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Diffstat (limited to '')
| -rw-r--r-- | testing/web-platform/tests/largest-contentful-paint/observe-svg-background-image.html | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/testing/web-platform/tests/largest-contentful-paint/observe-svg-background-image.html b/testing/web-platform/tests/largest-contentful-paint/observe-svg-background-image.html new file mode 100644 index 0000000000..bc0b399a18 --- /dev/null +++ b/testing/web-platform/tests/largest-contentful-paint/observe-svg-background-image.html @@ -0,0 +1,39 @@ +<!DOCTYPE HTML> +<meta charset=utf-8> +<title>Largest Contentful Paint: observe image.</title> +<style> + #target { + background-image: url('/images/green.svg'); + width: 100px; + height: 50px; + } +</style> +<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"); + const beforeLoad = performance.now(); + const observer = new PerformanceObserver( + t.step_func_done(function(entryList) { + assert_equals(entryList.getEntries().length, 1); + const entry = entryList.getEntries()[0]; + let url = window.location.origin + '/images/green.svg'; + // green.svg is 100 by 50 + const size = 100 * 50; + checkImage(entry, url, 'target', size, beforeLoad); + }) + ); + observer.observe({type: 'largest-contentful-paint', buffered: true}); + t.step_timeout(() => { + assert_unreached("The image should have triggered an LCP entry."); + t.done(); + }, 1000); + }, 'Same-origin SVG background image is observable.'); +</script> + +<div id="target" width="100" height="50"></div> +</body> + |