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<!DOCTYPE html>
<html lang="en">
<head>
<meta http-equiv="content-type" content="text/html; charset=utf-8">
</head>
<body onload="test();">
<script>
/**
* a http redirection happens when navigating to that entry, the history
* index would mess up.
*
* The test case emulates the circumstance by the following steps
* 1) Navigate to file_bug1300461_back.html which is not bf-cachable.
* 2) In file_bug1300461_back.html, replace its own history state to
* file_bug1300461_redirect.html.
* 3) Back, and then forward. Since the document is not in bfcache, it
* tries to load file_bug1300461_redirect.html directly.
* 4) file_bug1300461_redirect.html redirects UA to
* file_bug1300461_back.html through HTTP 301 header.
*
* We verify the history index, canGoBack, canGoForward, etc. keep correct
* in this process.
*/
let Ci = SpecialPowers.Ci;
let webNav = SpecialPowers.wrap(window)
.docShell
.QueryInterface(Ci.nsIWebNavigation);
let shistory = webNav.sessionHistory;
let testSteps = [
function() {
opener.is(shistory.count, 1, "check history length");
opener.is(shistory.index, 0, "check history index");
opener.ok(!webNav.canGoForward, "check canGoForward");
setTimeout(() => window.location = "file_bug1300461_back.html", 0);
},
function() {
opener.is(shistory.count, 2, "check history length");
opener.is(shistory.index, 0, "check history index");
opener.ok(webNav.canGoForward, "check canGoForward");
window.history.forward();
},
function() {
opener.is(shistory.count, 2, "check history length");
opener.is(shistory.index, 0, "check history index");
opener.ok(webNav.canGoForward, "check canGoForward");
opener.info("file_bug1300461.html tests finished");
opener.finishTest();
},
];
function test() {
if (opener) {
opener.info("file_bug1300461.html test " + opener.testCount);
testSteps[opener.testCount++]();
}
}
</script>
</body>
</html>