after-load-pushState.html

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This WPT test may be referenced by the following Test IDs:
- /html/browsers/browsing-the-web/history-traversal/event-order/after-load-pushState.html - WPT Dashboard Interop Dashboard

<!DOCTYPE html>

<meta charset="utf-8">

<title>Popstate/hashchange/load event ordering</title>

<script>

// Set these up super-early before we hit the network for the test harness, just in case.

window.eventOrder = [];

window.onhashchange = () => window.eventOrder.push("hashchange");

window.onpopstate = () => window.eventOrder.push("popstate");

window.onload = () => window.eventOrder.push("load");

</script>

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

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

<script>

async_test(t => {

  assert_array_equals(window.eventOrder, []);

  // 0 timeout is necessary because if we do pushState before load is finished firing it counts as a replacement.

  window.addEventListener("load", () => t.step_timeout(() => {

    assert_array_equals(window.eventOrder, ["load"]);

    t.step_timeout(t.step_func_done(() => {

      assert_array_equals(window.eventOrder, ["load"]);

    }), 100);

    history.pushState({ state: "new state" }, "");

  }, 0));

}, "when pushing state, after the load event");

</script>