create-cen-app/my-cen-app/frontend/tests/auth.setup.ts

create an client-engineering-style app

import { test as setup } from "@playwright/test";
import { firstSuperuser, firstSuperuserPassword } from "./config.ts";

const authFile = "playwright/.auth/user.json";

setup("authenticate", async ({ page }) => {
  await page.goto("/login");
  await page.getByPlaceholder("Email").fill(firstSuperuser);
  await page.getByPlaceholder("Password").fill(firstSuperuserPassword);
  await page.getByRole("button", { name: "Log In" }).click();
  await page.waitForURL("/");
  await page.context().storageState({ path: authFile });
});