Document globalSetup usage

In the documentation there is reference to setting up authentication in globalSetup and then sharing that login across all test runs:

1. Run tests (for example, with npm run test).
2. Login via UI and retrieve authentication state.
   • In Jest, this can be executed in globalSetup.
3. In each test, load authentication state in beforeEach or beforeAll step.

This seems to suggest a setup like:

// jest.config.js
module.exports = {
  globalSetup: '<rootDir>/jest.globalSetup.js',
  preset: 'jest-playwright-preset',
  setupFilesAfterEnv: ['expect-playwright', '<rootDir>/jest.setup.js'],
}

But there is nothing playwright-related setup when globalSetup runs:

// jest.globalSetup.js
module.exports = async function globalSetup() {
  console.log('setting up', Object.keys(global));
};

So does going this route require manually setting up playwright, or is there some way to get access to the instance that jest-playwright-preset creates?

[mmarkelov]

@Xezed I’m going to work on this. I think it can be helpful. But it will quite difficult to rewrite

[Xezed]

There is some misunderstanding happened. 😄 I’ve plunged into source code and found a way to absolutely satisfy my need. Created a pull request please merge it @mmarkelov 🙏 🙏 🙏