Testing a redirect to a new route with Cypress

I am using Cypress for testing my web application.

This snippet currently works and will submit a new thing:

describe('The Create Page', () => {
  it('successfully creates a thing', () => {
    cy.visit('/create')
    cy.get('input[name=description]').type('Hello World')
    cy.get('button#submit')
      .click()

    // After POST'ing this data via AJAX, the web app then
    // receives the id of the new thing that was just created
    // and redirects the user to /newthing/:id
    // How do I test that this redirection worked?
  })
})

As the comment illustrates, I am not sure how to test whether or not the redirection to the new route works. I can see it in the browser simulation that the redirect works, I just want to add a test for it.

Thanks!!!