Example test for auth0 with Cypress

login.spec.js

describe('Authentication with auth0', () => {
  it('should successfully login to our app', () => {
    cy.login()
      .then(resp => resp.body)
      .then((body) => {
        const { access_token, expires_in, id_token } = body;
        const auth0State = {
          nonce: '',
          state: 'some-random-state',
        };
        const callbackUrl = `/callback#access_token=${access_token}&scope=openid&id_token=${id_token}&expires_in=${expires_in}&token_type=Bearer&state=${auth0State.state}`;
        cy.visit(callbackUrl, {
          onBeforeLoad(win) {
            // eslint-disable-next-line no-param-reassign
            win.document.cookie = `com.auth0.auth.some-random-state=${JSON.stringify(auth0State)}`;
            // eslint-disable-next-line no-param-reassign
            win.document.cookie = 'auth0.is.authenticated=true';
          },
        });
      });

    cy.visit('/');
    cy.get('body').should('contain', 'Home');
  });
});