| <!DOCTYPE HTML> |
| <meta charset=utf-8> |
| <title>Largest Contentful Paint: contracted image bounded by display size.</title> |
| <style type="text/css"> |
| #image_id { |
| width: 50px; |
| height: 50px; |
| } |
| </style> |
| <body> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <script src="resources/largest-contentful-paint-helpers.js"></script> |
| <script> |
| async_test(function (t) { |
| assert_implements(window.LargestContentfulPaint, "LargestContentfulPaint is not implemented"); |
| const beforeLoad = performance.now(); |
| const observer = new PerformanceObserver( |
| t.step_func_done(function(entryList) { |
| assert_equals(entryList.getEntries().length, 1); |
| const entry = entryList.getEntries()[0]; |
| const url = window.location.origin + '/images/black-rectangle.png'; |
| // black-rectangle.png is 100 x 50. It occupies 50 x 50 so size will be bounded by the displayed size. |
| const size = 50 * 50; |
| checkImage(entry, url, 'image_id', size, beforeLoad); |
| }) |
| ); |
| observer.observe({type: 'largest-contentful-paint', buffered: true}); |
| }, 'Largest Contentful Paint: |size| attribute is bounded by display size.'); |
| </script> |
| <img src='/images/black-rectangle.png' id='image_id'/> |
| </body> |
