I need a way to increment a value in cypress code

Question

I'm trying to automate a sign up scenario. In sign up form, I have an email address field which is unique.

I'm using this code:

cy.get('#e_mail',{timeout:10000}).type('mpataz.tsc+1@gmail.com')

In next run am change the value in the email to be +2 and so on in each run.

Is there a way to make the value increment automatically in each run?

user_9438913 · Answer

you can get uniq number by using new Date().getTime(); it will return uniq number every time with reference to the current Date

const timestamp = new Date().getTime(); //1642080371822

cy.get('#e_mail').type(`mpataz.tsc+${timestamp}@gmail.com`)

instead of hardcoded timeout you can extract it and add to global defaultCommandTimeout inside cypress.json

  "defaultCommandTimeout": 10000,

user_4571271 · Answer

You can use faker js library to generate unique email id's.

After installing the faker js npm package, At the top of the spec file write:

const faker = require('faker')

Then in your tests write:

cy.get('#e_mail',{timeout:10000}).type(faker.internet.email())

user_17917809 · Answer

If you want to make your emails unique, I'd suggest doing using a timestamp with Cypress._.random() to generate the email each time.

const timestamp = String(+new Date()).slice(5)
const email = `test-email+m${timestamp}_${Cypress._.random(5)}@email.com`