diff --git a/test/ecmascript/assert/element.nextSibling.html b/test/ecmascript/assert/element.nextSibling.html
new file mode 100644
index 00000000..3dc79c14
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+++ b/test/ecmascript/assert/element.nextSibling.html
@@ -0,0 +1,32 @@
+<!DOCTYPE html>
+<html>
+<body>
+
+<p>Example list:</p>
+
+<ul><li id="item1">Coffee (first li)</li><li id="item2">Tea (second li)</li></ul>
+
+<p>Click the button to get the HTML content of the next sibling of the first list item.</p>
+
+<button onclick="myFunction()">Try it</button>
+
+<p><strong>Note:</strong> Whitespace inside elements is considered as text, and text 
+is considered as nodes.</p>
+
+<p>If you add whitespace between the two li elements, the result will be "undefined".</p>
+
+<p id="demo"></p>
+
+<script>
+function myFunction() {
+  var x = document.getElementById("item1").nextSibling.innerHTML;
+  console.assert(x === 'Tea (second li)', 'Tea (second li)');
+}
+
+console.error("element.nextSibling.html");
+myFunction();
+console.exit(0);
+</script>
+
+</body>
+</html>
