1 files changed, 19 insertions, 0 deletions
diff --git a/testing/web-platform/tests/page-visibility/resources/unload-bubbles.html b/testing/web-platform/tests/page-visibility/resources/unload-bubbles.html
new file mode 100644
index 0000000000..cc9e14f787
--- /dev/null
+++ b/testing/web-platform/tests/page-visibility/resources/unload-bubbles.html
@@ -0,0 +1,19 @@
+<!doctype html>
+<html>
+<head><title>Document</title></head>
+<body>
+<h1>Document</h1>
+<script>
+window.addEventListener("load", function() {
+  window.addEventListener("visibilitychange", event => {
+    opener.postMessage({
+                        target: event.target.nodeName,
+                        state: document.visibilityState,
+                        bubbles: event.bubbles
+                      }, "*");
+  });
+  opener.postMessage("close", "*");
+});
+</script>
+</body>
+</html>