Today I Learned

A Hashrocket project

Custom Cypress Commands

I’ve been loving my first forays into Cypress integration testing. It feels really well made.

Today I learned how to create a custom Cypress command. Logging into the application is a classic use-case: I need to do it in almost every test, and I’d like a function that accepts arguments and centralizes the DOM manipulation.

Here it is:

// cypress/support/commands.js

Cypress.Commands.add('signIn', ({ email, password }) => {
  cy.visit('/sign-in');
  cy.get('input[name="email"]').type(email);
  cy.get('input[name="password"]').type(password);
  cy.get('form').submit();
});

The command is now available in any test without an explicit import:

cy.signIn({ email: 'dev@hashrocket.com', password: 'password' });

Abstraction!

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