.	
+Pass	a.htmlFor in http://www.w3.org/1999/xhtml namespace should be undefined.	
+Pass	area.htmlFor in http://www.w3.org/1999/xhtml namespace should be undefined.	
+Pass	link.htmlFor in http://www.w3.org/1999/xhtml namespace should be undefined.	
+Pass	iframe.htmlFor in http://www.w3.org/1999/xhtml namespace should be undefined.	
+Pass	output.htmlFor in http://www.w3.org/1999/xhtml namespace should be DOMTokenList.	
+Pass	td.htmlFor in http://www.w3.org/1999/xhtml namespace should be undefined.	
+Pass	th.htmlFor in http://www.w3.org/1999/xhtml namespace should be undefined.	
+Pass	a.htmlFor in http://www.w3.org/2000/svg namespace should be undefined.	
+Pass	area.htmlFor in http://www.w3.org/2000/svg namespace should be undefined.	
+Pass	link.htmlFor in http://www.w3.org/2000/svg namespace should be undefined.	
+Pass	iframe.htmlFor in http://www.w3.org/2000/svg namespace should be undefined.	
+Pass	output.htmlFor in http://www.w3.org/2000/svg namespace should be undefined.	
+Pass	td.htmlFor in http://www.w3.org/2000/svg namespace should be undefined.	
+Pass	th.htmlFor in http://www.w3.org/2000/svg namespace should be undefined.	
+Pass	a.htmlFor in http://www.w3.org/1998/Math/MathML namespace should be undefined.	
+Pass	area.htmlFor in http://www.w3.org/1998/Math/MathML namespace should be undefined.	
+Pass	link.htmlFor in http://www.w3.org/1998/Math/MathML namespace should be undefined.	
+Pass	iframe.htmlFor in http://www.w3.org/1998/Math/MathML namespace should be undefined.	
+Pass	output.htmlFor in http://www.w3.org/1998/Math/MathML namespace should be undefined.	
+Pass	td.htmlFor in http://www.w3.org/1998/Math/MathML namespace should be undefined.	
+Pass	th.htmlFor in http://www.w3.org/1998/Math/MathML namespace should be undefined.	
+Pass	a.htmlFor in http://example.com/ namespace should be undefined.	
+Pass	area.htmlFor in http://example.com/ namespace should be undefined.	
+Pass	link.htmlFor in http://example.com/ namespace should be undefined.	
+Pass	iframe.htmlFor in http://example.com/ namespace should be undefined.	
+Pass	output.htmlFor in http://example.com/ namespace should be undefined.	
+Pass	td.htmlFor in http://example.com/ namespace should be undefined.	
+Pass	th.htmlFor in http://example.com/ namespace should be undefined.	
+Pass	a.htmlFor in null namespace should be undefined.	
+Pass	area.htmlFor in null namespace should be undefined.	
+Pass	link.htmlFor in null namespace should be undefined.	
+Pass	iframe.htmlFor in null namespace should be undefined.	
+Pass	output.htmlFor in null namespace should be undefined.	
+Pass	td.htmlFor in null namespace should be undefined.	
+Pass	th.htmlFor in null namespace should be undefined.	
+Pass	a.sandbox in http://www.w3.org/1999/xhtml namespace should be undefined.	
+Pass	area.sandbox in http://www.w3.org/1999/xhtml namespace should be undefined.	
+Pass	link.sandbox in http://www.w3.org/1999/xhtml namespace should be undefined.	
+Fail	iframe.sandbox in http://www.w3.org/1999/xhtml namespace should be DOMTokenList.	
+Pass	output.sandbox in http://www.w3.org/1999/xhtml namespace should be undefined.	
+Pass	td.sandbox in http://www.w3.org/1999/xhtml namespace should be undefined.	
+Pass	th.sandbox in http://www.w3.org/1999/xhtml namespace should be undefined.	
+Pass	a.sandbox in http://www.w3.org/2000/svg namespace should be undefined.	
