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<html>
<head>
<script>
function testDone() {
document.body.firstChild.remove();
var isOK = false;
try {
isOK = history.previous != location;
} catch (ex) {
// history.previous should throw if this is the first page in shistory.
isOK = true;
}
document.body.textContent = isOK ? "PASSED" : "FAILED";
opener.ok(isOK, "Duplicate session history entries should have been removed!");
opener.finishTest();
}
function ifrload() {
setTimeout(testDone, 0);
}
function test() {
var ifr = document.getElementsByTagName("iframe")[0];
ifr.onload = ifrload;
ifr.src = "data:text/html,doc2";
}
</script>
</head>
<body onload="setTimeout(test, 0)"><iframe src="data:text/html,doc1"></iframe>
</body>
</html>