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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>
<div id="log"></div>
<input id="i0" tabindex=0 value="i0">
<div id="fallback">
<template data-mode="open">
<slot id="s0" name="s0">
<div id="x-foo">
<template data-mode="open">
<input id="a2" tabindex=3 value="a2">
<slot id="s1" name="s1" tabindex=2>
<slot id="s2" name="s2">
<input id="a1" slot="s2" value="a1">
</slot>
</slot>
<input id="a0" tabindex=1 value="a0">
</template>
</div>
</slot>
</template>
</div>
<script>
'use strict';
promise_test(async () => {
let fallback = document.getElementById('fallback');
convertTemplatesToShadowRootsWithin(fallback);
let elements = [
'i0',
'fallback/x-foo/a0',
'fallback/x-foo/a1',
'fallback/x-foo/a2'
];
await assert_focus_navigation_forward(elements);
elements.reverse();
await assert_focus_navigation_backward(elements);
}, 'Focus should cover assigned elements of an assigned slot, as well as elements that are directly assigned to a slot.');
</script>
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