1 files changed, 32 insertions, 0 deletions
diff --git a/testing/web-platform/tests/dom/nodes/Element-hasAttribute.html b/testing/web-platform/tests/dom/nodes/Element-hasAttribute.html
new file mode 100644
index 0000000000..26528d7569
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Element-hasAttribute.html
@@ -0,0 +1,32 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>Element.prototype.hasAttribute</title>
+<link rel=help href="https://dom.spec.whatwg.org/#dom-element-hasattribute">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+
+<span data-e2="2" data-F2="3" id="t"></span>
+
+<script>
+"use strict";
+
+test(() => {
+
+  const el = document.createElement("p");
+  el.setAttributeNS("foo", "x", "first");
+
+  assert_true(el.hasAttribute("x"));
+
+}, "hasAttribute should check for attribute presence, irrespective of namespace");
+
+test(() => {
+
+  const el = document.getElementById("t");
+
+  assert_true(el.hasAttribute("data-e2"));
+  assert_true(el.hasAttribute("data-E2"));
+  assert_true(el.hasAttribute("data-f2"));
+  assert_true(el.hasAttribute("data-F2"));
+
+}, "hasAttribute should work with all attribute casings");
+</script>