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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-in-viewport-dynamic.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-in-viewport-dynamic.html')
-rw-r--r-- | testing/web-platform/tests/html/semantics/embedded-content/the-img-element/image-loading-lazy-in-viewport-dynamic.html | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/testing/web-platform/tests/html/semantics/embedded-content/the-img-element/image-loading-lazy-in-viewport-dynamic.html b/testing/web-platform/tests/html/semantics/embedded-content/the-img-element/image-loading-lazy-in-viewport-dynamic.html new file mode 100644 index 0000000000..39dd5dc1e9 --- /dev/null +++ b/testing/web-platform/tests/html/semantics/embedded-content/the-img-element/image-loading-lazy-in-viewport-dynamic.html @@ -0,0 +1,40 @@ +<!DOCTYPE html> +<head> + <title>In viewport images with loading='lazy' and changed to loading='eager' + do not block the window load event</title> + <link rel="author" title="Rob Buis" href="mailto:rbuis@igalia.com"> + <link rel="help" href="https://github.com/scott-little/lazyload"> + <script src="/resources/testharness.js"></script> + <script src="/resources/testharnessreport.js"></script> +</head> + +<script> + const t = async_test("Test that in viewport images with loading='lazy' and " + + "changed to loading='eager' do not block the window " + + "load event."); + + let has_in_viewport_loaded = false; + let has_window_loaded = false; + + const in_viewport_img_onload = t.step_func_done(function() { + assert_false(has_in_viewport_loaded, + "The in_viewport element should load only once."); + assert_true(has_window_loaded, + "The window load event should fire before in_viewport image loads."); + has_in_viewport_loaded = true; + }); + + window.addEventListener("load", t.step_func(function() { + assert_false(has_window_loaded, + "The window load event should only fire once."); + has_window_loaded = true; + })); +</script> + +<body> + <img id="in_viewport" src="resources/image.png?in-viewport-dynamic&pipe=trickle(d2)" + loading="lazy" onload="in_viewport_img_onload();"> + <script> + document.getElementById("in_viewport").loading = 'eager'; + </script> +</body> |