1 files changed, 19 insertions, 0 deletions
diff --git a/testing/web-platform/tests/dom/nodes/getElementsByClassName-13.htm b/testing/web-platform/tests/dom/nodes/getElementsByClassName-13.htm
new file mode 100644
index 0000000000..f3af106aed
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/getElementsByClassName-13.htm
@@ -0,0 +1,19 @@
+<!doctype html>
+<html class="a">
+ <head>
+  <title>element.getElementsByClassName(): adding an element</title>
+  <script src="/resources/testharness.js"></script>
+  <script src="/resources/testharnessreport.js"></script>
+ </head>
+ <body class="a">
+  <div id="log"></div>
+  <script>test(function() {
+                 var collection = document.body.getElementsByClassName("a");
+                 var ele = document.createElement("x-y-z");
+                 ele.className = "a";
+                 document.body.appendChild(ele);
+                 assert_array_equals(collection, [ele]);
+               })
+  </script>
+ </body>
+</html>