deno.land / std@0.166.0 / node / _tools / test / parallel / test-child-process-execsync-maxbuf.js

test-child-process-execsync-maxbuf.js
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// deno-fmt-ignore-file// deno-lint-ignore-file
// Copyright Joyent and Node contributors. All rights reserved. MIT license.// Taken from Node 18.8.0// This file is automatically generated by "node/_tools/setup.ts". Do not modify this file manually
// TODO(cjihrig): This should use Node's -e instead of Deno's eval CLI arg.
'use strict';require('../common');
// This test checks that the maxBuffer option for child_process.spawnSync()// works as expected.
const assert = require('assert');const { getSystemErrorName } = require('util');const { execSync } = require('child_process');const msgOut = 'this is stdout';const msgOutBuf = Buffer.from(`${msgOut}\n`);
const args = [ 'eval', `"console.log('${msgOut}')";`,];
// Verify that an error is returned if maxBuffer is surpassed.{ assert.throws(() => { execSync(`"${process.execPath}" ${args.join(' ')}`, { maxBuffer: 1 }); }, (e) => { assert.ok(e, 'maxBuffer should error'); assert.strictEqual(e.code, 'ENOBUFS'); assert.strictEqual(getSystemErrorName(e.errno), 'ENOBUFS'); // We can have buffers larger than maxBuffer because underneath we alloc 64k // that matches our read sizes. assert.deepStrictEqual(e.stdout, msgOutBuf); return true; });}
// Verify that a maxBuffer size of Infinity works.{ const ret = execSync( `"${process.execPath}" ${args.join(' ')}`, { maxBuffer: Infinity } );
assert.deepStrictEqual(ret, msgOutBuf);}
// Default maxBuffer size is 1024 * 1024.{ assert.throws(() => { execSync( `"${process.execPath}" eval "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; });}
// Default maxBuffer size is 1024 * 1024.{ const ret = execSync( `"${process.execPath}" eval "console.log('a'.repeat(1024 * 1024 - 1))"` );
assert.deepStrictEqual( ret.toString().trim(), 'a'.repeat(1024 * 1024 - 1) );}
std

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Tagged at
a year ago