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chromium/third_party/blink/web_tests/external/wpt/html/browsers/history/the-history-interface/history_pushstate_url.html 

<!doctype html>
<html>
<head>
<meta charset="utf-8">
<title>History pushState sets the url</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
</head>
<body>
<div id="log"></div>
<script>
async_test(function(t) {
    var oldLocation = window.location.toString();
    window.history.pushState(null, "", "#hash");
    assert_equals(oldLocation + "#hash", window.location.toString(), "pushState updates url");
    history.back();
    window.onhashchange = () => {
        assert_equals(oldLocation, window.location.toString(), 'history traversal restores old url');
        t.done();
    };
}, "history pushState sets url");
</script>
</body>
</html>