third_party/WebKit/LayoutTests/fast/dom/custom/document-register-constructor.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     var proto = Object.create(HTMLElement.prototype);
   8     var ctor = document.registerElement('x-a', {prototype: proto});
   9     assert_true(ctor instanceof Function, 'constructor must be a function');
  10     assert_equals(typeof ctor, 'function', 'constructor must be a function instance');
  11 }, 'constructor type');
  12
  13 test(function () {
  14     var proto = Object.create(HTMLElement.prototype);
  15     var ctor = document.registerElement('x-b', {prototype: proto});
  16
  17     // FIXME: These are not specified yet. Update these assertions
  18     // when the name is specified.
  19     assert_equals(ctor.name, 'x-b', 'the constructor\'s name should match the type');
  20 }, 'constructor name');
  21
  22 test(function () {
  23     var proto = Object.create(HTMLElement.prototype);
  24     var ctor = document.registerElement('x-c', {prototype: proto});
  25     assert_own_property(proto, 'constructor', 'document.register must configure the constructor property of the prototype');
  26
  27     assert_equals(proto.constructor, ctor, 'the value of the constructor property must be the constructor function');
  28
  29     var desc = Object.getOwnPropertyDescriptor(proto, 'constructor');
  30     assert_true(desc.writable, 'constructor property must be writable');
  31     assert_false(desc.enumerable, 'constructor property must be non-enumerable');
  32     assert_true(desc.configurable, 'constructor property must be configurable');
  33 }, 'prototype "constructor" property');
  34
  35 test(function () {
  36     var proto = Object.create(HTMLElement.prototype);
  37     var ctor = document.registerElement('x-d', {prototype: proto});
  38     assert_own_property(ctor, 'prototype', 'document.register must configure the prototype property of the constructor');
  39
  40     assert_equals(ctor.prototype, proto, 'the value of the prototype property must be the prototype object');
  41
  42     var desc = Object.getOwnPropertyDescriptor(ctor, 'prototype');
  43     assert_false(desc.writable, 'prototype property must not be writable');
  44     assert_false(desc.enumerable, 'prototype property must be non-enumerable');
  45     assert_false(desc.configurable, 'prototype property must not be configurable');
  46 }, 'constructor "prototype" property');
  47 </script>
  48