1 files changed, 22 insertions, 0 deletions
diff --git a/testing/web-platform/tests/page-visibility/unload-bubbles.html b/testing/web-platform/tests/page-visibility/unload-bubbles.html
new file mode 100644
index 0000000000..19b169c5e6
--- /dev/null
+++ b/testing/web-platform/tests/page-visibility/unload-bubbles.html
@@ -0,0 +1,22 @@
+<!doctype html>
+<title>visibilitychange event bubbles when fired on unload</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<div id="log"></div>
+<script>
+async_test(function(t) {
+  var w = window.open("resources/unload-bubbles.html");
+  window.onmessage = t.step_func(function(event) {
+    if (event.data === "close") {
+      w.close();
+      return;
+    }
+
+    const {state, target, bubbles} = event.data
+    assert_equals(state, "hidden");
+    assert_equals(target, "#document");
+    assert_equals(bubbles, true);
+    t.done();
+  });
+});
+</script>