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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/element-timing/buffer-before-onload.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/element-timing/buffer-before-onload.html')
| -rw-r--r-- | testing/web-platform/tests/element-timing/buffer-before-onload.html | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/testing/web-platform/tests/element-timing/buffer-before-onload.html b/testing/web-platform/tests/element-timing/buffer-before-onload.html new file mode 100644 index 0000000000..17c8238f6e --- /dev/null +++ b/testing/web-platform/tests/element-timing/buffer-before-onload.html @@ -0,0 +1,44 @@ +<!DOCTYPE html> +<html> +<meta charset=utf-8 /> +<title>Element Timing: buffer elements before onload</title> +<script src=/resources/testharness.js></script> +<script src=/resources/testharnessreport.js></script> +<script src="resources/element-timing-helpers.js"></script> +<body> +<img src=resources/slow-image.py?name=square20.png&sleep=500> +<script> + /* + In this test, a slow image is added to the frame to delay onload. The entry + is available from the observer with the buffered flag set to true. + */ + async_test(function(t) { + assert_implements(window.PerformanceElementTiming, "PerformanceElementTiming is not implemented"); + beforeRender = performance.now(); + const img = document.createElement('img'); + img.src = 'resources/square20.jpg'; + img.setAttribute('elementtiming', 'my_image'); + img.setAttribute('id', 'my_id'); + document.body.appendChild(img); + + // this PerformanceObserver should be notified about the previously + // buffered element entry + new PerformanceObserver(t.step_func((entryList, observer) => { + assert_equals(entryList.getEntries().length, 1); + entryList.getEntries().forEach(entry => { + assert_equals(entry.entryType, "element"); + const pathname = window.location.origin + '/element-timing/resources/square20.jpg'; + checkElement(entry, pathname, 'my_image', 'my_id', beforeRender, img); + checkNaturalSize(entry, 20, 20); + observer.disconnect(); + t.done(); + }); + })).observe({ + type: "element", + buffered: true + }); + }, "Element Timing: image loads before onload available from buffered flag."); + +</script> +</body> +</html> |