温斯顿测井仪在量角器中的试验失败

Question

背景：，我使用Jasmine2作为我的Protractor测试框架，并尝试在框架中实现一个记录器机制，使用winston进行更好的日志记录。

问题：测试失败，在cmd中出现以下非零错误，在脚本中包含之前它运行良好。你能帮我正确地实施它吗？

非零错误：

Report destination:   target\e2e\screenshots\my-report.html
[20:28:52] I/launcher - Running 1 instances of WebDriver
[20:28:52] I/hosted - Using the selenium server at http://127.0.0.1:4444/wd/hub

[20:28:56] I/launcher - 0 instance(s) of WebDriver still running
[20:28:56] I/launcher - chrome #01 failed 1 test(s)
[20:28:56] I/launcher - overall: 1 failed spec(s)
[20:28:56] E/launcher - Process exited with error code 1

以下是供参考的相应文件：

Scenario_01.js:

describe('Scenario_01', function() {

 var Logging = require('./scripts/LoggingMech.js');
 var common = require('./scripts/CloseBrowsers.js');    
 var Login = require('./scripts/Login.js'); 


 it('Login', function() {
         browser.waitForAngularEnabled(false); 
         Login.login('admin','Adminpwd')
          .catch(error => Logging.Logger.log(error));
     });

afterAll(function(){
    common.closeBrowsers();
});
});

Login.js:

var Login = function() {

     this.login = async function(username, passwordKey){
     await browser.get('http://testwebsite.com/showCust');
     await element(by.name('USER')).sendKeys(username);
     await element(by.name('PASSWORD')).sendKeys(passwordKey);
     await element(by.xpath('/html/body/table/tbody/tr[2]/td/table/tbody/tr/td/table/tbody/tr[3]/td/form/input[9]')).click();
     await element(by.name('YES')).click();
     //browser.sleep(10000);

};
}
module.exports = new Login();

LoggingMech.js

const winston = require('winston');
var Logging = function() {

     this.Logger = function(){
      const logger = winston.createLogger({

           level: 'info',
           format: format.simple(),
            transports: [
                new winston.transports.Console(),
                new winston.transports.File({ filename: 'TodaysLog.log' })
                        ]
});

};
}
module.exports = new Logging();

Answer 1

问题

const logger = winston.createLogger...，您正在创建一个温斯顿引用，但它从未在任何地方传递。你只是把它储存在一个常数里。您必须使其成为Logger属性的属性，然后创建Logging.Logger的新实例并在其上调用log()。

修复

您必须使它成为Logger属性的属性。

在LoggingMech.js中，您要做this.logger = winston.createLogger而不是const logger = winston.createLogger

然后创建一个Logging.Logger的新实例并在其上调用log()。

var Logging = require('./scripts/LoggingMech.js');
// logs foo
(new Logging.Logger()).log('foo');

但我认为你正在做的更复杂，因为它是必要的。为了实现记录器，只需将LoggingMech.js文件更改为：

const winston = require('winston');
module.exports = winston.createLogger({
    level: 'info',
    format: format.simple(),
    transports: [
        new winston.transports.Console(),
        new winston.transports.File({
            filename: 'TodaysLog.log'
        })
    ]
});

并称之为：

var Logging = require('./scripts/LoggingMech.js');
Logging.log('foo');

记录器的配置仍然封装在LoggingMech.js中，调用方法更简单。代码也更易于维护。

更新1:与温斯顿进行日志记录

winston.log()方法只接受日志对象，而不接受字符串。

// logs "I am a log message."
winston.log({
  level: 'info',
  message: 'I am a log message.'
}

对于普通字符串，可以使用logger.info()。

更新2:完整的温斯顿日志记录示例

一个工作日志示例。下面的代码在我的机器上适用于我：

winston.js

var winston = require('winston');
module.exports = winston.createLogger({
    level: 'info',
    transports: [
        new winston.transports.Console(),
        new winston.transports.File({
            filename: 'TodaysLog.log'
        })
    ]
});

index.js

var Logging = require('./winston');
var message = {
    level: 'info',
    message: 'Hello distributed log files!'
  };

  Logging.log(message);
  Logging.info('sdf');
  Logging.error(message);
  Logging.warn(message);

记录在TodaysLog.log中的内容

{"level":"info","message":"Hello distributed log files!"}
{"message":"sdf","level":"info"}
{"level":"error","message":"Hello distributed log files!"}
{"level":"warn","message":"Hello distributed log files!"}

Answer 2

@sylvanBregy:下面是建议修改的文件，以供参考。

我可以亲眼目睹测试成功地完成登录，但不确定为什么控制台中会触发错误。

而且，logFile中也没有写任何东西:(

Scenario_01

describe('Scenario_01', function() {
console.log("Into Scenario1");

 var Logging = require('./scripts/LoggingMech.js');
 var common = require('./scripts/CloseBrowsers.js');    
 var Login = require('./scripts/Login.js'); 


 it('Login', function() {
         browser.waitForAngularEnabled(false); 
         Login.login('admin','Adminpwd')
           Logging.info("foo"); //Neither this worked nor the below
           Logging.info();
     });

afterAll(function(){
    common.closeBrowsers();
});
});

Login.js

var Login = function() {
  console.log("Into Login Function");

     this.login = async function(username, passwordKey){
     await browser.get('http://testwebsite.com/showCust');
     await element(by.name('USER')).sendKeys(username);
     await element(by.name('PASSWORD')).sendKeys(passwordKey);
     await element(by.xpath('/html/body/table/tbody/tr[2]/td/table/tbody/tr/td/table/tbody/tr[3]/td/form/input[9]')).click();
     await element(by.name('YES')).click();
     //browser.sleep(10000);

};
}
module.exports = new Login();

LoggingMech.js

const winston = require('C:\\Program Files\\nodejs\\node_modules\\npm\\node_modules\\winston\\lib\\winston');
//const winston = require('winston');

module.exports = winston.createLogger({
                     level: 'info',
                     format: 'simple',
                     transports: [
                            new winston.transports.Console(),
                            new winston.transports.File({filename:'./logs/TodaysLog.log',level: 'info'})
                            ],
});

控制台日志

Report destination:   target\e2e\screenshots\my-report.html
[20:22:58] I/launcher - Running 1 instances of WebDriver
[20:22:58] I/hosted - Using the selenium server at http://127.0.0.1:4444/wd/hub
Into Scenario1
Into Login Function

[20:23:03] I/launcher - 0 instance(s) of WebDriver still running
[20:23:03] I/launcher - chrome #01 failed 1 test(s)
[20:23:03] I/launcher - overall: 1 failed spec(s)
[20:23:03] E/launcher - Process exited with error code 1