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Diffstat (limited to '')
| -rw-r--r-- | testing/web-platform/tests/element-timing/observe-background-image.html | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/testing/web-platform/tests/element-timing/observe-background-image.html b/testing/web-platform/tests/element-timing/observe-background-image.html new file mode 100644 index 0000000000..6a43401cd0 --- /dev/null +++ b/testing/web-platform/tests/element-timing/observe-background-image.html @@ -0,0 +1,37 @@ +<!DOCTYPE HTML> +<meta charset=utf-8> +<title>Element Timing: observe element with background image</title> +<body> +<style> +body { + margin: 0; +} +#target { + width: 100px; + height: 50px; + background-image: url('/images/black-rectangle.png'); +} +</style> +<script src="/resources/testharness.js"></script> +<script src="/resources/testharnessreport.js"></script> +<script src="resources/element-timing-helpers.js"></script> +<script> + let beforeRender = performance.now(); + 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 + '/images/black-rectangle.png'; + checkElement(entry, pathname, 'my_div', 'target', beforeRender, + document.getElementById('target')); + checkRect(entry, [0, 100, 0, 50]); + checkNaturalSize(entry, 100, 50); + }) + ); + observer.observe({entryTypes: ['element']}); + }, 'Element with elementtiming attribute and background image is observable.'); +</script> +<div id='target' elementtiming='my_div'></div> +</body> |