在量角器测试用例中从电子邮件中获取值

Question

我需要测试量角器测试用例，其中用户注册、收到电子邮件、转到电子邮件中提供的 link 并在激活注册表中填写 his/her 详细信息。

问题是如何从电子邮件中获取兑换令牌。我的电子邮件有一个 link 到激活页面，该页面具有如下所示的身份验证令牌：

http://127.0.0.1:3000/#/signup/redeem/eyJ0eXAiOiJKV1QiLCJhbGciOiJIUzI1NiJ9.eyJqdGkiOiJlOTRhYzY3MC1kYTNlLTQyYTUtODVkZS02NDU4ZjVmZGMwYjAiLCJzdWIiOiJ0ZXN0QGNvZWYuY28iLCJpYXQiOjE0Mjc0OTM5MDMsImV4cCI6MTQyODA5ODcwM30.

但是我如何获取该令牌以便我可以构建 url 或者我如何单击我的电子邮件中的那个按钮以便我可以完成流程？我正在使用 mailcatcher 来模拟电子邮件。

Answer 1

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 package
理解promises

分步说明：

安装mail-listener2:
```
npm install mail-listener2 --save-dev
```

在你的量角器配置中初始化邮件监听器并使其在全球可用：

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();
},

创建一个辅助 getLastEmail() 函数，它将等待 email 被检索：

function getLastEmail() {
    var deferred = protractor.promise.defer();
    console.log("Waiting for an email...");

    mailListener.on("mail", function(mail){
        deferred.fulfill(mail);
    });
    return deferred.promise;
};

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);

         });
    });
});

Answer 2

我实施的解决方案是使用 mailcatcher API，如果您向下滚动一点，您会发现以下关于 API 的信息：

A fairly RESTful URL schema means you can download a list of messages in JSON from /messages, each message's metadata with /messages/:id.json, and then the pertinent parts with /messages/:id.html and /messages/:id.plain for the default HTML and plain text version, /messages/:id/:cid for individual attachments by CID, or the whole message with /messages/:id.source.

所以我们首先获取整个 json 响应，解析它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 获取电子邮件正文（当然还有更多变体，例如获取电子邮件源代码或呈现的电子邮件 html，我们只需要message) 那么我们就可以解析body来获取我们想要的内容，代码如下：

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！

Answer 3

我不得不做同样的事情，但我们使用的邮件测试服务器不支持 imap。因此，如果有人遇到同样的问题，我使用 mailpop3 npm 库实现了与 alecxe 类似的解决方案。

然而，pop3 客户端的问题在于它不充当侦听器，因此我们必须定义一个辅助函数，以便在我们需要测试最新电子邮件时连接、登录并获取最新电子邮件.

像这样：

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;
}

在量角器测试用例中从电子邮件中获取值

Fetching values from email in protractor test case

javascript

email

testing

protractor

mailcatcher