promise-rejection-event-constructor.html

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This WPT test may be referenced by the following Test IDs:
- /html/webappapis/scripting/processing-model-2/unhandled-promise-rejections/promise-rejection-event-constructor.html - WPT Dashboard Interop Dashboard

<!DOCTYPE html>

<meta charset="utf-8">

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

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

<link rel="help" href="https://html.spec.whatwg.org/#the-promiserejectionevent-interface">

<script>

'use strict';

test(function() {

  var p = new Promise(function(resolve, reject) {});

  assert_throws_js(TypeError,

                   function() {

                     PromiseRejectionEvent('', { promise: p });

},

                   "Calling PromiseRejectionEvent constructor without 'new' must throw");

  // No custom options are passed (besides required promise).

  assert_equals(new PromiseRejectionEvent('eventType', { promise: p }).bubbles, false);

  assert_equals(new PromiseRejectionEvent('eventType', { promise: p }).cancelable, false);

  assert_equals(new PromiseRejectionEvent('eventType', { promise: p }).promise, p);

  assert_equals(new PromiseRejectionEvent('eventType', { promise: p }).reason, undefined);

  // No promise is passed.

  assert_throws_js(TypeError,

                   function() {

                     new PromiseRejectionEvent('eventType', { bubbles: false });

},

                   'Cannot construct PromiseRejectionEventInit without promise');

  // bubbles is passed.

  assert_equals(new PromiseRejectionEvent('eventType', { bubbles: false, promise: p }).bubbles, false);

  assert_equals(new PromiseRejectionEvent('eventType', { bubbles: true, promise: p }).bubbles, true);

  // cancelable is passed.

  assert_equals(new PromiseRejectionEvent('eventType', { cancelable: false, promise: p }).cancelable, false);

  assert_equals(new PromiseRejectionEvent('eventType', { cancelable: true, promise: p }).cancelable, true);

  // reason is passed.

  var r = new Error();

  assert_equals(new PromiseRejectionEvent('eventType', { promise: p, reason: r }).reason, r);

  assert_equals(new PromiseRejectionEvent('eventType', { promise: p, reason: null }).reason, null);

  // All initializers are passed.

  assert_equals(new PromiseRejectionEvent('eventType', { bubbles: true, cancelable: true, promise: p, reason: r }).bubbles, true);

  assert_equals(new PromiseRejectionEvent('eventType', { bubbles: true, cancelable: true, promise: p, reason: r }).cancelable, true);

  assert_equals(new PromiseRejectionEvent('eventType', { bubbles: true, cancelable: true, promise: p, reason: r }).promise, p);

  assert_equals(new PromiseRejectionEvent('eventType', { bubbles: true, cancelable: true, promise: p, reason: r }).reason, r);

}, "This tests the constructor for the PromiseRejectionEvent DOM class.");

</script>