prefetch-transfer-size-iframe.html (1464B)
1 <!DOCTYPE html> 2 <html> 3 4 <head> 5 <title>Navigation Timing Transfert Size of Prefetched Page</title> 6 <script src="/resources/testharness.js"></script> 7 <script src="/resources/testharnessreport.js"></script> 8 <script src="/common/utils.js"></script> 9 <script src="/common/dispatcher/dispatcher.js"></script> 10 </head> 11 12 <body> 13 <script> 14 function add_iframe(url) { 15 return new Promise(resolve => { 16 const frame = document.createElement('iframe'); 17 frame.src = url; 18 frame.addEventListener('load', () => { 19 resolve(frame); 20 }, { once: true }); 21 document.body.appendChild(frame); 22 }); 23 }; 24 25 promise_test(async t => { 26 // Add an iframe 27 let iframe_url = 'resources/iframe-prefetch-transfer-size.html'; 28 frame = await add_iframe(iframe_url) 29 30 // Prefetch a url as link element. 31 await frame.contentWindow.addLink(); 32 33 // navigate to the prefetched url. 34 await new Promise(resolve => { 35 frame.addEventListener('load', () => { 36 resolve(); 37 }, { once: true }); 38 frame.contentWindow.navigateToPrefetchedUrl(); 39 }); 40 41 // Verify navigation timing transfer size is 0.; 42 let transferSize = 43 frame.contentWindow.performance.getEntriesByType('navigation')[0].transferSize; 44 45 assert_equals(transferSize, 0); 46 47 }, "Navigation timing transfer size for a prefetched navigation should be 0."); 48 </script> 49 </body> 50 51 </html>