| <!DOCTYPE html> |
| <meta charset="utf-8"> |
| <title>Interface.prototype.constructor is defined on [[Set]] receiver</title> |
| <link rel="help" href="https://heycam.github.io/webidl/#interface-prototype-object"> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <script> |
| "use strict"; |
| |
| test(() => { |
| window.constructor = null; |
| assert_equals(Window.prototype.constructor, Window); |
| |
| location.constructor = false; |
| assert_equals(Location.prototype.constructor, Location); |
| |
| navigator.constructor = 1; |
| assert_equals(Navigator.prototype.constructor, Navigator); |
| |
| document.constructor = {}; |
| assert_equals(HTMLDocument.prototype.constructor, HTMLDocument); |
| |
| document.head.constructor = []; |
| assert_equals(HTMLHeadElement.prototype.constructor, HTMLHeadElement); |
| }, "Window, Location, Navigator, HTMLDocument, and HTMLHeadElement"); |
| |
| test(() => { |
| for (let key of Object.getOwnPropertyNames(window)) { |
| if (!/^[A-Z]/.test(key)) continue; |
| |
| let desc = Object.getOwnPropertyDescriptor(window, key); |
| if (!desc || desc.enumerable) continue; |
| let {value} = desc; |
| if (typeof value !== "function") continue; |
| let {prototype} = value; |
| if (!prototype) continue; |
| |
| let heir = Object.create(prototype); |
| let newConstructor = function() {}; |
| heir.constructor = newConstructor; |
| |
| assert_not_equals(prototype.constructor, newConstructor, key); |
| assert_own_property(heir, "constructor", key); |
| assert_equals(heir.constructor, newConstructor, key); |
| } |
| }, "All window.* constructors"); |
| </script> |
