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Test Info:

<!DOCTYPE html>
<meta charset="utf-8">
<title>CSS Test: ::before matches when originating element has :focus-visible selector</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/resources/testdriver.js"></script>
<script src="/resources/testdriver-actions.js"></script>
<script src="/resources/testdriver-vendor.js"></script>
<style>
input {
outline: none;
&:not(:disabled):focus-visible::before {
background-color: green;
}
}
input::before {
content: "";
background-color: red;
display: inline-block;
height: 50px;
width: 50px;
}
</style>
<input type="checkbox" id="target"/>
<script>
promise_test(async t => {
const kTab = '\uE004';
await new test_driver.Actions()
.keyDown(kTab)
.keyUp(kTab)
.send();
assert_equals(getComputedStyle(target, "::before").backgroundColor, "rgb(0, 128, 0)");
});
</script>