third_party/WebKit/LayoutTests/fast/dom/MutationObserver/mutation-observer-constructor.html

   1 <!DOCTYPE html>
   2 <body>
   3 <script src="../../../resources/js-test.js"></script>
   4 <script>
   5 description('Test the constructor of WebKitMutationObserver');
   6
   7 shouldBeNonNull('window.WebKitMutationObserver');
   8 shouldBeEqualToString('typeof WebKitMutationObserver.prototype.observe', 'function');
   9 shouldBeEqualToString('typeof WebKitMutationObserver.prototype.disconnect', 'function');
  10 window.observer = new MutationObserver(function(mutations) { });
  11 shouldBeEqualToString('typeof observer.observe', 'function');
  12 shouldBeEqualToString('typeof observer.disconnect', 'function');
  13
  14 shouldThrow('new MutationObserver({ handleEvent: function() {} })');
  15 shouldThrow('new MutationObserver({})');
  16 shouldThrow('new MutationObserver(42)');
  17 shouldThrow('new MutationObserver("foo")');
  18 </script>
  19 </body>