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<!doctype html>
<meta charset="utf-8">
<title>Joint session history length does not include entries from a removed iframe.</title>
<meta name="timeout" content="long">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<body>
<iframe id="frame" src="about:blank"></iframe>
<script>
async_test(function(t) {
t.step_timeout(() => {
var child = document.getElementById("frame");
var old_history_len = history.length;
child.onload = () => {
assert_equals(old_history_len + 1, history.length);
document.body.removeChild(document.getElementById("frame"));
assert_equals(old_history_len, history.length);
t.done();
}
child.src = "joint-session-history-filler.html";
}, 1000);
});
</script>
</body>
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