| <!DOCTYPE html> |
| <script src="../../../resources/js-test.js"></script> |
| <script> |
| description('Test that WebKitMutationObserver.disconnect cancels pending delivery'); |
| |
| window.jsTestIsAsync = true; |
| var mutations; |
| var observer; |
| |
| function start() { |
| mutations = null; |
| div = document.createElement('div'); |
| |
| observer = new MutationObserver(function(m) { |
| mutations = m; |
| }); |
| |
| observer.observe(div, { attributes: true }); |
| div.setAttribute('foo', 'bar'); |
| observer.disconnect(); |
| setTimeout(next, 0); |
| } |
| |
| function next() { |
| debug('Disconnecting should cancel any pending delivery...'); |
| shouldBeNull('mutations'); |
| observer.observe(div, { attributes: true }); |
| div.setAttribute('bar', 'baz'); |
| setTimeout(finish, 0); |
| } |
| |
| function finish() { |
| debug('...and re-observing should not see any of the previously-generated records.'); |
| shouldBe('mutations.length', '1'); |
| shouldBe('mutations[0].attributeName', '"bar"'); |
| finishJSTest(); |
| } |
| |
| start(); |
| </script> |
