unload-main-frame-same-origin.window.js (1118B)
1 // META: title=Unload runs in main frame when navigating same-origin. 2 // META: script=/common/dispatcher/dispatcher.js 3 // META: script=/common/get-host-info.sub.js 4 // META: script=/common/utils.js 5 // META: script=/html/browsers/browsing-the-web/remote-context-helper/resources/remote-context-helper.js 6 7 promise_test(async t => { 8 const rcHelper = new RemoteContextHelper(); 9 10 const rc1 = await rcHelper.addWindow(); 11 12 t.add_cleanup(() => localStorage.removeItem('unload')); 13 14 // Initialize storage and add "unload" event handler. 15 await rc1.executeScript(() => { 16 localStorage.setItem('unload', 'not yet'); 17 addEventListener('unload', () => { 18 localStorage.setItem('unload', 'ran'); 19 }); 20 }); 21 22 // Navigate away. 23 const rc2 = await rc1.navigateToNew(); 24 25 // Navigate back. 26 await rc2.historyBack(); 27 28 // Test that the unload handler wrote to storage. 29 // Running it in the remote context after going back should ensure that the 30 // navigation (and therefore the unload handler) has completed. 31 assert_equals( 32 await rc1.executeScript(() => localStorage.getItem('unload')), 'ran'); 33 });