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Test Info:

<!DOCTYPE html>
<title>HTMLCollection (table.rows) liveness after moving rows</title>
<meta charset="utf-8">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<!-- Regression test for https://github.com/jsdom/jsdom/issues/742 -->
<table id="testTable">
<tbody>
<tr><td>Cell 1</td></tr>
<tr><td>Cell 2</td></tr>
</tbody>
</table>
<script>
"use strict";
test(() => {
const table = document.getElementById("testTable");
const tbody = table.tBodies[0];
const { rows } = table;
assert_equals(rows[0].cells[0].textContent, "Cell 1");
const row1 = rows[0];
tbody.removeChild(row1);
tbody.appendChild(row1);
assert_equals(rows[0].cells[0].textContent, "Cell 2");
const len = rows.length;
assert_equals(len, 2);
assert_equals(rows[0].cells[0].textContent, "Cell 2");
}, "table.rows should reflect row moves immediately");
</script>