open-and-add-load-event.js (889B)
1 function open_and_add_load_event(href) { 2 return new Promise((resolve) => { 3 // While not practically possible, opening "blank" first and setting the 4 // href after allows for the theoretical possibility of registering the event 5 // after the window is loaded. 6 let popup_window = window.open("/resources/blank.html"); 7 assert_not_equals(popup_window, null, "Popup windows not allowed?"); 8 popup_window.addEventListener('load', resolve, {once: true}); 9 popup_window.location.href = href; 10 }); 11 } 12 13 async function open_and_expect_headers(href) { 14 let e = await new Promise(resolve => { 15 let popup_window = window.open("/resources/blank.html"); 16 assert_not_equals(popup_window, null, "Popup windows not allowed?"); 17 window.addEventListener('message', resolve, false); 18 popup_window.location.href = href; 19 }); 20 21 assert_equals(e.data, "PASS"); 22 return e; 23 }