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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-19 01:47:29 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-19 01:47:29 +0000 |
| commit | 0ebf5bdf043a27fd3dfb7f92e0cb63d88954c44d (patch) | |
| tree | a31f07c9bcca9d56ce61e9a1ffd30ef350d513aa /testing/web-platform/tests/element-timing/observe-elementtiming.html | |
| parent | Initial commit. (diff) | |
| download | firefox-esr-0ebf5bdf043a27fd3dfb7f92e0cb63d88954c44d.tar.xz firefox-esr-0ebf5bdf043a27fd3dfb7f92e0cb63d88954c44d.zip | |
Adding upstream version 115.8.0esr.upstream/115.8.0esr
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'testing/web-platform/tests/element-timing/observe-elementtiming.html')
| -rw-r--r-- | testing/web-platform/tests/element-timing/observe-elementtiming.html | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/testing/web-platform/tests/element-timing/observe-elementtiming.html b/testing/web-platform/tests/element-timing/observe-elementtiming.html new file mode 100644 index 0000000000..a204f0d677 --- /dev/null +++ b/testing/web-platform/tests/element-timing/observe-elementtiming.html @@ -0,0 +1,44 @@ +<!DOCTYPE HTML> +<meta charset=utf-8> +<title>Element Timing: observe elements with elementtiming attribute</title> +<body> +<style> +body { + margin: 0; +} +</style> +<script src="/resources/testharness.js"></script> +<script src="/resources/testharnessreport.js"></script> +<script src="resources/element-timing-helpers.js"></script> +<script> + let beforeRender; + let img; + async_test(function (t) { + assert_implements(window.PerformanceElementTiming, "PerformanceElementTiming is not implemented"); + const observer = new PerformanceObserver( + t.step_func_done(function(entryList) { + assert_equals(entryList.getEntries().length, 1); + const entry = entryList.getEntries()[0]; + const pathname = window.location.origin + '/element-timing/resources/square100.png'; + checkElement(entry, pathname, 'my_image', 'my_id', beforeRender, img); + // Assume viewport has size at least 100, so the element is fully visible. + checkRect(entry, [0, 100, 0, 100]); + checkNaturalSize(entry, 100, 100); + }) + ); + observer.observe({entryTypes: ['element']}); + // We add the image during onload to be sure that the observer is registered + // in time for it to observe the element timing. + window.onload = () => { + // Add image of width equal to 100 and height equal to 100. + img = document.createElement('img'); + img.src = 'resources/square100.png'; + img.setAttribute('elementtiming', 'my_image'); + img.setAttribute('id', 'my_id'); + document.body.appendChild(img); + beforeRender = performance.now(); + }; + }, 'Element with elementtiming attribute is observable.'); +</script> + +</body> |