| <!DOCTYPE html> |
| <head> |
| <title>Deferred loading=lazy iframes load relative to the document's base URL |
| at parse-time</title> |
| <link rel="author" title="Dom Farolino" href="mailto:dom@chromium.org"> |
| <link rel="author" title="Raj T" href="mailto:rajendrant@chromium.org"> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <script src="../resources/common.js"></script> |
| </head> |
| |
| <script> |
| const below_viewport_iframe = new ElementLoadPromise("below-viewport"); |
| |
| let has_window_loaded = false; |
| |
| async_test(t => { |
| // Change the document's base URL to a bogus one, and scroll the |
| // below-viewport iframe into view. When it loads, it should load relative |
| // to the old base URL computed at parse-time. |
| window.addEventListener("load", t.step_func(() => { |
| window.history.pushState(2, document.title, |
| '/invalid-url-where-no-subresources-exist/') |
| has_window_loaded = true; |
| below_viewport_iframe.element().scrollIntoView(); |
| })); |
| |
| below_viewport_iframe.promise.then(t.step_func_done(() => { |
| assert_true(has_window_loaded, |
| "Below-viewport loading=lazy iframes do not block the " + |
| "window load event"); |
| assert_true(below_viewport_iframe.element() |
| .contentDocument.body.innerHTML.includes("<p>Subframe</p>")); |
| })); |
| |
| }, "When a loading=lazy iframe is loaded, it loads relative to the " + |
| "document's base URL computed at parse-time."); |
| </script> |
| |
| <body> |
| <div style="height:1000vh;"></div> |
| <script> |
| // Change the document's base URL so that the iframe request parses relative |
| // to it when it sets up the request at parse-time. |
| window.history.pushState(1, document.title, 'resources/') |
| </script> |
| <iframe id="below-viewport" src="subframe.html" loading="lazy" width="200px" |
| height="100px" onload="below_viewport_iframe.resolve()"</iframe> |
| </body> |
