replaceState-in-unload-then-remove-iframe.html

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This WPT test may be referenced by the following Test IDs:
- /navigation-api/navigate-event/replaceState-in-unload-then-remove-iframe.html - WPT Dashboard Interop Dashboard

<!doctype html>

<script src="/resources/testharness.js"></script>

<script src="/resources/testharnessreport.js"></script>

<iframe id="i" src="/common/blank.html"></iframe>

<script>

async_test(t => {

  window.onload = t.step_func(() => {

    i.contentWindow.onunload = t.step_func(() => {

      i.contentWindow.history.replaceState(null, "", "#");

      i.remove();

      t.step_timeout(t.step_func_done(), 0);

});

    i.contentWindow.location = "/common/blank.html?1";

});

}, "reacting to the navigate event doesn't crash when replaceState is called in onunload");

</script>