正在量角器测试用例中从电子邮件中获取值

这是我最近解决的问题。希望该解决方案也适用于您的用例。

先决条件：

• mail-listener2包
• 对promises概念的理解

分步说明：

1. 安装mail-listener2:

   npm install mail-listener2 --save-dev
   

2. 在量角器配置中初始化邮件侦听器并使其全局可用：

   onPrepare: function () {
       var MailListener = require("mail-listener2");
       // here goes your email connection configuration
       var mailListener = new MailListener({
           username: "imap-username",
           password: "imap-password",
           host: "imap-host",
           port: 993, // imap port 
           tls: true,
           tlsOptions: { rejectUnauthorized: false },
           mailbox: "INBOX", // mailbox to monitor 
           searchFilter: ["UNSEEN", "FLAGGED"], // the search filter being used after an IDLE notification has been retrieved 
           markSeen: true, // all fetched email willbe marked as seen and not fetched next time 
           fetchUnreadOnStart: true, // use it only if you want to get all unread email on lib start. Default is `false`, 
           mailParserOptions: {streamAttachments: true}, // options to be passed to mailParser lib. 
           attachments: true, // download attachments as they are encountered to the project directory 
           attachmentOptions: { directory: "attachments/" } // specify a download directory for attachments 
       });
       mailListener.start();
       mailListener.on("server:connected", function(){
           console.log("Mail listener initialized");
       });
       global.mailListener = mailListener;
   }),
   onCleanUp: function () {
       mailListener.stop();
   }, 
   

3. 创建一个助手getLastEmail()函数，等待检索email：

   function getLastEmail() {
       var deferred = protractor.promise.defer();
       console.log("Waiting for an email...");
       mailListener.on("mail", function(mail){
           deferred.fulfill(mail);
       });
       return deferred.promise;
   };
   

4. 示例测试用例：

   describe("Sample test case", function () {
       beforeEach(function () {
           browser.get("/#login");
           browser.waitForAngular();
       });
       it("should login with a registration code sent to an email", function () {
           element(by.id("username")).sendKeys("MyUserName");
           element(by.id("password")).sendKeys("MyPassword");
           element(by.id("loginButton")).click();
           browser.controlFlow().await(getLastEmail()).then(function (email) {
               expect(email.subject).toEqual("New Registration Code");
               expect(email.headers.to).toEqual("myemail@email.com");
               // extract registration code from the email message
               var pattern = /Registration code is: ('w+)/g;
               var regCode = pattern.exec(email.text)[1];
               console.log(regCode);
            });
       });
   });
   

我实现的解决方案是使用mailcatcher API，如果你向下滚动一点，你会发现以下关于API的信息：

一个相当RESTful的URL模式意味着您可以下载一个消息列表在来自/messages的JSON中，每个消息的元数据/messages/：id.json，然后使用/messages/：id.html和/messages/：id.plain用于默认html和纯文本版本，/messages/：id/：cid用于单个附件CID，或带有/messages/：id.source.的整个消息

因此，我们首先获取整个json响应，对其进行解析，并获取最新的电子邮件id:

// Returns the last email id
function(emails, user) {
    var email, recipient;
    for(var i = emails.length - 1; i >= 0; i--) {
        email = emails[i];
        for(var j = 0; j < email.recipients.length ; j++) {
            recipient = email.recipients[j];
            if(recipient == "<"+user+">") {
                return email.id;
            }
        }
    }
};

使用该电子邮件id，我们可以通过点击/messages/:id.plain来获取电子邮件的正文（当然还有更多的变体，比如获取电子邮件源代码或电子邮件呈现的html，我们只需要消息），然后我们可以解析正文来获取我们想要的内容，下面是代码：

browser.driver.get(mailcatcherUrl+"/messages");
browser.driver.findElement(by.tagName('body')).getText().then(function(response) {
    var emails, lastEmailId, partialTokens ;
    emails = JSON.parse(response);
    lastEmailId = getLastEmailId(emails, user);
    browser.driver.get(mailcatcherUrl+"/messages/"+lastEmailId+".plain");
    browser.driver.findElement(by.tagName('body')).getText().then(function(lastEmail) {
        // use latestEmail to get what you want.
    });
});

干杯！

我不得不做同样的事情，但我们使用的邮件测试服务器没有imap支持。因此，如果有人遇到同样的问题，我使用mailpop3npm库实现了与alecxe类似的解决方案。

然而，pop3客户端的问题是，它不充当侦听器，因此我们必须定义一个助手函数，当我们需要测试最新的电子邮件时，该函数将连接、登录并获取最新的邮件。

类似这样的东西：

function getLastEmail() {
  var deferred = protractor.promise.defer();
  var POP3Client = require("mailpop3");
  var client = new POP3Client(port, host, {
          tlserrs: false,
          enabletls: true,
          debug: false
      });
  client.on("connect", function() {
  
          console.log("CONNECT success");
          client.login(username, password);
  
  });
  client.on("login", function(status, rawdata) {
  
      if (status) {
  
          console.log("LOGIN/PASS success");
          client.retr(1);
  
      } else {
  
          console.log("LOGIN/PASS failed");
          client.quit();
  
      }
  });
  client.on("retr", function(status, msgnumber, data, rawdata) {
  
      if (status === true) {
  
          console.log("RETR success for msgnumber " + msgnumber);
          deferred.fulfill(data);
  
      } else {
  
          console.log("RETR failed for msgnumber " + msgnumber);
    
      }
      client.quit();
  });
  return deferred.promise;
}