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diff --git a/testing/web-platform/tests/html/semantics/popovers/popover-attribute-all-elements.html b/testing/web-platform/tests/html/semantics/popovers/popover-attribute-all-elements.html
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index 0000000000..5a536f026e
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+++ b/testing/web-platform/tests/html/semantics/popovers/popover-attribute-all-elements.html
@@ -0,0 +1,47 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<link rel="author" href="mailto:masonf@chromium.org">
+<link rel=help href="https://open-ui.org/components/popover.research.explainer">
+<meta name="timeout" content="long">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/resources/testdriver.js"></script>
+<script src="/resources/testdriver-actions.js"></script>
+<script src="/resources/testdriver-vendor.js"></script>
+<script src="resources/popover-utils.js"></script>
+<script src="../../resources/common.js"></script>
+
+<body>
+<script>
+setup({ explicit_done: true });
+window.onload = () => {
+  // Loop through all HTML elements that render a box by default:
+  let elementsThatDontRender = ['area', 'audio','base','br','datalist','dialog','embed','head','link','meta','noscript','optgroup','option','param','rp','script','slot','style','template','title','wbr'];
+  const elements = HTML5_ELEMENTS.filter(el => !elementsThatDontRender.includes(el));
+  elements.forEach(tag => {
+    test((t) => {
+      const element = document.createElement(tag);
+      element.setAttribute('popover','auto');
+      document.body.appendChild(element);
+      t.add_cleanup(() => element.remove());
+      assertIsFunctionalPopover(element, true);
+    }, `A <${tag} popover> element should behave as a popover.`);
+    test((t) => {
+      const element = document.createElement(tag);
+      document.body.appendChild(element);
+      t.add_cleanup(() => element.remove());
+      assertNotAPopover(element);
+    }, `A <${tag}> element should *not* behave as a popover.`);
+  });
+  elementsThatDontRender.forEach(tag => {
+    test((t) => {
+      const element = document.createElement(tag);
+      element.setAttribute('popover','auto');
+      document.body.appendChild(element);
+      t.add_cleanup(() => element.remove());
+      assertIsFunctionalPopover(element, false);
+    }, `A <${tag} popover> element should not be rendered.`);
+  });
+  done();
+};
+</script>