michael@0: function test() {
michael@0:   waitForExplicitFinish();
michael@0:   let tab = gBrowser.selectedTab = gBrowser.addTab(
michael@0:     "http://mochi.test:8888/browser/browser/base/content/test/general/browser_bug479408_sample.html");
michael@0:   
michael@0:   gBrowser.addEventListener("DOMLinkAdded", function(aEvent) {
michael@0:     gBrowser.removeEventListener("DOMLinkAdded", arguments.callee, true);
michael@0:     
michael@0:     executeSoon(function() {
michael@0:       ok(!tab.linkedBrowser.engines,
michael@0:          "the subframe's search engine wasn't detected");
michael@0:       
michael@0:       gBrowser.removeTab(tab);
michael@0:       finish();
michael@0:     });
michael@0:   }, true);
michael@0: }