| <!DOCTYPE html> |
| <script src="../resources/testharness.js"></script> |
| <script src="../resources/testharnessreport.js"></script> |
| <body> |
| <script> |
| 'use strict'; |
| (() => { |
| |
| if (!window.internals) { |
| // Requires observeGC |
| return; |
| } |
| |
| promise_test((t) => { |
| var observation = null; |
| (() => { |
| let f = document.createElement('iframe'); |
| f.srcdoc = 'content'; |
| document.body.appendChild(f); |
| let w = f.contentWindow; |
| |
| var X = new Object; |
| X.a = [f, w, w.customElements, w.document]; |
| X.a.forEach((o) => o.x = X); |
| observation = internals.observeGC(X); |
| |
| f.remove(); |
| })(); |
| |
| return Promise.resolve() |
| .then(() => { |
| gc(); gc(); |
| assert_true(observation.wasCollected, |
| 'cyclic references between objects and DOM wrappers should ' + |
| 'not leak'); |
| }); |
| }, 'Sanity check ordinary objects are not leaking'); |
| |
| promise_test((t) => { |
| var observation = null; |
| (() => { |
| let f = document.createElement('iframe'); |
| f.srcdoc = 'content'; |
| document.body.appendChild(f); |
| let w = f.contentWindow; |
| |
| class X extends HTMLElement {} |
| X.a = [f, w, w.customElements, w.document]; |
| X.a.forEach((o) => o.x = X); |
| w.customElements.define('a-a', X); |
| observation = internals.observeGC(X); |
| |
| f.remove(); |
| })(); |
| |
| return Promise.resolve() |
| .then(() => { |
| gc(); gc(); |
| assert_true(observation.wasCollected, |
| 'defining a custom element should not leak its constructor'); |
| }); |
| }, 'Defining custom elements does not leak'); |
| |
| })(); |
| </script> |
