| <html> |
| <head> |
| <script src="../../resources/js-test.js"></script> |
| <script> |
| if (window.testRunner) |
| testRunner.dumpAsText(); |
| |
| var filter = { acceptNode: function(node) { return true; } }; |
| var iterator = document.createNodeIterator(document, NodeFilter.SHOW_ELEMENT, null); |
| var walker = document.createTreeWalker(document, NodeFilter.SHOW_ELEMENT, null); |
| |
| // test that garbage collecting a node iterator or a tree walker without a |
| // filter doesn't crash. |
| gc(); |
| |
| // test that iterator keeps its filter alive |
| iterator = document.createNodeIterator(document, NodeFilter.SHOW_ELEMENT, filter); |
| filter = null; |
| shouldBeUndefined("iterator.filter.foo"); |
| iterator.filter.foo = 42; |
| shouldBeEqualToNumber("iterator.filter.foo", 42); |
| gc(); |
| shouldBeEqualToNumber("iterator.filter.foo", 42); |
| |
| // test that walker keeps its filter alive |
| filter = { acceptNode: function(node) { return true; } }; |
| walker = document.createTreeWalker(document, NodeFilter.SHOW_ELEMENT, filter); |
| shouldBeUndefined("walker.filter.foo"); |
| filter = null; |
| walker.filter.foo = 42; |
| shouldBeEqualToNumber("walker.filter.foo", 42); |
| gc(); |
| shouldBeEqualToNumber("walker.filter.foo", 42); |
| |
| </script> |
| </head> |
| <body> |
| </body> |
| </html> |