+Pass	area.sandbox in http://www.w3.org/2000/svg namespace should be undefined.	
+Pass	link.sandbox in http://www.w3.org/2000/svg namespace should be undefined.	
+Pass	iframe.sandbox in http://www.w3.org/2000/svg namespace should be undefined.	
+Pass	output.sandbox in http://www.w3.org/2000/svg namespace should be undefined.	
+Pass	td.sandbox in http://www.w3.org/2000/svg namespace should be undefined.	
+Pass	th.sandbox in http://www.w3.org/2000/svg namespace should be undefined.	
+Pass	a.sandbox in http://www.w3.org/1998/Math/MathML namespace should be undefined.	
+Pass	area.sandbox in http://www.w3.org/1998/Math/MathML namespace should be undefined.	
+Pass	link.sandbox in http://www.w3.org/1998/Math/MathML namespace should be undefined.	
+Pass	iframe.sandbox in http://www.w3.org/1998/Math/MathML namespace should be undefined.	
+Pass	output.sandbox in http://www.w3.org/1998/Math/MathML namespace should be undefined.	
+Pass	td.sandbox in http://www.w3.org/1998/Math/MathML namespace should be undefined.	
+Pass	th.sandbox in http://www.w3.org/1998/Math/MathML namespace should be undefined.	
+Pass	a.sandbox in http://example.com/ namespace should be undefined.	
+Pass	area.sandbox in http://example.com/ namespace should be undefined.	
+Pass	link.sandbox in http://example.com/ namespace should be undefined.	
+Pass	iframe.sandbox in http://example.com/ namespace should be undefined.	
+Pass	output.sandbox in http://example.com/ namespace should be undefined.	
+Pass	td.sandbox in http://example.com/ namespace should be undefined.	
+Pass	th.sandbox in http://example.com/ namespace should be undefined.	
+Pass	a.sandbox in null namespace should be undefined.	
+Pass	area.sandbox in null namespace should be undefined.	
+Pass	link.sandbox in null namespace should be undefined.	
+Pass	iframe.sandbox in null namespace should be undefined.	
+Pass	output.sandbox in null namespace should be undefined.	
+Pass	td.sandbox in null namespace should be undefined.	
+Pass	th.sandbox in null namespace should be undefined.	
+Pass	a.sizes in http://www.w3.org/1999/xhtml namespace should be undefined.	
+Pass	area.sizes in http://www.w3.org/1999/xhtml namespace should be undefined.	
+Fail	link.sizes in http://www.w3.org/1999/xhtml namespace should be DOMTokenList.	
+Pass	iframe.sizes in http://www.w3.org/1999/xhtml namespace should be undefined.	
+Pass	output.sizes in http://www.w3.org/1999/xhtml namespace should be undefined.	
+Pass	td.sizes in http://www.w3.org/1999/xhtml namespace should be undefined.	
+Pass	th.sizes in http://www.w3.org/1999/xhtml namespace should be undefined.	
+Pass	a.sizes in http://www.w3.org/2000/svg namespace should be undefined.	
+Pass	area.sizes in http://www.w3.org/2000/svg namespace should be undefined.	
+Pass	link.sizes in http://www.w3.org/2000/svg namespace should be undefined.	
+Pass	iframe.sizes in http://www.w3.org/2000/svg namespace should be undefined.	
+Pass	output.sizes in http://www.w3.org/2000/svg namespace should be undefined.	
+Pass	td.sizes in http://www.w3.org/2000/svg namespace should be undefined.	
+Pass	th.sizes in http://www.w3.org/2000/svg namespace should be undefined.	
+Pass	a.sizes in http://www.w3.org/1998/Math/MathML namespace should be undefined.	
+Pass	area.sizes in http://www.w3.org/1998/Math/MathML namespace should be undefined.	
+Pass	link.sizes in http://www.w3.org/1998/Math/MathML namespace should be undefined.	
