third_party/WebKit/LayoutTests/fast/dom/html-options-collection-lifetime.html

   1 <!DOCTYPE html>
   2 <script src="../../resources/js-test.js"></script>
   3 <body>
   4 <script>
   5 description('Tests that HTMLOptionsCollection does not keep its owner node alive.');
   6
   7 var select = document.createElement("select");
   8 var option = document.createElement("option");
   9 select.appendChild(option);
  10 var options = select.options;
  11 var observeSelect = internals.observeGC(select);
  12 var observeOption = internals.observeGC(option);
  13 var observeOptions = internals.observeGC(options);
  14
  15 select = null;
  16 option = null;
  17 gc();
  18
  19 shouldBeTrue('observeSelect.wasCollected');
  20 shouldBeTrue('observeOption.wasCollected');
  21 shouldBeFalse('observeOptions.wasCollected');
  22 </script>
  23 </body>
  24 </html>