third_party/WebKit/LayoutTests/fast/dom/lenient-this.html

   1 <!DOCTYPE html>
   2 <title>[LenientThis] test</title>
   3 <script src="../../resources/testharness.js"></script>
   4 <script src="../../resources/testharnessreport.js"></script>
   5 <script>
   6 test(function() {
   7     // GlobalEventHandlers.onmouseenter is [LenientThis].
   8     assert_equals(document.onmouseenter, null, "|this| is an appropriate object.");
   9     assert_equals(Document.prototype.onmouseenter, undefined, "|this| is not an appropriate object.");
  10     Document.prototype.onmouseenter = 'foo'; // must not throw.
  11     assert_equals(Document.prototype.onmouseenter, undefined, "the value must not change.");
  12
  13     // GlobalEventHandlers.onmousedown is NOT [LenientThis].
  14     assert_equals(document.onmousedown, null, "|this| is an appropriate object.");
  15     assert_throws(null, function() {
  16         Document.prototype.onmousedown;
  17     }, "Document.prototype is invalid as |this|.");
  18     assert_throws(null, function() {
  19         Document.prototype.onmousedown = 'foo';
  20     }, "Document.prototype is invalid as |this|.");
  21 });
  22 </script>