404notfound.js

const baseUrlTesla = "https://www.tesla.com/";
  const url404test = "https://www.tesla.com/not-a-real-page";
  it("404 'not found' response", () => {
    cy.request({
      url: url404test,
      followRedirect: false,
      failOnStatusCode: false,
    }).then((resp) => {
      expect(resp.status).to.eq(404);
      expect(resp.redirectedToUrl).to.eq(undefined);
    });
    cy.visit(url404test, { failOnStatusCode: false });
    cy.get(".error-code").should("contain", "404");
    cy.get(".error-text").should("contain", "Page not found");
  });