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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-19 00:47:55 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-19 00:47:55 +0000 |
commit | 26a029d407be480d791972afb5975cf62c9360a6 (patch) | |
tree | f435a8308119effd964b339f76abb83a57c29483 /testing/web-platform/tests/html/semantics/embedded-content/the-img-element/image-loading-lazy-base-url.html | |
parent | Initial commit. (diff) | |
download | firefox-26a029d407be480d791972afb5975cf62c9360a6.tar.xz firefox-26a029d407be480d791972afb5975cf62c9360a6.zip |
Adding upstream version 124.0.1.upstream/124.0.1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'testing/web-platform/tests/html/semantics/embedded-content/the-img-element/image-loading-lazy-base-url.html')
-rw-r--r-- | testing/web-platform/tests/html/semantics/embedded-content/the-img-element/image-loading-lazy-base-url.html | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/testing/web-platform/tests/html/semantics/embedded-content/the-img-element/image-loading-lazy-base-url.html b/testing/web-platform/tests/html/semantics/embedded-content/the-img-element/image-loading-lazy-base-url.html new file mode 100644 index 0000000000..01ce961d0f --- /dev/null +++ b/testing/web-platform/tests/html/semantics/embedded-content/the-img-element/image-loading-lazy-base-url.html @@ -0,0 +1,51 @@ +<!DOCTYPE html> +<head> + <title>Deferred images with loading='lazy' use the original + base URL specified at 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="../resources/common.js"></script> + <base href='/html/semantics/embedded-content/the-img-element/resources/'> +</head> + +<script> + const below_viewport_img = new ElementLoadPromise("below-viewport"); + + let has_window_loaded = false; + + async_test(t => { + // At this point, the below-viewport image's request has been set-up, and + // its URL is the URL that was parsed relative to the document's base URL + // at this time. Any changes to the document's base URL from this point + // forward should not impact the image when we scroll it in-view. This is + // because the next step in the #updating-the-img-data algorithm is to to + // fetch the request that has already been set up. Now we'll change the + // document's base URL, and scroll the image in-view. + window.addEventListener("load", t.step_func(() => { + const base = document.querySelector('base'); + base.href = '/invalid-url-where-no-subresources-exist/'; + has_window_loaded = true; + below_viewport_img.element().scrollIntoView(); + })); + + below_viewport_img.promise.then(t.step_func_done(() => { + assert_true(has_window_loaded, + "Below-viewport loading=lazy images do not block the " + + "window load event"); + })); + + below_viewport_img.promise.catch( + t.unreached_func("The image request should not load relative to the " + + "current (incorrect) base URL.") + ); + }, "When a loading=lazy image is loaded, it loads relative to the " + + "document's base URL computed at parse-time."); +</script> + +<body> + <div style="height:1000vh"></div> + <img id="below-viewport" src="image.png?base-url" loading="lazy" + onload="below_viewport_img.resolve()" + onerror="below_viewport_img.reject()"> +</body> |