How to login in Auth0 in an E2E test with Cypress?

This is not currently supported in Cypress. I built a workaround that might help, though.

I set up a simple server that runs in parallel to cypress. The endpoint opens a headless instance of Puppeteer and completes the login flow, responding to the call with all the cookies:

const micro = require("micro");
const puppeteer = require("puppeteer");
const url = require("url");

const login = async (email, password) => {
  const browser = await puppeteer.launch({ headless: true });
  const page = await browser.newPage();
  await page.goto("https://my-login-page.com");
  // do whatever you have to do to get to your auth0 lock screen, then:
  await page.waitFor(".auth0-lock-input-email");
  await page.waitFor("span.auth0-label-submit");
  await page.type(".auth0-lock-input-email input", email);
  await page.type(".auth0-lock-input-password input", password);
  await page.click("span.auth0-label-submit");
  await page.waitFor("some-selector-on-your-post-auth-page");
  return page.cookies();
 };

const server = micro(async (req, res) => {
  // expect request Url of form `http://localhost:3005?email=blahblah&password=blahblah
  const data = url.parse(req.url, true);
  const { email, password} = data.query;
  console.log(`Logging ${email} in.`);
  return login(email, password);
});

server.listen(3005);

Then I just extend Cypress to add the login command:

Cypress.Commands.add("login", (email, password) => {
  const reqUrl = `http://localhost:3005?email=${encodeURIComponent(
    email
  )}&password=${encodeURIComponent(password)}`;
  console.log("Beginning login.", reqUrl);
  cy.request(reqUrl).then(res => {
    const cookies = res.body;
    cookies.forEach((c) => {
      cy.setCookie(c.name, c.value, c);
    });
  });
});

Each call takes ~5-10s, which sucks, but better than not having any auth at all :/