capabilities:
{
    'browserName': 'chrome',
    chromeOptions: {
     args: ['--headless','window-size=1366,768'],
        prefs: {
            'download': {
                'prompt_for_download': false,
                'directory_upgrade': true,
             'default_directory': process.cwd()+'/Commons/downloads/'
            }
        }
    }
},

var workbook = XLSX.readFile(process.cwd()+'/Commons/downloads/test.xls');