popstate_event.html

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This test has a WPT meta file that expects 1 subtest issues.
This WPT test may be referenced by the following Test IDs:
- /html/browsers/browsing-the-web/history-traversal/popstate_event.html - WPT Dashboard Interop Dashboard

<!doctype html>

<title>Queue a task to fire popstate event</title>

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

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

<div id="log"></div>

<script>

t = async_test();

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

  var states = [];

  var timer = null;

  history.pushState("a", "State a", "/a");

  history.pushState("b", "State b", "/b");

  history.back();

  window.onpopstate = t.step_func(function (e) {

    assert_true(e.isTrusted, "isTrusted");

    assert_equals(e.target, window, "target");

    assert_equals(e.type, "popstate", "type");

    assert_true(e instanceof PopStateEvent, "is PopStateEvent");

    assert_false(e.bubbles, "bubbles");

    assert_false(e.cancelable, "cancelable");

    assert_not_equals(e.hasUAVisualTransition, undefined);

    states.push(e.state);

    if (states.length === 2) {

      check_result();

    } else if (timer === null) {

      timer = setTimeout(function() {check_result()}, 500);

})

  check_result = t.step_func(function() {

    clearTimeout(timer);

    try {

      assert_array_equals(states, ["a", null]);

      t.done();

    } finally {

      location.hash = "";

});

  setTimeout(function() {history.back()}, 0);

});

</script>