| <?php |
| header("ACCEPT-CH: DPR, Width, Viewport-Width, Device-Memory"); |
| ?> |
| <!DOCTYPE html> |
| <script src="../resources/testharness.js"></script> |
| <script src="../resources/testharnessreport.js"></script> |
| <body> |
| <script> |
| var t = async_test('Client-Hints sent when Accept-CH header is present'); |
| var unreached = function() { |
| assert_unreached("Image should have loaded."); |
| }; |
| |
| var loadDeviceMemoryImage = function() { |
| var img = new Image(); |
| img.src = 'resources/image-checks-for-device-memory.php'; |
| img.onload = t.step_func(function(){ t.done(); }); |
| img.onerror = t.step_func(unreached); |
| document.body.appendChild(img); |
| }; |
| var loadRWImage = function() { |
| var img = new Image(); |
| img.src = 'resources/image-checks-for-width.php'; |
| img.sizes = '500'; |
| img.onload = t.step_func(loadDeviceMemoryImage); |
| img.onerror = t.step_func(unreached); |
| document.body.appendChild(img); |
| }; |
| var loadViewportImage = function() { |
| var img = new Image(); |
| img.src = 'resources/image-checks-for-viewport-width.php'; |
| img.onload = t.step_func(loadRWImage); |
| img.onerror = t.step_func(unreached); |
| document.body.appendChild(img); |
| }; |
| t.step(function() { |
| var img = new Image(); |
| img.src = 'resources/image-checks-for-dpr.php'; |
| img.onload = t.step_func(loadViewportImage); |
| img.onerror = t.step_func(unreached); |
| document.body.appendChild(img); |
| }); |
| </script> |
| </body> |
