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| Current File : //proc/self/root/home/ubuntu/node-v16.18.1/test/parallel/test-child-process-execfilesync-maxbuf.js |
'use strict';
require('../common');
// This test checks that the maxBuffer option for child_process.execFileSync()
// works as expected.
const assert = require('assert');
const { getSystemErrorName } = require('util');
const { execFileSync } = require('child_process');
const msgOut = 'this is stdout';
const msgOutBuf = Buffer.from(`${msgOut}\n`);
const args = [
'-e',
`console.log("${msgOut}");`,
];
// Verify that an error is returned if maxBuffer is surpassed.
{
assert.throws(() => {
execFileSync(process.execPath, args, { maxBuffer: 1 });
}, (e) => {
assert.ok(e, 'maxBuffer should error');
assert.strictEqual(e.code, 'ENOBUFS');
assert.strictEqual(getSystemErrorName(e.errno), 'ENOBUFS');
// We can have buffers larger than maxBuffer because underneath we alloc 64k
// that matches our read sizes.
assert.deepStrictEqual(e.stdout, msgOutBuf);
return true;
});
}
// Verify that a maxBuffer size of Infinity works.
{
const ret = execFileSync(process.execPath, args, { maxBuffer: Infinity });
assert.deepStrictEqual(ret, msgOutBuf);
}
// Default maxBuffer size is 1024 * 1024.
{
assert.throws(() => {
execFileSync(
process.execPath,
['-e', "console.log('a'.repeat(1024 * 1024))"]
);
}, (e) => {
assert.ok(e, 'maxBuffer should error');
assert.strictEqual(e.code, 'ENOBUFS');
assert.strictEqual(getSystemErrorName(e.errno), 'ENOBUFS');
return true;
});
}
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