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<!doctype html>
<meta charset=utf-8>
<title>Test recursive `Document.execCommand()` calls</title>
<script src=/resources/testharness.js></script>
<script src=/resources/testharnessreport.js></script>
<div contenteditable><br></div>
<script>
"use strict";
setup({explicit_done: true});
/**
* This test checks whether the browser allows or disallows recursive
* Document.execCommand() calls.
* https://github.com/w3c/editing/issues/200#issuecomment-578097441
*/
function runTests() {
test(function () {
let editor = document.querySelector("div[contenteditable]");
editor.focus();
let counter = 0;
editor.addEventListener("input", event => {
if (++counter < 10) {
let result = document.execCommand("insertText", false, `, ${counter}`);
assert_false(result,
'`execCommand("insertText") in the "input" event listener should return `false`');
}
});
document.execCommand("insertText", false, "0");
assert_equals(editor.textContent, "0",
'`execCommand("insertText") in the "input" event listener should do nothing');
}, "Recursive `Document.execCommand()` shouldn't be supported");
done();
}
window.addEventListener("load", runTests, {once: true});
</script>
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