| <!DOCTYPE html> |
| <head> |
| <title>Below-viewport loading=lazy not-rendered images should never load, |
| even when scrolled into view</title> |
| <link rel="author" title="Rob Buis" href="mailto:rbuis@igalia.com"> |
| <link rel="author" title="Dom Farolino" href="mailto:dom@chromium.org"> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <script src="../resources/common.js"></script> |
| </head> |
| |
| <body> |
| <!-- These images must not attempt to load when scrolled into the |
| viewport --> |
| <img id="display_none" style="display:none;" src="resources/image.png?2" loading="lazy" |
| onload="display_none_img.resolve();" onerror="display_none_img.reject();"> |
| <img id="attribute_hidden" hidden src="resources/image.png?3" loading="lazy" |
| onload="attribute_hidden_img.resolve();" onerror="attribute_hidden_img.reject();"> |
| <img id="js_display_none" src="resources/image.png?4" loading="lazy" |
| onload="js_display_none_img.resolve();" onerror="js_display_none_img.reject();"> |
| <script> |
| document.getElementById("js_display_none").style = 'display:none;'; |
| </script> |
| |
| <!-- Later in the test we'll scroll to this div, instead of the above images, |
| since due to them not being rendered, they cannot be scrolled to --> |
| <div id="rendered_div"></div> |
| </body> |
| |
| <script> |
| const display_none_img = new ElementLoadPromise("display_none"); |
| const attribute_hidden_img = new ElementLoadPromise("attribute_hidden"); |
| const js_display_none_img = new ElementLoadPromise("js_display_none"); |
| const rendered_div_element = document.querySelector('#rendered_div'); |
| |
| async_test(t => { |
| window.addEventListener("load", t.step_func(() => { |
| rendered_div.scrollIntoView(); |
| })); |
| |
| const unreached_not_rendered_img_func = |
| t.unreached_func("The not-rendered below-viewport loading=lazy images " + |
| "should not attempt to load."); |
| |
| display_none_img.promise |
| .then(unreached_not_rendered_img_func) |
| .catch(unreached_not_rendered_img_func); |
| |
| attribute_hidden_img.promise |
| .then(unreached_not_rendered_img_func) |
| .catch(unreached_not_rendered_img_func); |
| |
| js_display_none_img.promise |
| .then(unreached_not_rendered_img_func) |
| .catch(unreached_not_rendered_img_func); |
| |
| // If none of the above images load after being scrolled to within the below |
| // timeout, the test passes. |
| t.step_timeout(t.done, 2000); |
| }, "Below-viewport loading=lazy not-rendered images should never load, " + |
| "even when scrolled into view"); |
| </script> |
| |
