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'use strict'; const common = require('../common'); const assert = require('assert'); const { execFile } = require('child_process'); function checkFactory(streamName) { return common.mustCall((err) => { assert(err instanceof RangeError); assert.strictEqual(err.message, `${streamName} maxBuffer length exceeded`); assert.strictEqual(err.code, 'ERR_CHILD_PROCESS_STDIO_MAXBUFFER'); }); } // default value { execFile( process.execPath, ['-e', 'console.log("a".repeat(1024 * 1024))'], checkFactory('stdout') ); } // default value { execFile( process.execPath, ['-e', 'console.log("a".repeat(1024 * 1024 - 1))'], common.mustSucceed((stdout, stderr) => { assert.strictEqual(stdout.trim(), 'a'.repeat(1024 * 1024 - 1)); assert.strictEqual(stderr, ''); }) ); } { const options = { maxBuffer: Infinity }; execFile( process.execPath, ['-e', 'console.log("hello world");'], options, common.mustSucceed((stdout, stderr) => { assert.strictEqual(stdout.trim(), 'hello world'); assert.strictEqual(stderr, ''); }) ); } { execFile('echo', ['hello world'], { maxBuffer: 5 }, checkFactory('stdout')); } const unicode = '中文测试'; // length = 4, byte length = 12 { execFile( process.execPath, ['-e', `console.log('${unicode}');`], { maxBuffer: 10 }, checkFactory('stdout')); } { execFile( process.execPath, ['-e', `console.error('${unicode}');`], { maxBuffer: 10 }, checkFactory('stderr') ); } { const child = execFile( process.execPath, ['-e', `console.log('${unicode}');`], { encoding: null, maxBuffer: 10 }, checkFactory('stdout') ); child.stdout.setEncoding('utf-8'); } { const child = execFile( process.execPath, ['-e', `console.error('${unicode}');`], { encoding: null, maxBuffer: 10 }, checkFactory('stderr') ); child.stderr.setEncoding('utf-8'); }