preserveOnce

[roydekleijn]

Hello,

I norices preserveOnce is deprecated and there is some reference to the session documentation. But how should this look like if we implement it according session?

  cy.getCookies().then(cookies => {
    const namesOfCookies = cookies.map(c => c.name)
    Cypress.Cookies.preserveOnce(...namesOfCookies)
  })

Any help would be much appreciated. Maybe we can eventually update the documentation,
Roy

[emilyrohrbough]

@roydekleijn cy.session() will preserve the cookies for you so using the command similar to the following will persist these cookies for you:

beforeEach(() => {
  cy.session('unique_id', () => {
    // logic to establish the cookies you need to preserver
  })
})

it('', () => {
  // cookies have been applied from saved session in before-each hook
  cy.visit('url_to_test')
  // ....
})

[roydekleijn]

I think my case is a bit different. We have a very large SPA application. I want to implement some logical "teststeps" in each it. So within a single describe all the its should continue on the same session, without doing cy.visit() everytime. (is that possible?)

The deprecated way of preserving cookies works perfectly for my case. But ya, it's deprecated...

[jozso39]

I recommend turning off testIsolation to tests, you have to specify it on the top describe of the test:

describe(`your test`, { testIsolation: false }, () => {
		it(`this test or step`, () => {
			// test code
		});
	});
	

This way, the session will not be cleared between it-s.
There is another problem: the sessions will carry over to another tests. You just have to clear the session in the before hook.