Cypress test for verifying app writes valid data to database

Account.spec.js

const USER_PROFILE_PATH = `users/${Cypress.env('TEST_UID')}`

describe('Account Page', () => {
  beforeEach(() => {
    // Login using custom token
    cy.login()
    // Go to account page
    cy.visit('/account')
  })
  
  afterEach(() => {
    // Reset the displayName in the user's profile to "Test User"
    cy.callRtdb('update', USER_PROFILE_PATH, { displayName: 'Test User' })
  })

  it('User can update their account', () => {
    const newDisplayName = 'New Name'
    cy.get('[data-test=displayName]').type(newDisplayName)
    // Click to create new transaction
    cy.get('[data-test=save-account]')).click()
    // Get user profile data for value comparison
    cy.callRtdb('get', USER_PROFILE_PATH)
      .then((account) => {
        // Confirm profile contains updated displayName
        cy.wrap(account)
          .its('displayName')
          .should('equal', newDisplayName)
      })
  })
})