third_party/WebKit/LayoutTests/fast/dom/Window/lookup-behavior.html

   1 <!DOCTYPE html>
   2 <title>Name look-up tests of Window interface</title>
   3 <!-- TODO(yukishiino): Change the name look-up behavior of Window and fix all these tests. -->
   4 <script src="../../../resources/testharness.js"></script>
   5 <script src="../../../resources/testharnessreport.js"></script>
   6 <div id="container"></div>
   7 <script>
   8 var global = this;
   9 var container = document.getElementById('container');
  10
  11 test(function() {
  12     var originalAlert = window.alert;
  13     var iframe = document.createElement('iframe');
  14     iframe.name = 'alert';
  15     container.appendChild(iframe);
  16     assert_equals(window.alert, originalAlert, "window.alert shouldn't be shadowed by named properties.");
  17 }, "Named access test.  Window's members should have priority over named properties.");
  18
  19 test(function() {
  20     // Window's prototype chain must be
  21     // window --> Window.prototype --> "WindowProperties" --> EventTarget.prototype
  22     assert_equals(window.__proto__, Window.prototype);
  23     assert_class_string(window.__proto__.__proto__, 'WindowProperties');
  24     assert_equals(window.__proto__.__proto__.__proto__, EventTarget.prototype);
  25 }, "WindowProperties object should exist.");
  26
  27 test(function() {
  28     var anchor = document.createElement('a');
  29     anchor.id = 'myAnchor';
  30     container.appendChild(anchor);
  31     assert_equals(window.myAnchor, anchor, "Named access should work when WindowProperties is available.");
  32     // Remove the WindowProperties object from the prototype chain.  This means,
  33     // 'window' no longer supports named access.
  34     Window.prototype.__proto__ = EventTarget.prototype;
  35     assert_equals(window.myAnchor, undefined, "Named access shouldn't work when WindowProperties is not available.");
  36 }, "WindowProperties object should provide named access.");
  37
  38 test(function() {
  39     assert_true(window.hasOwnProperty('onclick'), "Window's event handlers should be own properties.");
  40     assert_true(window.hasOwnProperty('alert'), "Window's methods should be own properties.");
  41 }, "Window's members should be own members.");
  42
  43 // This test needs to run in the global scope.
  44 assert_false(!!window.onclick, "window.onclick is not yet set.");
  45 var wasMyOnClickCalled = false;
  46 var myOnClick = function() { wasMyOnClickCalled = true; };
  47 var onclick = myOnClick;
  48 assert_equals(window.onclick, myOnClick, "var declaration should be ignored, and window.onclick should be updated.");
  49 window.dispatchEvent(new Event('click'));
  50 assert_true(wasMyOnClickCalled, "myOnClick should have been called.");
  51 </script>
  52 </html>