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diff --git a/testing/web-platform/tests/html/semantics/embedded-content/the-iframe-element/srcdoc-attribute-reset.html b/testing/web-platform/tests/html/semantics/embedded-content/the-iframe-element/srcdoc-attribute-reset.html
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+++ b/testing/web-platform/tests/html/semantics/embedded-content/the-iframe-element/srcdoc-attribute-reset.html
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+<title>Verify that clearing srcdoc resets the iframe's content.</title>
+<link rel="help" href="https://html.spec.whatwg.org/multipage/iframe-embed-object.html#process-the-iframe-attributes">
+<link rel="author" title="James MacLean" href="mailto:wjmaclean@chromium.org">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+
+<iframe id=myframe srcdoc='srcdoc_text'></iframe>
+<script>
+  'use strict';
+
+  async_test(function(t) {
+    window.onload = () => {
+      // Verify that the srcdoc content is loaded before we start.
+      t.step(() => {
+        assert_true(typeof myframe.contentDocument !== 'undefined',
+            'iframe has contentDocument');
+        assert_equals(myframe.contentDocument.body.innerText, 'srcdoc_text',
+            'iframe contains srcdoc content');
+      });
+
+      myframe.onload = t.step_func_done(function() {
+        assert_true(typeof myframe.contentDocument !== 'undefined',
+            'iframe has contentDocument');
+        assert_equals(myframe.contentDocument.body.innerText, '',
+            'iframe content is empty');
+      });
+
+      // Don't remove srcdoc until the initial load has completed, and the
+      // frame's onload handler is in place.
+      myframe.removeAttribute('srcdoc');
+    };
+  }, 'Verify that the frame reloads with empty body after we remove srcdoc.');
+</script>