node/test/simple/test-fs-write-file-buffer.js

var common = require('../common');
var join = require('path').join;
var util = require('util');
var fs = require('fs');

var data = [
  '/9j/4AAQSkZJRgABAQAAAQABAAD/2wBDAAUDBAQEAwUEBAQFBQUGBwwIBwcH',
  'Bw8LCwkMEQ8SEhEPERETFhwXExQaFRERGCEYGh0dHx8fExciJCIeJBweHx7/',
  '2wBDAQUFBQcGBw4ICA4eFBEUHh4eHh4eHh4eHh4eHh4eHh4eHh4eHh4eHh4e',
  'Hh4eHh4eHh4eHh4eHh4eHh4eHh4eHh7/wAARCAAQABADASIAAhEBAxEB/8QA',
  'HwAAAQUBAQEBAQEAAAAAAAAAAAECAwQFBgcICQoL/8QAtRAAAgEDAwIEAwUF',
  'BAQAAAF9AQIDAAQRBRIhMUEGE1FhByJxFDKBkaEII0KxwRVS0fAkM2JyggkK',
  'FhcYGRolJicoKSo0NTY3ODk6Q0RFRkdISUpTVFVWV1hZWmNkZWZnaGlqc3R1',
  'dnd4eXqDhIWGh4iJipKTlJWWl5iZmqKjpKWmp6ipqrKztLW2t7i5usLDxMXG',
  'x8jJytLT1NXW19jZ2uHi4+Tl5ufo6erx8vP09fb3+Pn6/8QAHwEAAwEBAQEB',
  'AQEBAQAAAAAAAAECAwQFBgcICQoL/8QAtREAAgECBAQDBAcFBAQAAQJ3AAEC',
  'AxEEBSExBhJBUQdhcRMiMoEIFEKRobHBCSMzUvAVYnLRChYkNOEl8RcYGRom',
  'JygpKjU2Nzg5OkNERUZHSElKU1RVVldYWVpjZGVmZ2hpanN0dXZ3eHl6goOE',
  'hYaHiImKkpOUlZaXmJmaoqOkpaanqKmqsrO0tba3uLm6wsPExcbHyMnK0tPU',
  '1dbX2Nna4uPk5ebn6Onq8vP09fb3+Pn6/9oADAMBAAIRAxEAPwDhfBUFl/wk',
  'OmPqKJJZw3aiZFBw4z93jnkkc9u9dj8XLfSI/EBt7DTo7ea2Ox5YXVo5FC7g',
  'Tjq24nJPXNVtO0KATRvNHCIg3zoWJWQHqp+o4pun+EtJ0zxBq8mnLJa2d1L5',
  '0NvnKRjJBUE5PAx3NYxxUY0pRtvYHSc5Ka2X9d7H/9k='];

data = data.join('\n');

var buf = new Buffer(data, 'base64');
fs.writeFileSync(join(common.tmpDir, 'test.jpg'), buf);

util.log('Done!');