1 files changed, 41 insertions, 0 deletions
diff --git a/docshell/test/browser/onpageshow_message.html b/docshell/test/browser/onpageshow_message.html
new file mode 100644
index 0000000000..105c06f8db
--- /dev/null
+++ b/docshell/test/browser/onpageshow_message.html
@@ -0,0 +1,41 @@
+<html>
+  <head>
+    <meta charset="utf-8">
+    <script>
+      addEventListener("pageshow", function() {
+        var bc = new BroadcastChannel("browser_browsingContext");
+        function frameData() {
+          var win = SpecialPowers.wrap(frames[0]);
+          bc.postMessage(
+            { framesLength: frames.length,
+              browsingContextId: win.docShell.browsingContext.id,
+              outerWindowId: win.docShell.outerWindowID
+            });
+        }
+
+        bc.onmessage = function(event) {
+          if (event.data == "createiframe") {
+            let frame = document.createElement("iframe");
+            frame.src = "dummy_page.html";
+            document.body.appendChild(frame);
+            frame.onload = frameData;
+          } else if (event.data == "nextpage") {
+            bc.close();
+            location.href = "onload_message.html";
+          } else if (event.data == "queryframes") {
+            frameData();
+          } else if (event.data == "close") {
+            bc.postMessage("closed");
+            bc.close();
+            window.close();
+          }
+        }
+        bc.postMessage("pageshow");
+      });
+    </script>
+  </head>
+  <body>
+    This file posts a message containing "pageshow" to a BroadcastChannel and
+    keep the channel open for commands.
+  </body>
+</html>