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Test Info: Warnings

<!DOCTYPE html>
<title>Battery status API test</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/common/utils.js"></script>
<script src="resources/utils.js"></script>
<body>
<script>
promise_test(async () => {
const uuid = token();
const frame = attachFencedFrame(
generateURL(`resources/get_battery.html`, [uuid]));
const result = await nextValueFromServer(uuid);
assert_equals(result, "NotAllowedError",
"battery status API should cause exception");
}, 'battery status should not be read in the fenced frame.');
</script>
</body>