<html><head><script>varloadCount=0;functionloadListener(){++loadCount;if(loadCount==2){// Use a timer to ensure we don't get extra load events.setTimeout(function(){vardoc1URI=document.getElementById("i1").contentDocument.documentURI;opener.ok(doc1URI.includes("frame1.html"),"Should have loaded the initial page to the first iframe. Got "+doc1URI);vardoc2URI=document.getElementById("i2").contentDocument.documentURI;opener.ok(doc2URI.includes("frame1.html"),"Should have loaded the initial page to the second iframe. Got "+doc2URI);opener.finishTest();},1000);}elseif(loadCount>2){opener.ok(false,"Too many load events");}// if we don't get enough load events, the test will time out.}functionsetupIframe(id){varifr=document.getElementById(id);returnnewPromise(function(resolve){ifr.onload=function(){// Replace load listener to catch page loads from the session history.ifr.onload=loadListener;// Need to use setTimeout, because triggering loads inside// load event listener has special behavior since at the moment// the docshell keeps track of whether it is executing a load handler or not.setTimeout(resolve);}ifr.contentWindow.location.href="frame2.html";});}asyncfunctiontest(){awaitsetupIframe("i1");awaitsetupIframe("i2");history.go(-2);}</script></head><bodyonload="setTimeout(test)"><iframeid="i1"src="frame1.html"></iframe><iframeid="i2"src="frame1.html"></iframe></body></html>
