how to pull from previous test case in cypress - cypress

Question

I am currently studying cypress and as I was going through the tutorials one thing popped up in my mind. What if I wrote a small test case to, for example, open a website, click login and enter the credentials. Then I want to start a new test case to do something else on that website once logged in but on a different test case. Can I pull the information from the first one?
What I mean is this:
describe('My first test', function () {
it('login as user', function () {
cy.visit('https://uat2.myregus.com/home')
cy
.get('#header_LogIn').click()
.get('#Username').click()
.type('dogejaq#getairmail.com')
.type('{enter}')
.get('.password').click()
.type('Test_123!')
.type('{enter}')
})
})
Then my second case would pull the information from the above so that I can continue.
describe('My second test', function () {
it('book a meeting', function () {
cy.visit('https://uat2.myregus.com/home')
})
})
The reason I want to do this is because I don't want to run both tests every time. Essentially it would log me in every time using those credentials. I was thinking of making a separate .js file to pull from but I am not sure how. Please help.

Answer 1

Coupling multiple tests together is an anti-pattern. Your tests should always be able to be run independently from one another and still pass.
See docs from Cypress best practices here.
The code from your first test should be wrapped in a beforeEach hook so it can be run before each it():
describe('My second test', function () {
beforeEach(() => {
cy
.get('#header_LogIn').click()
.get('#Username').click()
.type('dogejaq#getairmail.com')
.type('{enter}')
.get('.password').click()
.type('Test_123!')
.type('{enter}')
})
it('book a meeting', function () {
cy.visit('https://uat2.myregus.com/home')
})
it('does something else', function () {
cy.visit('...')
})
})
You should also have a look at these logging in recipes to perform backend authentication instead of going through the UI to log in before each test.