| <!DOCTYPE html> |
| <html> |
| <body> |
| <p>This tests that JS wrappers of rects in an IntersectionObserverEntry do not get collected.</p> |
| <pre id="log"></pre> |
| <script src="../resources/gc.js"></script> |
| <script> |
| |
| if (window.testRunner) |
| testRunner.dumpAsText(); |
| |
| const targetCount = 5; |
| const iterationCount = 5; |
| |
| for (let i = 0; i < targetCount; ++i) { |
| let target = document.createElement('div'); |
| document.body.appendChild(target); |
| } |
| |
| async function observe() { |
| return new Promise((resolve) => { |
| const observer = new IntersectionObserver(entries => { |
| for (const entry of entries) { |
| entry.rootBounds.myState = 'live'; |
| entry.boundingClientRect.myState = 'live'; |
| entry.intersectionRect.myState = 'live'; |
| } |
| resolve(entries); |
| observer.disconnect(); |
| }); |
| document.querySelectorAll('div').forEach(target => { observer.observe(target); }); |
| }); |
| } |
| |
| function check(entries) { |
| let deadCount = 0; |
| for (const entry of entries) { |
| if (entry.rootBounds.myState != 'live') |
| deadCount++; |
| if (entry.boundingClientRect.myState != 'live') |
| deadCount++; |
| if (entry.intersectionRect.myState != 'live') |
| deadCount++; |
| } |
| document.getElementById('log').textContent += (deadCount ? `FAIL - ${deadCount} rects lost JS wrappers` : 'PASS') + '\n'; |
| } |
| |
| async function runAll() { |
| if (window.testRunner) |
| testRunner.waitUntilDone(); |
| |
| for (let j = 0; j < iterationCount; ++j) { |
| const entries = await observe(); |
| await Promise.resolve(); |
| gc(); |
| check(entries); |
| } |
| |
| if (window.testRunner) |
| testRunner.notifyDone(); |
| } |
| |
| runAll(); |
| |
| </script> |
| </body> |
| </html> |
