❓A global before in parallel mode.

[sarbbottam]

mocha version: 8.10

//.mocharc.yml
file: 'lib/utils/setup.js'
require: 'lib/bootstrap.js'

//lib/utils/setup.js
const {environment} = require('./environment.js');
const {TIMEOUT_DURATION, TEST_USERS} = require('../configs/test-config.js');
const { cacheCookies } = require('./cookie-jar');

const roles = Object.keys(TEST_USERS[environment]);
// for the current environment create login session for all the test users
before(async function() {``
  this.timeout(TIMEOUT_DURATION * roles.length);
  console.log('warming up cookie jar for all the test users');
  return cacheCookies(environment);
});

When I run mocha --exit it works fine, however when I run mocha -p --exit I get the following error

ERROR: --parallel runs test files in a non-deterministic order, and is mutually exclusive with --file

How can I have a global before in parallel mode?

Thanks!

[nicojs]

I think you're looking for the root hooks plugin system, right? It works with --parallel and non-parallel mode. (introduced in 7.2)

[sarbbottam]

Thanks, @nicojs for sharing your thoughts.

beforeAll:

• In serial mode (Mocha’s default), before all tests begin, once only
• In parallel mode, run before all tests begin, for each file

I am wondering if there is a way to run the beforeAll or something similar only once not for each file in parallel mode.

[nicojs]

Ah, thanks for the clarification. I think #4360 is what you're looking for. Marking it as a duplicate, if you disagree please let me know.

Duplicate of: #4308

[sarbbottam]

Thank you @nicojs, yea this is the same as #4308.