1 files changed, 29 insertions, 0 deletions
diff --git a/testing/web-platform/tests/html/semantics/popovers/popover-removal-2.html b/testing/web-platform/tests/html/semantics/popovers/popover-removal-2.html
new file mode 100644
index 0000000000..b21c0bb557
--- /dev/null
+++ b/testing/web-platform/tests/html/semantics/popovers/popover-removal-2.html
@@ -0,0 +1,29 @@
+<!DOCTYPE html>
+<meta charset="utf-8" />
+<title>Popover document removal behavior</title>
+<link rel="author" href="mailto:masonf@chromium.org">
+<link rel=help href="https://open-ui.org/components/popover.research.explainer">
+<link rel=help href="https://html.spec.whatwg.org/multipage/popover.html">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+
+<iframe id=frame1 srcdoc="<div popover id=popover>Popover</div>"></iframe>
+<iframe id=frame2></iframe>
+
+<script>
+  window.onload = () => {
+    test(t => {
+      const frame1Doc = document.getElementById('frame1').contentDocument;
+      const frame2Doc = document.getElementById('frame2').contentDocument;
+      const popover = frame1Doc.querySelector('[popover]');
+      assert_true(!!popover);
+      assert_false(popover.matches(':popover-open'));
+      popover.showPopover();
+      assert_true(popover.matches(':popover-open'));
+      frame2Doc.body.appendChild(popover);
+      assert_false(popover.matches(':popover-open'));
+      popover.showPopover();
+      assert_true(popover.matches(':popover-open'));
+    }, 'Moving popover between documents shouldn\'t cause issues');
+  };
+</script>