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<!doctype html>
<meta charset=utf-8>
<title>Changes to named properties of the window object</title>
<link rel="author" title="Ms2ger" href="ms2ger@gmail.com">
<link rel="author" title="Boris Zbarsky" href="bzbarsky@mit.edu">
<link rel="help" href="https://html.spec.whatwg.org/multipage/#window">
<link rel="help" href="https://html.spec.whatwg.org/multipage/#dom-window-nameditem">
<link rel="help" href="https://heycam.github.io/webidl/#named-properties-object">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<div id=log></div>
<iframe name="bar"></iframe>
<iframe name="baz"></iframe>
<iframe name="baz"></iframe>
<iframe name="constructor"></iframe>
<script>
function assert_data_propdesc(pd, Writable, Enumerable, Configurable) {
  assert_equals(typeof pd, "object");
  assert_equals(pd.writable, Writable);
  assert_equals(pd.enumerable, Enumerable);
  assert_equals(pd.configurable, Configurable);
}
test(function() {
  assert_true("bar" in window, "bar not in window");
  assert_equals(window["bar"],
                document.getElementsByTagName("iframe")[0].contentWindow);
}, "Static name");
test(function() {
  assert_true("bar" in Window.prototype, "bar in Window.prototype");
  assert_false(Window.prototype.hasOwnProperty("bar"), "Window.prototype.hasOwnProperty(\"bar\")");

  var gsp = Object.getPrototypeOf(Object.getPrototypeOf(window));
  assert_true("bar" in gsp, "bar in gsp");
  assert_true(gsp.hasOwnProperty("bar"), "gsp.hasOwnProperty(\"bar\")");
  assert_data_propdesc(Object.getOwnPropertyDescriptor(gsp, "bar"),
                       true, false, true);
}, "Static name on the prototype");
test(function() {
  assert_equals(window.constructor, Window);
  assert_false(window.hasOwnProperty("constructor"), "window.constructor should not be an own property.");

  var proto = Object.getPrototypeOf(window);
  assert_equals(proto.constructor, Window);
  assert_true("constructor" in proto, "constructor in proto");
  assert_data_propdesc(Object.getOwnPropertyDescriptor(proto, "constructor"),
                       true, false, true);

  var gsp = Object.getPrototypeOf(proto);
  assert_true("constructor" in gsp, "constructor in gsp");
  assert_false(gsp.hasOwnProperty("constructor"), "gsp.hasOwnProperty(\"constructor\")");
  assert_equals(Object.getOwnPropertyDescriptor(gsp, "constructor"), undefined);
}, "constructor");
test(function() {
  var gsp = Object.getPrototypeOf(Object.getPrototypeOf(window));
  var names = Object.getOwnPropertyNames(gsp);
  assert_equals(names.filter((name) => name == "baz").length, 1);

}, "duplicate property names")
var t = async_test("Dynamic name")
var t2 = async_test("Ghost name")
t.step(function() {
  var iframe = document.getElementsByTagName("iframe")[0];
  iframe.setAttribute("src", "data:text/html,<script>window.name='foo'<\/script>");
  iframe.onload = function() {
    t.step(function() {
      assert_true("foo" in window, "foo not in window");
      assert_equals(window["foo"], iframe.contentWindow);
    });
    t.done();
    t2.step(function() {
      assert_false("bar" in window, "bar still in window");
      assert_equals(window["bar"], undefined);
    });
    t2.done();
  };
});
</script>