1 files changed, 30 insertions, 0 deletions
diff --git a/testing/web-platform/tests/html/dom/documents/dom-tree-accessors/Document.getElementsByClassName-null-undef.html b/testing/web-platform/tests/html/dom/documents/dom-tree-accessors/Document.getElementsByClassName-null-undef.html
new file mode 100644
index 0000000000..dc132e5ec7
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/documents/dom-tree-accessors/Document.getElementsByClassName-null-undef.html
@@ -0,0 +1,30 @@
+<!doctype html>
+<title>getElementsByClassName and null/undefined</title>
+<link rel="author" title="Ms2ger" href="mailto:ms2ger@gmail.com">
+<link rel="help" href="https://html.spec.whatwg.org/multipage/#dom-getelementsbyclassname">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<div id="log"></div>
+<div id="test">
+<p id="p1"></p>
+<p class="undefined" id="p2"></p>
+<p class="null" id="p3"></p>
+<p class="undefined null" id="p4"></p>
+</div>
+<script>
+test(function() {
+  var wrapper = document.getElementById("test");
+  assert_equals(document.getElementsByClassName(undefined).length, 2);
+  assert_equals(document.getElementsByClassName(undefined)[0],
+    document.getElementById("p2"));
+  assert_equals(document.getElementsByClassName(undefined)[1],
+    document.getElementById("p4"));
+/*
+  assert_equals(document.getElementsByClassName(null).length, 2);
+  assert_equals(document.getElementsByClassName(null)[0],
+    document.getElementById("p3"));
+  assert_equals(document.getElementsByClassName(null)[1],
+    document.getElementById("p4"));
+*/
+});
+</script>