third_party/WebKit/LayoutTests/fast/dom/custom/class-side-inheritance.html

   1 <!DOCTYPE html>
   2 <script src="../../../resources/testharness.js"></script>
   3 <script src="../../../resources/testharnessreport.js"></script>
   4 <body>
   5 <script>
   6 test(function () {
   7     "use strict";
   8
   9     class Foo extends HTMLDivElement {
  10         static staticFunction () { return "static function called"; }
  11     }
  12
  13     var customFoo = document.registerElement("custom-foo", {
  14         prototype: Foo.prototype,
  15     });
  16
  17     assert_equals(Object.getPrototypeOf(customFoo), Foo,
  18         'generated constructor prototype should be base element constructor');
  19
  20     assert_equals(customFoo.staticFunction(), "static function called",
  21         'static function should be called using inherited element');
  22
  23     assert_equals(Object.getPrototypeOf(customFoo).__proto__, HTMLDivElement,
  24         'prototype chain should have base constructor\'s prototype');
  25 }, 'should inherit from passed constructor');
  26 </script>