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Test Info:
- This WPT test may be referenced by the following Test IDs:
- /css/cssom/getComputedStyle-display-none-003.html - WPT Dashboard Interop Dashboard
<!doctype html>
<title>style is invalidated properly as a result of attribute changes in display: none subtrees</title>
<link rel="author" title="Emilio Cobos Álvarez" href="mailto:emilio@crisal.io">
<script src=/resources/testharness.js></script>
<script src=/resources/testharnessreport.js></script>
<style>
div {
color: red
}
.foo {
color: lime;
}
</style>
<div style="display: none">
<div id="undisplayed"></div>
</div>
<script>
test(function() {
let undisplayed_style = getComputedStyle(undisplayed);
assert_equals(undisplayed_style.color, "rgb(255, 0, 0)");
undisplayed.classList.add("foo");
assert_equals(undisplayed_style.color, "rgb(0, 255, 0)");
}, "getComputedStyle gets invalidated in display: none subtrees due to attribute mutations");
</script>