| Domenic Denicola | 306b7ef | 2020-04-07 14:19:16 | [diff] [blame] | 1 | <!DOCTYPE html> |
| 2 | <meta charset="utf-8"> |
| 3 | <title>Window extends EventTarget</title> |
| 4 | <link rel="help" href="https://github.com/jsdom/jsdom/issues/2830"> |
| 5 | <script src="/resources/testharness.js"></script> |
| 6 | <script src="/resources/testharnessreport.js"></script> |
| 7 | |
| 8 | <body> |
| 9 | <script> |
| 10 | "use strict"; |
| 11 | |
| 12 | test(() => { |
| 13 | |
| 14 | assert_equals(window.addEventListener, EventTarget.prototype.addEventListener); |
| 15 | assert_equals(window.removeEventListener, EventTarget.prototype.removeEventListener); |
| 16 | assert_equals(window.dispatchEvent, EventTarget.prototype.dispatchEvent); |
| 17 | |
| 18 | }, "EventTarget methods on Window instances are inherited from the EventTarget prototype"); |
| 19 | |
| 20 | test(() => { |
| 21 | |
| 22 | const kCustom = "custom-event"; |
| 23 | const customEvent = new CustomEvent(kCustom, { |
| 24 | bubbles: true |
| 25 | }); |
| 26 | |
| 27 | let target; |
| 28 | window.addEventListener.call(document.body, kCustom, function () { |
| 29 | target = this; |
| 30 | }); |
| 31 | |
| 32 | document.body.dispatchEvent(customEvent); |
| 33 | |
| 34 | assert_equals(target, document.body); |
| 35 | |
| 36 | }, "window.addEventListener respects custom `this`"); |
| 37 | |
| 38 | test(() => { |
| 39 | |
| 40 | const kCustom = "custom-event"; |
| 41 | const customEvent = new CustomEvent(kCustom, { |
| 42 | bubbles: true |
| 43 | }); |
| 44 | |
| 45 | let target; |
| 46 | window.addEventListener.call(null, kCustom, function () { |
| 47 | target = this; |
| 48 | }); |
| 49 | |
| 50 | document.body.dispatchEvent(customEvent); |
| 51 | |
| 52 | assert_equals(target, window); |
| 53 | |
| 54 | }, "window.addEventListener treats nullish `this` as `window`"); |
| 55 | </script> |
