| <!DOCTYPE html> |
| <title>Target element of ElementsInternals is held strongly and doesn't get GCed if there are no other references</title> |
| <body> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <script src="/common/gc.js"></script> |
| |
| <script> |
| customElements.define("x-foo", class extends HTMLElement {}); |
| |
| promise_test(async t => { |
| const elementInternals = []; |
| |
| for (let i = 0; i < 1e5; i++) { |
| const targetElement = document.createElement("x-foo"); |
| targetElement.attachShadow({ mode: "open" }); |
| elementInternals.push(targetElement.attachInternals()); |
| } |
| |
| await garbageCollect(); |
| await new Promise(r => t.step_timeout(r, 100)); |
| |
| const allShadowRootsAreAlive = elementInternals.every(eI => eI.shadowRoot instanceof ShadowRoot); |
| assert_true(allShadowRootsAreAlive); |
| }); |
| </script> |
