PopStateEvent.html

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This test has a WPT meta file that expects 2 subtest issues.
This WPT test may be referenced by the following Test IDs:
- /html/browsers/browsing-the-web/history-traversal/PopStateEvent.html - WPT Dashboard Interop Dashboard

<!doctype html>

<meta charset=utf-8>

<title>Synthetic popstate events</title>

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

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

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

<script>

test(function() {

  assert_throws_js(

    TypeError,

    () => PopStateEvent(''),

    "Calling PopStateEvent constructor without 'new' must throw"

);

}, "PopStateEvent constructor called as normal function");

test(function () {

  assert_false('initPopStateEvent' in PopStateEvent.prototype,

               'There should be no PopStateEvent#initPopStateEvent');

}, 'initPopStateEvent');

test(function () {

  var popStateEvent = new PopStateEvent("popstate");

  assert_equals(popStateEvent.state, null, "the PopStateEvent.state");

}, "Initial value of PopStateEvent.state must be null");

test(function () {

  var popStateEvent = new PopStateEvent("popstate");

  assert_false(popStateEvent.hasUAVisualTransition, "the PopStateEvent.hasUAVisualTransition");

}, "Initial value of PopStateEvent.hasUAVisualTransition must be false");

test(function () {

  var state = history.state;

  var data;

  var hasUAVisualTransition = false;

  window.addEventListener('popstate', function (e) {

    data = e.state;

    hasUAVisualTransition = e.hasUAVisualTransition;

});

  window.dispatchEvent(new PopStateEvent('popstate', {

    'state': {testdata:true},

    'hasUAVisualTransition': true

  }));

  assert_true(data.testdata,'state data was corrupted');

  assert_equals(history.state, state, "history.state was NOT set by dispatching the event");

  assert_true(hasUAVisualTransition, 'hasUAVisualTransition not set correctly');

}, 'Dispatching a synthetic PopStateEvent');

</script>