diff options
author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 17:32:43 +0000 |
---|---|---|
committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 17:32:43 +0000 |
commit | 6bf0a5cb5034a7e684dcc3500e841785237ce2dd (patch) | |
tree | a68f146d7fa01f0134297619fbe7e33db084e0aa /testing/web-platform/tests/largest-contentful-paint/repeated-image.html | |
parent | Initial commit. (diff) | |
download | thunderbird-6bf0a5cb5034a7e684dcc3500e841785237ce2dd.tar.xz thunderbird-6bf0a5cb5034a7e684dcc3500e841785237ce2dd.zip |
Adding upstream version 1:115.7.0.upstream/1%115.7.0upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'testing/web-platform/tests/largest-contentful-paint/repeated-image.html')
-rw-r--r-- | testing/web-platform/tests/largest-contentful-paint/repeated-image.html | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/testing/web-platform/tests/largest-contentful-paint/repeated-image.html b/testing/web-platform/tests/largest-contentful-paint/repeated-image.html new file mode 100644 index 0000000000..c69cc5b615 --- /dev/null +++ b/testing/web-platform/tests/largest-contentful-paint/repeated-image.html @@ -0,0 +1,48 @@ +<!DOCTYPE HTML> +<meta charset=utf-8> +<title>Largest Contentful Paint: repeated image.</title> +<style> + #image_id { + width: 10px; + height: 10px; + } +</style> +<body> +<script src="/resources/testharness.js"></script> +<script src="/resources/testharnessreport.js"></script> +<script src="resources/largest-contentful-paint-helpers.js"></script> +<script> + setup({"hide_test_state": true}); + async_test(function (t) { + assert_implements(window.LargestContentfulPaint, "LargestContentfulPaint is not implemented"); + let beforeLoad = performance.now(); + let firstCallback = true; + const url = window.location.origin + '/images/black-rectangle.png'; + const observer = new PerformanceObserver( + t.step_func(entryList => { + assert_equals(entryList.getEntries().length, 1); + const entry = entryList.getEntries()[0]; + + // First image is shrunk to be 10 x 10. The second image is added at its natural size: 100 x 50. + const size = firstCallback ? 10 * 10 : 100 * 50; + const id = firstCallback ? 'image_id' : 'second_id'; + checkImage(entry, url, id, size, beforeLoad); + if (firstCallback) { + const img = document.createElement('img'); + img.src = '/images/black-rectangle.png'; + img.id = 'second_id'; + beforeLoad = performance.now(); + document.getElementById('image_div').appendChild(img); + firstCallback = false; + return; + } else { + t.done(); + } + }) + ); + observer.observe({type: 'largest-contentful-paint', buffered: true}); + }, 'Repeated image produces different timestamps.'); +</script> +<img src='/images/black-rectangle.png' id='image_id'/> +<div id='image_div'></div> +</body> |