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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-19 00:47:55 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-19 00:47:55 +0000 |
| commit | 26a029d407be480d791972afb5975cf62c9360a6 (patch) | |
| tree | f435a8308119effd964b339f76abb83a57c29483 /testing/web-platform/tests/largest-contentful-paint/image-removed-before-load.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/largest-contentful-paint/image-removed-before-load.html')
| -rw-r--r-- | testing/web-platform/tests/largest-contentful-paint/image-removed-before-load.html | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/testing/web-platform/tests/largest-contentful-paint/image-removed-before-load.html b/testing/web-platform/tests/largest-contentful-paint/image-removed-before-load.html new file mode 100644 index 0000000000..08e5ee56db --- /dev/null +++ b/testing/web-platform/tests/largest-contentful-paint/image-removed-before-load.html @@ -0,0 +1,42 @@ +<!DOCTYPE HTML> +<meta charset=utf-8> +<title>Largest Contentful Paint: largest image is reported.</title> +<body> +<script src="/resources/testharness.js"></script> +<script src="/resources/testharnessreport.js"></script> +<script src="resources/largest-contentful-paint-helpers.js"></script> +<img id="target"/> +<img id="target2"/> +<script> + setup({"hide_test_state": true}); + const numInitial = 100; + const sleep = 1000; + const small_img_src = '/images/lcp-16x16.png'; + let beforeLoad; + async_test(function (t) { + assert_implements(window.LargestContentfulPaint, "LargestContentfulPaint is not implemented"); + const img_src = '/element-timing/resources/progressive-image.py?name=square20.jpg&numInitial=' + + numInitial + '&sleep=' + sleep; + const img1 = document.getElementById('target') + img1.src = img_src; + // After a brief wait, remove the image and add a smaller image to target2. + t.step_timeout(() => { + img1.parentNode.removeChild(img1); + document.getElementById('target2').src = small_img_src; + beforeLoad = performance.now(); + }, 0); + new PerformanceObserver( + t.step_func(entryList => { + let images = entryList.getEntries().filter(e => e.id !== ''); + if (!images.length) + return; + assert_equals(images.length, 1, 'Should only receive one entry'); + const entry = images[0]; + checkImage(images[0], window.location.origin + small_img_src, 'target2', 16 * 16, + beforeLoad); + t.done(); + }) + ).observe({type: 'largest-contentful-paint', buffered: true}); + }, 'Largest Contentful Paint: image removed before loaded does not produce entry.'); +</script> +</body> |