cypress-mailisk

Install with npm

npm install --save-dev cypress-mailisk

Install with Yarn

yarn add cypress-mailisk --dev

After installing the package add the following in your project's cypress/support/e2e.js:

import 'cypress-mailisk';

Setup API Key

To be able to use the API you will need to add your API key to cypress.config.js:

module.exports = defineConfig({
  env: {
    MAILISK_API_KEY: 'YOUR_API_KEY',
  },
});

Usage

The cypress-mailisk plugin provides additional commands which can be accessed on the cypress object, for example cy.mailiskSearchInbox(). These commands extend the Chainable object which allows you to use the then() method to chain commands.

cy.mailiskSearchInbox

This is the main command to interact with Mailisk, it wraps the Search Inbox endpoint.

cy.mailiskSearchInbox('yournamespace', { to_addr_prefix: 'test.user@' }).then((response) => {
  const emails = response.data;
  // ...
});

This Cypress command does a few extra things out of the box compared to calling the raw API directly:

• By default it uses the wait flag. This means the call won't return until at least one email is received. Disabling this flag via wait: false can cause it to return an empty response immediately.
• The request timeout is adjustable by passing timeout in the request options. By default it uses a timeout of 5 minutes.
• By default it returns emails in the last 15 minutes. This ensures that only new emails are returned. This can be overriden by passing the from_timestamp parameter (from_timestamp: 0 will disable filtering by email age).

// timeout of 5 minute
cy.mailiskSearchInbox(namespace);
// timeout of 1 minute
cy.mailiskSearchInbox(namespace, {}, { timeout: 1000 * 60 });
// returns immediately, even if the result would be empty
cy.mailiskSearchInbox(namespace, { wait: false });

For the full list of filters and their description see the Search Inbox endpoint reference.

Filter by TO address

The to_addr_prefix option allows filtering by the email's TO address. Specifically the TO address has to start with this.

For example, if someone sends an email to [email protected], you can filter it by using my-user-1@:

cy.mailiskSearchInbox(namespace, {
  to_addr_prefix: 'my-user-1@',
});

Filter by FROM address

The from_addr_includes option allows filtering by the email's FROM address. Specifically the TO address has to include this. Note that this is different from the to address as it is includes not prefix.

For example, if someone sends an email from the example.com domain we could filter like so:

cy.mailiskSearchInbox(namespace, {
  from_addr_includes: '@example.com',
});

If we know a specific email address we want to listen to we can do this:

cy.mailiskSearchInbox(namespace, {
  from_addr_includes: '[email protected]',
});

Filter by Subject

The subject_includes option allows filtering by the email's Subject. Specifically the Subject has to include this (case-insensitive).

If we're testing password reset that sends an email with the subject Password reset request. We could filter by something like this:

cy.mailiskSearchInbox(namespace, {
  subject_includes: 'password reset request',
});

Common test cases

Password reset page

This example demonstrates going to a password reset page, requesting a new password, receiving reset code link via email and finally setting the new password.

describe('Test password reset', () => {
  let resetLink;
  const namespace = 'yournamespace';
  const testEmailAddr = `test.test@${namespace}.mailisk.net`;

  it('Starts a password reset', () => {
    cy.visit('https://example.com/password_reset');
    cy.get('#email_field').type(testEmailAddr);
  });

  it('Gets a password reset email', () => {
    cy.mailiskSearchInbox(namespace, {
      to_addr_prefix: testEmailAddr,
      subject_includes: 'password',
    }).then((response) => {
      expect(response.data).to.not.be.empty;
      const email = response.data[0];
      expect(email.subject).to.equal('Please reset your password');
      resetLink = email.text.match(/.(https:\/\/example.com\/password_reset\/.*)>\n*/)[1];
      expect(resetLink).to.not.be.undefined;
    });
  });

  it('Goes to password reset link', () => {
    cy.visit(resetLink);
    cy.title().should('contain', 'Change your password');
    cy.get('#password').type('MyNewPassword');
    cy.get('#password_confirmation').type('MyNewPassword');
    cy.get('form').submit();
  });
});

See the full Mailisk Documentation for more examples and information.