1 files changed, 17 insertions, 0 deletions
diff --git a/toolkit/components/antitracking/test/browser/3rdPartyOpenUI.html b/toolkit/components/antitracking/test/browser/3rdPartyOpenUI.html
new file mode 100644
index 0000000000..5afbb5d89b
--- /dev/null
+++ b/toolkit/components/antitracking/test/browser/3rdPartyOpenUI.html
@@ -0,0 +1,17 @@
+<html>
+<head>
+  <title>A popup!</title>
+</head>
+<body>
+<h1>hi!</h1>
+<script>
+
+SpecialPowers.wrap(document).userInteractionForTesting();
+if (window.location.search == "?messageme") {
+  window.opener.postMessage("done", "*");
+}
+window.close();
+
+</script>
+</body>
+</html>