diff -r 000000000000 -r 6474c204b198 browser/base/content/test/plugins/browser_bug818118.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/browser/base/content/test/plugins/browser_bug818118.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,45 @@
+var gHttpTestRoot = getRootDirectory(gTestPath).replace("chrome://mochitests/content/", "http://127.0.0.1:8888/");
+var gTestBrowser = null;
+
+Components.utils.import("resource://gre/modules/Services.jsm");
+
+function test() {
+  waitForExplicitFinish();
+  registerCleanupFunction(function() {
+    Services.prefs.clearUserPref("plugins.click_to_play");
+    gTestBrowser.removeEventListener("load", pageLoad, true);
+  });
+
+  Services.prefs.setBoolPref("plugins.click_to_play", true);
+  setTestPluginEnabledState(Ci.nsIPluginTag.STATE_CLICKTOPLAY);
+
+  gBrowser.selectedTab = gBrowser.addTab();
+  gTestBrowser = gBrowser.selectedBrowser;
+  gTestBrowser.addEventListener("load", pageLoad, true);
+  gTestBrowser.contentWindow.location = gHttpTestRoot + "plugin_both.html";
+}
+
+function pageLoad(aEvent) {
+  // Due to layout being async, "PluginBindAttached" may trigger later.
+  // This forces a layout flush, thus triggering it, and schedules the
+  // test so it is definitely executed afterwards.
+  gTestBrowser.contentDocument.getElementById('test').clientTop;
+  executeSoon(actualTest);
+}
+
+function actualTest() {
+  var popupNotification = PopupNotifications.getNotification("click-to-play-plugins", gTestBrowser);
+  ok(popupNotification, "should have a click-to-play notification");
+  var plugin = gTestBrowser.contentDocument.getElementById("test");
+  ok(plugin, "should have known plugin in page");
+  var objLoadingContent = plugin.QueryInterface(Ci.nsIObjectLoadingContent);
+  is(objLoadingContent.pluginFallbackType, Ci.nsIObjectLoadingContent.PLUGIN_CLICK_TO_PLAY, "plugin fallback type should be PLUGIN_CLICK_TO_PLAY");
+  ok(!objLoadingContent.activated, "plugin should not be activated");
+
+  var unknown = gTestBrowser.contentDocument.getElementById("unknown");
+  ok(unknown, "should have unknown plugin in page");
+
+  gBrowser.removeCurrentTab();
+  window.focus();
+  finish();
+}