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Testing HTML Emails using Cypress

Testing HTML Emails using Cypress

Cypress is an end-to-end testing framework that can be used to test web applications, including HTML emails. To test HTML emails using Cypress, you would need to first set up your email client or service to send the emails to a test email inbox that Cypress can access. Once the emails are received in the test inbox, Cypress can use its built-in commands to interact with the HTML elements in the email and perform various actions, such as clicking links or filling out forms. Cypress can also assert that certain elements or content are present in the email, or that certain actions have the expected results. It’s important to note that Cypress is not designed to interact with email clients specifically, it’s focused on browser testing.

Here is an example of how you might integrate Mailtrap with Cypress to test HTML emails:

  1. Sign up for a Mailtrap account and create a new inbox.
  2. Configure your email client or service to send the HTML emails to the Mailtrap inbox.
  3. In your Cypress tests, use the cy.request() command to access the Mailtrap API and check for the arrival of the email in the inbox. You will need to use the Mailtrap API endpoint and your Mailtrap API credentials to make the request. For example:
    cy.request({
      method: 'GET',
      url: 'https://mailtrap.io/api/v1/inboxes/<inbox_id>/messages',
      auth: {
        user: '<api_token>',
      }
    }).then((response) => {
      expect(response.status).to.eq(200)
      expect(response.body).to.contain('Your email subject')
    })
    

    4. Once the email is received, you can use Cypress’ built-in commands to interact with the HTML elements in the email, such as clicking links or filling out forms. For example:

    cy.get('a[href*="your-email-link"]').click()
    cy.url().should('include', 'your-email-link')
    

    5. Assert that certain elements or content are present in the email, or that certain actions have the expected results. For example:

    cy.get('h1').should('contain', 'Your email title')
    cy.get('form').should('have.attr', 'action', 'your-form-action-url')
    

    Note that Mailtrap only provides a simulated environment for email testing, but it can be a great tool for testing the email’s content, the email’s subject, the email’s sender, etc, and it’s easy to use with Cypress.

    Also, Keep in mind that, Mailtrap API is a paid service, so you need to check their pricing plan before use it.

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Author : Ghulam Nabi

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