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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 09:22:09 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 09:22:09 +0000 |
| commit | 43a97878ce14b72f0981164f87f2e35e14151312 (patch) | |
| tree | 620249daf56c0258faa40cbdcf9cfba06de2a846 /testing/web-platform/tests/largest-contentful-paint/loadTime-after-appendChild.html | |
| parent | Initial commit. (diff) | |
| download | firefox-upstream.tar.xz firefox-upstream.zip | |
Adding upstream version 110.0.1.upstream/110.0.1upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'testing/web-platform/tests/largest-contentful-paint/loadTime-after-appendChild.html')
| -rw-r--r-- | testing/web-platform/tests/largest-contentful-paint/loadTime-after-appendChild.html | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/testing/web-platform/tests/largest-contentful-paint/loadTime-after-appendChild.html b/testing/web-platform/tests/largest-contentful-paint/loadTime-after-appendChild.html new file mode 100644 index 0000000000..2d19e73e60 --- /dev/null +++ b/testing/web-platform/tests/largest-contentful-paint/loadTime-after-appendChild.html @@ -0,0 +1,33 @@ +<!DOCTYPE HTML> +<meta charset=utf-8> +<title>Largest Contentful Paint: delayed appended image.</title> +<body> +<script src="/resources/testharness.js"></script> +<script src="/resources/testharnessreport.js"></script> +<script src="resources/largest-contentful-paint-helpers.js"></script> +<script> + async_test(function (t) { + assert_implements(window.LargestContentfulPaint, "LargestContentfulPaint is not implemented"); + let beforeLoad; + const observer = new PerformanceObserver( + t.step_func_done(entryList => { + assert_equals(entryList.getEntries().length, 1); + const entry = entryList.getEntries()[0]; + const url = window.location.origin + '/images/black-rectangle.png'; + // blue.png is 100 by 50. + const size = 100 * 50; + checkImage(entry, url, 'image_id', size, beforeLoad); + }) + ); + observer.observe({type: 'largest-contentful-paint', buffered: true}); + const img = document.createElement('img'); + img.src = '/images/black-rectangle.png'; + img.id = 'image_id'; + t.step_timeout(() => { + beforeLoad = performance.now(); + document.getElementById('image_div').appendChild(img); + }, 200) + }, 'Image loadTime occurs after appendChild is called.'); +</script> +<div id='image_div'></div> +</body> |