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'use strict';
const common = require('../common');
const assert = require('assert');
const child_process = require('child_process');
if (common.isWindows)
common.skip('fs.closeSync(n) does not close stdio on Windows');
function runTest(fd, streamName, testOutputStream, expectedName) {
const result = child_process.spawnSync(process.execPath, [
'--expose-internals',
'-e', `
require('internal/process/stdio').resetStdioForTesting();
fs.closeSync(${fd});
const ctorName = process.${streamName}.constructor.name;
process.${testOutputStream}.write(ctorName);
`]);
assert.strictEqual(result[testOutputStream].toString(), expectedName,
`stdout:\n${result.stdout}\nstderr:\n${result.stderr}\n` +
`while running test with fd = ${fd}`);
if (testOutputStream !== 'stderr')
assert.strictEqual(result.stderr.toString(), '');
}
runTest(0, 'stdin', 'stdout', 'Readable');
runTest(1, 'stdout', 'stderr', 'Writable');
runTest(2, 'stderr', 'stdout', 'Writable');