| <!DOCTYPE html> |
| <title>Test that does not load a low quality resource when viewport is downsized</title> |
| <script src="../../../resources/testharness.js"></script> |
| <script src="../../../resources/testharnessreport.js"></script> |
| <iframe style="width: 120px;"></iframe> |
| <script> |
| async_test(function(t) { |
| var iframe = document.querySelector('iframe'); |
| var iframeDoc = iframe.contentWindow.document; |
| |
| document.body.offsetTop; |
| iframeDoc.body.innerHTML = '<img id="srcset" srcset="resources/blue_rect.jpg 90w, resources/image-set-4x.png 120w">'; |
| |
| img = iframeDoc.getElementById('srcset'); |
| |
| var first = true; |
| img.onload = t.step_func(function() { |
| assert_true(first); |
| first = false; |
| assert_equals(img.currentSrc.indexOf("blue_rect.jpg"), -1); |
| |
| iframe.style.width = '90px'; |
| requestAnimationFrame(function() { |
| requestAnimationFrame(function() { |
| setTimeout(t.step_func(function() { |
| assert_equals(img.currentSrc.indexOf("blue_rect.jpg"), -1); |
| t.done(); |
| }), 0); |
| }); |
| }); |
| }); |
| }); |
| </script> |