+Pass	iframe.sizes in http://www.w3.org/1998/Math/MathML namespace should be undefined.	
+Pass	output.sizes in http://www.w3.org/1998/Math/MathML namespace should be undefined.	
+Pass	td.sizes in http://www.w3.org/1998/Math/MathML namespace should be undefined.	
+Pass	th.sizes in http://www.w3.org/1998/Math/MathML namespace should be undefined.	
+Pass	a.sizes in http://example.com/ namespace should be undefined.	
+Pass	area.sizes in http://example.com/ namespace should be undefined.	
+Pass	link.sizes in http://example.com/ namespace should be undefined.	
+Pass	iframe.sizes in http://example.com/ namespace should be undefined.	
+Pass	output.sizes in http://example.com/ namespace should be undefined.	
+Pass	td.sizes in http://example.com/ namespace should be undefined.	
+Pass	th.sizes in http://example.com/ namespace should be undefined.	
+Pass	a.sizes in null namespace should be undefined.	
+Pass	area.sizes in null namespace should be undefined.	
+Pass	link.sizes in null namespace should be undefined.	
+Pass	iframe.sizes in null namespace should be undefined.	
+Pass	output.sizes in null namespace should be undefined.	
+Pass	td.sizes in null namespace should be undefined.	
+Pass	th.sizes in null namespace should be undefined.	
\ No newline at end of file
diff --git a/Tests/LibWeb/Text/input/wpt-import/dom/lists/DOMTokenList-coverage-for-attributes.html b/Tests/LibWeb/Text/input/wpt-import/dom/lists/DOMTokenList-coverage-for-attributes.html
new file mode 100644
index 00000000000..208884ecfa7
--- /dev/null
+++ b/Tests/LibWeb/Text/input/wpt-import/dom/lists/DOMTokenList-coverage-for-attributes.html
@@ -0,0 +1,55 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>DOMTokenList coverage for attributes</title>
+<script src="../../resources/testharness.js"></script>
+<script src="../../resources/testharnessreport.js"></script>
+<div id=log></div>
+<script>
+"use strict";
+
+var pairs = [
+  // Defined in DOM
+  {attr: "classList", sup: ["anyElement"]},
+  // Defined in HTML except for a which is also SVG
+  {attr: "relList", sup: ["a", "area", "link"]},
+  // Defined in HTML
+  {attr: "htmlFor", sup: ["output"]},
+  {attr: "sandbox", sup: ["iframe"]},
+  {attr: "sizes", sup: ["link"]}
+];
+var namespaces = [
+  "http://www.w3.org/1999/xhtml",
+  "http://www.w3.org/2000/svg",
+  "http://www.w3.org/1998/Math/MathML",
+  "http://example.com/",
+  ""
+];
+
+var elements = ["a", "area", "link", "iframe", "output", "td", "th"];
+function testAttr(pair, new_el){
+  return (pair.attr === "classList" ||
+          (pair.attr === "relList" && new_el.localName === "a" &&
+           new_el.namespaceURI === "http://www.w3.org/2000/svg") ||
+          (new_el.namespaceURI === "http://www.w3.org/1999/xhtml" &&
+           pair.sup.indexOf(new_el.localName) != -1));
+}
+
+pairs.forEach(function(pair) {
+  namespaces.forEach(function(ns) {
+    elements.forEach(function(el) {
+      var new_el = document.createElementNS(ns, el);
+      if (testAttr(pair, new_el)) {
+        test(function() {
+          assert_class_string(new_el[pair.attr], "DOMTokenList");
+        }, new_el.localName + "." + pair.attr + " in " + new_el.namespaceURI + " namespace should be DOMTokenList.");
+      }
+      else {
+        test(function() {
+          assert_equals(new_el[pair.attr], undefined);
+       }, new_el.localName + "." + pair.attr + " in " + new_el.namespaceURI + " namespace should be undefined.");
+      }
+    });
+  });
+});
+
+</script>