| <!DOCTYPE html> |
| |
| <!-- rAF throttling also is tested in fast/dom, but this test accounts for |
| out-of-process iframes which are only created in http tests. --> |
| <script src="../resources/testharness.js"></script> |
| <script src="../resources/testharnessreport.js"></script> |
| <style> |
| #frame { |
| position: absolute; |
| top: -1000px; |
| } |
| </style> |
| |
| <iframe id="frame" sandbox="allow-scripts" src="http://localhost:8000/dom/resources/raf-throttling-frame.html"></iframe> |
| |
| <script> |
| if (window.testRunner) |
| testRunner.dumpAsText(); |
| let throttlingTest = async_test("Test requestAnimationFrame() throttling in out-of-view cross origin frames"); |
| |
| var frame = document.querySelector('#frame'); |
| var state = 0; |
| var firstRafCount = 0; |
| |
| frame.onload = () => { |
| // Check how many animation frames have been served to the frame after it has |
| // been given time to load. |
| requestAnimationFrame(() => { |
| setTimeout(() => { |
| // By the time this runs, the frame should be in a steady state. |
| var frame = document.querySelector('#frame'); |
| frame.contentWindow.postMessage(null, '*'); |
| }, 0) |
| }); |
| }; |
| |
| window.addEventListener('message', (e) => { |
| if (state == 0) { |
| firstRafCount = e.data; |
| state = 1; |
| // We don't know how many frames will have been served before they became |
| // throttled, but the number shouldn't subsequently change. |
| requestAnimationFrame(() => { |
| setTimeout(() => { |
| var frame = document.querySelector('#frame'); |
| frame.contentWindow.postMessage(null, '*'); |
| }, 0) |
| }); |
| } else { |
| let rafCount = e.data; |
| assert_equals(rafCount, firstRafCount, "requestAnimationFrame() callback count") |
| throttlingTest.done(); |
| } |
| }); |
| </script> |
