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// Flags: --expose-internals --no-warnings
'use strict';
require('../common');
const { internalBinding } = require('internal/test/binding');
const { TTY, isTTY } = internalBinding('tty_wrap');
const strictEqual = require('assert').strictEqual;
strictEqual(isTTY(0), true, 'fd 0 is not a TTY');
const handle = new TTY(0);
handle.readStart();
handle.onread = () => {};
function isHandleActive(handle) {
return process._getActiveHandles().some((active) => active === handle);
}
strictEqual(isHandleActive(handle), true, 'TTY handle not initially active');
handle.unref();
strictEqual(isHandleActive(handle), false, 'TTY handle active after unref()');
handle.ref();
strictEqual(isHandleActive(handle), true, 'TTY handle inactive after ref()');
handle.unref();
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