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Test Info:
- This WPT test may be referenced by the following Test IDs:
- /resize-observer/observe-002.html - WPT Dashboard Interop Dashboard
<!doctype html>
<title>ResizeObserver test: multiple observation on same element trigger only one</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="./resources/resizeTestHelper.js"></script>
<body>
<div id="log"></div>
<script>
'use strict';
function test() {
let t = createAndAppendElement("div");
t.style.width = "100px";
let helper = new ResizeTestHelper(
"multiple observation on same element trigger only one",
[
{
setup: observer => {
observer.observe(t);
observer.observe(t);
t.style.width = "10px";
},
notify: entries => {
assert_equals(entries.length, 1, "1 pending notification");
}
}
]);
return helper.start(() => t.remove());
}
(async () => await test())();
</script>