gmail-test

Package based on az-gmail-tester with small changes

A simple Node.js Gmail client which checks/returns email message(s) straight from any Gmail-powered account (both private and company).
There are two main functionalities this library provides:

1. check_inbox(): Polls a mailbox for a given amount of time. At the end of the operation, the desired message is returned (if found).
2. get_messages(): Can be used to perform various assertions on the email objects
3. send(): Sends message using your gmail account

Usage

1. Install using npm:

npm install --save-dev gmail-test

2. Save the Google Cloud Platform OAuth2 Authentication file named credentials.json inside an accessible directory (see instructions below).
3. In terminal, run the following command:

node node_modules/gmail-test/init.js cypress/support/gmail/credentials.json cypress/support/gmail/token.json <target-email>

<path-to-credentials.json> Is the path to OAuth2 Authentication file.
<path-to-token.json> Is the path to OAuth2 token. If it doesn't exist, the script will create it.
The script will prompt you to go to google.com to activate a token. Go to the given link, and select the account for <target-email>. Grant permission to view your email messages and settings. At the end of the process you should see the token:

Hit the copy button and paste it to init.js script. The process should look like this:

How to get credentials.json?

1. Follow the instructions to Create a client ID and client secret.
2. Once done, go to https://console.cloud.google.com/apis/credentials?project=(project-name)&folder&organizationId and download the OAuth2 credentials file, as shown in the image below. Make sure to replace (project-name) with your project name.

   

The credentials.json file should look like this:

If everything is done right, the last output from the script should be

[gmail] Found!

3. Congratulations! gmail-test is ready to use.

API

get_messages(credentials_json, token_path, options)

credentials_json: Path to credentials JSON file.
token_path: Path to OAuth2 token file.
options:

• include_body: boolean. Set to true to fetch decoded email bodies.
• before: Date. Filter messages received after the specified date.
• after: Date. Filter messages received before the specified date.

Returns: An array of email objects with the following fields:

[
  {
    from: "Human Friendly Name <sender@email-address>",
    receiver: "your@email-address",
    subject: "string",
    body: {
      html: "string",
      text: "string"
    }
  }
  // ...
];

Some senders will send you text/html content, the others will send you plain/text, and some will send you both. Make sure you are looking for the content in the right body field.

Example

Using check_inbox() to look for a specific message:

const path = require("path");
const gmail = require("gmail-tester");
const email = await gmail.check_inbox(
  path.resolve(__dirname, "credentials.json"), // Assuming credentials.json is in the current directory.
  path.resolve(__dirname, "gmail_token.json"), // Look for gmail_token.json in the current directory (if it doesn't exists, it will be created by the script).
  "Activate Your Account", // We are looking for 'Activate Your Account' in the subject of the message.
  "no-reply@domain.com", // We are looking for a sender header which has 'no-reply@domain.com' in it.
  "<target-email>", // Which inbox to poll. credentials.json should contain the credentials to it.
  10, // Poll interval (in seconds).
  30 // Maximum poll time (in seconds), after which we'll giveup.
);
if (email) {
  console.log("Email was found!");
} else {
  console.log("Email was not found!");
}

Implementation check_inbox() to get email body using Codeceptjs

// in Helper
const Helper = require('@codeceptjs/helper');
const gmail = require("gmail-test");

class CustomHelper extends Helper {

    async getMail(email, subject, from) {
        return await gmail.check_inbox(
            "credentials.json", // Assuming credentials.json is in the current directory.
            "token.json", // Look for gmail_token.json in the current directory (if it doesn't exists, it will be created by the script).
            subject, // We are looking for 'Activate Your Account' in the subject of the message.
            from, // We are looking for a sender header which has 'no-reply@domain.com' in it.
            email, // Which inbox to poll. credentials.json should contain the credentials to it.
            10, // Poll interval (in seconds).
            60, // Maximum poll time (in seconds), after which we'll giveup.
            { // optional parameter
                include_body: true, // to return body of the mail
                limit: 3 // to look through recent quantity of mails
            }
        );
    }
}

module.exports = CustomHelper;

Usage check_inbox() to get email body using Codeceptjs

//in test
Scenario('Login with url from email', async () => {
    I.amOnPage('/someUrl');
    I.fillField('loginField', 'some email address');
    I.fillField('passwordField', 'some password');
    I.click('registerButton');
    let mail = await I.getMail('some email address', 'registration topic', 'some sender email');
    let link = mail.body.html.match(/<a[^>]+href="([^\"]+)"+>link<\/a> e.g. Some link href/);
    I.amOnPage(link[1]);
    I.waitForText('You are logged in!')
});

Credits

• Built using googleapis.