How to run Jest tests sequentially?

Question

I\'m running Jest tests via npm test. Jest runs tests in parallel by default. Is there any way to make the tests run sequentially?

I have some tests cal

Answer 1

It worked for me ensuring sequential running of nicely separated to modules tests:

1) Keep tests in separated files, but without spec/test in naming.

|__testsToRunSequentially.test.js
|__tests
   |__testSuite1.js
   |__testSuite2.js
   |__index.js

2) File with test suite also should look like this (testSuite1.js):

export const testSuite1 = () => describe(/*your suite inside*/)

3) Import them to testToRunSequentially.test.js and run with --runInBand:

import { testSuite1, testSuite2 } from './tests'

describe('sequentially run tests', () => {
   testSuite1()
   testSuite2()
})