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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-srcset.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-srcset.html')
-rw-r--r-- | testing/web-platform/tests/html/semantics/embedded-content/the-img-element/image-loading-lazy-srcset.html | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/testing/web-platform/tests/html/semantics/embedded-content/the-img-element/image-loading-lazy-srcset.html b/testing/web-platform/tests/html/semantics/embedded-content/the-img-element/image-loading-lazy-srcset.html new file mode 100644 index 0000000000..953d4af4ef --- /dev/null +++ b/testing/web-platform/tests/html/semantics/embedded-content/the-img-element/image-loading-lazy-srcset.html @@ -0,0 +1,38 @@ +<!DOCTYPE html> +<head> +<title>loading='lazy' image with srcset</title> +<link rel="help" href="https://html.spec.whatwg.org/multipage/images.html#update-the-image-data"> +<link rel="help" href="https://html.spec.whatwg.org/multipage/images.html#will-lazy-load-image-steps"> +<script src="/resources/testharness.js"></script> +<script src="/resources/testharnessreport.js"></script> +</head> +<div style="height:1000vh;"></div> +<img srcset="resources/image.png?loading-lazy-srcset" loading="lazy"> +<img loading="lazy" srcset="resources/image.png?loading-lazy-srcset"> +<script> +promise_test(async t => { + let loaded_images = 0; + const imgs = document.querySelectorAll("img"); + imgs.forEach(img => { + img.addEventListener("load", () => { loaded_images++; }, { once: true }); + }); + + await new Promise(resolve => window.addEventListener("load", resolve)); + + assert_equals(loaded_images, 0, + "lazy-load images with srcset shouldn't be loaded yet"); + + const promises = [ + new Promise(resolve => imgs[0].addEventListener("load", resolve)), + new Promise(resolve => imgs[1].addEventListener("load", resolve)), + ]; + + imgs[1].scrollIntoView(); + await Promise.all(promises); + + imgs.forEach(img => { + assert_true(img.complete, + "Now the lazy-load image with srcset should be loaded"); + }); +}); +</script> |