| <!doctype html> |
| <title>Avoid srcset image reloads when viewport resizes</title> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <script> |
| setup({single_test:true}); |
| const image_was_loaded = () => { |
| const iframe = document.getElementById("iframe"); |
| // Resize the iframe |
| iframe.width="400"; |
| // Wait 500 ms |
| step_timeout(() => { |
| // Check that the iframe only loaded a single resource |
| const entries = iframe.contentWindow.performance.getEntriesByType("resource"); |
| assert_equals(entries.length, 1); |
| done(); |
| }, 500); |
| } |
| </script> |
| <iframe id=iframe width="401" src="resources/resized.html" onload="image_was_loaded()"></iframe> |
