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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/largest-contentful-paint/observe-mathml.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/observe-mathml.html')
-rw-r--r-- | testing/web-platform/tests/largest-contentful-paint/observe-mathml.html | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/testing/web-platform/tests/largest-contentful-paint/observe-mathml.html b/testing/web-platform/tests/largest-contentful-paint/observe-mathml.html new file mode 100644 index 0000000000..f527f188c7 --- /dev/null +++ b/testing/web-platform/tests/largest-contentful-paint/observe-mathml.html @@ -0,0 +1,46 @@ +<!DOCTYPE HTML> +<meta charset=utf-8> +<title>Largest Contentful Paint: observe element rendered by MathML</title> +<body> +<script src="/resources/testharness.js"></script> +<script src="/resources/testharnessreport.js"></script> +<script src="resources/largest-contentful-paint-helpers.js"></script> +<style> +mathml { + font-size: 12px; +} +</style> +<script> + async_test(function (t) { + assert_implements(window.LargestContentfulPaint, "LargestContentfulPaint is not implemented"); + let beforeLoad; + const observer = new PerformanceObserver( + t.step_func_done(function(entryList) { + assert_equals(entryList.getEntries().length, 1); + const entry = entryList.getEntries()[0]; + assert_equals(entry.entryType, 'largest-contentful-paint'); + assert_greater_than_equal(entry.renderTime, beforeRender); + assert_approx_equals(entry.startTime, entry.renderTime, 0.001, + 'startTime should be equal to renderTime to the precision of 1 millisecond.'); + assert_equals(entry.duration, 0); + // Some lower bound: height of at least 12 px. + // Width of at least 100 px. + assert_greater_than(entry.size, 1200); + assert_equals(entry.loadTime, 0); + assert_equals(entry.id, 'mathml'); + assert_equals(entry.url, ''); + assert_equals(entry.element, document.getElementById('mathml')); + }) + ); + observer.observe({type: 'largest-contentful-paint', buffered: true}); + beforeRender = performance.now(); + }, 'Element rendered by MathML is observable'); +</script> +<math display="block"> + <mrow> + <msup> + <mi id="mathml">This is important text! :)</mi> + </msup> + </mrow> +</math> +</body> |