| // META: script=resources/document-open-side-effects.js |
| |
| for (const ev of ["unload", "beforeunload", "pagehide"]) { |
| async_test(t => { |
| const iframe = document.body.appendChild(document.createElement("iframe")); |
| t.add_cleanup(() => iframe.remove()); |
| iframe.src = "/common/blank.html"; |
| iframe.onload = t.step_func(() => { |
| iframe.contentWindow.addEventListener(ev, t.step_func(() => { |
| // Here, the entry settings object could still be the iframe's. Delay |
| // it in such a way that ensures the entry settings object is the |
| // top-level page's, but without delaying too much that the |
| // ignore-opens-during-unload counter becomes decremented. A microtask |
| // is perfect as it's executed immediately in "clean up after running |
| // script". |
| Promise.resolve().then(t.step_func_done(() => { |
| const origURL = iframe.contentDocument.URL; |
| assertDocumentIsReadyForSideEffectsTest(iframe.contentDocument, `ignore-opens-during-unload counter is greater than 0 during ${ev} event`); |
| assert_equals(iframe.contentDocument.open(), iframe.contentDocument); |
| assertOpenHasNoSideEffects(iframe.contentDocument, origURL, `ignore-opens-during-unload counter is greater than 0 during ${ev} event`); |
| })); |
| })); |
| iframe.src = "about:blank"; |
| }); |
| }, `document.open bailout should not have any side effects (ignore-opens-during-unload is greater than 0 during ${ev} event)`); |
| } |
