| <!DOCTYPE html> |
| <script src="../resources/testharness.js"></script> |
| <script src="../resources/testharnessreport.js"></script> |
| <script src="./resources/intersection-observer-test-utils.js"></script> |
| <script src="../resources/gc.js"></script> |
| |
| <div id="root"> |
| <div id="target"></div> |
| </div> |
| |
| <script> |
| async_test(function(t) { |
| // Initialize observer and remove root in an inner function to avoid |
| // references to rootDiv remaining live on this function's stack frame |
| // (http://crbug.com/595672/). |
| function initializeObserverThenRemoveRootDiv() { |
| let rootDiv = document.getElementById("root"); |
| let observer = new IntersectionObserver(c => {}, {root: rootDiv}); |
| rootDiv.parentNode.removeChild(rootDiv); |
| return observer; |
| } |
| |
| var target = document.getElementById("target"); |
| var observer = initializeObserverThenRemoveRootDiv(); |
| gc(); |
| |
| runTestCycle(step0, "IntersectionObserver.observe with deleted root."); |
| |
| function step0() { |
| runTestCycle(step1, "IntersectionObserver.unobserve with deleted root."); |
| observer.observe(target); |
| } |
| |
| function step1() { |
| runTestCycle(step2, "IntersectionObserver.disconnect with deleted root."); |
| observer.unobserve(target); |
| } |
| |
| function step2() { |
| runTestCycle(step3, "IntersectionObserver.takeRecords with deleted root."); |
| observer.disconnect(); |
| } |
| |
| function step3() { |
| observer.takeRecords(); |
| t.done(); |
| } |
| }); |
| </script> |
