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<!DOCTYPE html>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/resources/testdriver.js"></script>
<script src="/resources/testdriver-vendor.js"></script>
<script src="/resources/testdriver-actions.js"></script>
<script src="resources/shadow-dom.js"></script>
<script src="resources/focus-utils.js"></script>
<p>Tests for moving focus by pressing tab key across nodes in slot scope.<br>
<div id="b1" tabindex="0">outside</div>
<div id='host'>
<template data-mode='open'>
<slot></slot>
</template>
<slot>
<div id="1A" tabindex="0">single nested slot</div>
<div id="1B" tabindex="0">single nested slot</div>
</slot>
<slot>
<div id="1C" tabindex="0">single nested slot</div>
</slot>
<slot>
<slot>
<div id="2A" tabindex="0">double nested slot</div>
<div id="2B" tabindex="0">double nested slot</div>
</slot>
</slot>
<slot>
<div id="3A" tabindex="0">single nested slot</div>
<slot>
<div id="3B" tabindex="0">double nested slot</div>
<slot>
<div id="3C" tabindex="0">Triple nested slot</div>
<div id="3D" tabindex="0">Triple nested slot</div>
</slot>
<div id="3E" tabindex="0">double nested slot</div>
</slot>
<div id="3F" tabindex="0">single nested slot</div>
</slot>
</div>
<div id="b2" tabindex="0">outside</div>
<script>
'use strict';
promise_test(async () => {
convertTemplatesToShadowRootsWithin(host);
let elements = [
'b1',
'1A',
'1B',
'1C',
'2A',
'2B',
'3A',
'3B',
'3C',
'3D',
'3E',
'3F',
'b2',
];
await assert_focus_navigation_forward(elements);
elements.reverse();
await assert_focus_navigation_backward(elements);
}, 'Focus should cover assigned nodes of slot, especially for nested slots in slot scope.');
</script>
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