| <!DOCTYPE html> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <script src="/preload/resources/preload_helper.js"></script> |
| <script> |
| var t = async_test('Makes sure that a dynamically added preload with imagesrcset works'); |
| </script> |
| <body> |
| <script> |
| t.step(function() { |
| verifyPreloadAndRTSupport(); |
| var expectation = new Array(4).fill(0); |
| if (window.devicePixelRatio < 1.5) { |
| expectation[2] = 1; |
| } else if (window.devicePixelRatio >= 1.5) { |
| expectation[3] = 1; |
| } |
| var link = document.createElement("link"); |
| link.as = "image"; |
| link.rel = "preload"; |
| link.href = "resources/square.png?default"; |
| link.imageSrcset = "resources/square.png?200 200w, resources/square.png?400 400w, resources/square.png?800 800w"; |
| link.imageSizes = "400px"; |
| link.onload = t.step_func(function() { |
| t.step_timeout(function() { |
| verifyNumberOfResourceTimingEntries("resources/square.png?default", expectation[0]); |
| verifyNumberOfResourceTimingEntries("resources/square.png?200", expectation[1]); |
| verifyNumberOfResourceTimingEntries("resources/square.png?400", expectation[2]); |
| verifyNumberOfResourceTimingEntries("resources/square.png?800", expectation[3]); |
| t.done(); |
| }, 0); |
| }); |
| document.body.appendChild(link); |
| }); |
| </script> |
| </body> |
