| <!DOCTYPE html> |
| <head> |
| <title>Deferred iframes with loading='lazy' use the original |
| base URL specified at the parse time</title> |
| <link rel="author" title="Rob Buis" href="mailto:rbuis@igalia.com"> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <script src="common.js"></script> |
| <base href='/html/semantics/embedded-content/the-img-element/resources/'> |
| </head> |
| |
| <script> |
| const below_viewport_iframe_promise = new ElementLoadPromise("below_viewport_iframe"); |
| |
| let has_window_loaded = false; |
| |
| async_test(function(t) { |
| |
| // Change the base URL and scroll down to load the deferred elements. |
| window.addEventListener("load", t.step_func(function() { |
| const base = document.getElementsByTagName('base')[0]; |
| base.href = '/invalid-url-where-no-subresources-exist/'; |
| has_window_loaded = true; |
| below_viewport_iframe_promise.element().scrollIntoView(); |
| })); |
| |
| below_viewport_iframe_promise.promise.then( |
| t.step_func_done(function() { |
| assert_true(has_window_loaded, |
| "Below-viewport loading=lazy iframes do not block the " + |
| "window load event"); |
| assert_true(below_viewport_iframe_promise.element().contentDocument.body. |
| innerHTML.includes("<p>Subframe</p>"), |
| "The loading=lazy iframe's content is accessible upon loading"); |
| }) |
| ).catch(t.unreached_func("The iframe request should not load relative to " + |
| "the current (incorrect) base URL.")); |
| }, "Deferred iframes with loading='lazy' use the original base URL " + |
| "specified at the parse time"); |
| </script> |
| |
| <body> |
| <div style="height:1000vh"></div> |
| <iframe id="below_viewport_iframe" src="subframe.html" loading="lazy" |
| width="200px" height="100px" onload="below_viewport_iframe_promise.resolve();" |
| onerror="below_viewport_iframe_promise.reject();"> |
| </iframe> |
| </body> |
