Jest globalTeardown not run after test is failed - node.js

Question

I am trying to start and stop serverless application through code. I am able to start and stop it once all tests pass. However when test fails globalTeardown do not run. You can check sample project here: https://github.com/bilalsha/sls-test-jest/tree/fail_test
teardown.js
module.exports = async function() {
let slsOfflineProcess = global.__SERVERD__;
slsOfflineProcess.stdin.write('q\n');
slsOfflineProcess.stdin.pause();
await slsOfflineProcess.kill('SIGINT');
console.log('Serverless Offline stopped');
};
output
7 | expect(res.statusCode).toEqual(200);
> 8 | expect(res.body).toEqual('Go Serverless v1.0! Your function executed successfully!');
| ^
9 | });
10 | });
11 |
at Object.<anonymous> (handler.test.js:8:20)
Test Suites: 1 failed, 1 total
Tests: 1 failed, 1 total
Snapshots: 0 total
Time: 1.972s, estimated 2s
Ran all test suites.
npm ERR! Test failed. See above for more details.

Answer 1

Just eyeballing the docs it looks like your problem is in your jest.config.js when you set it to bail: true
https://github.com/bilalsha/sls-test-jest/blob/fail_test/test/jest.config.js#L3
the docs say that if bail is true it's the same as making the tests stop after the first failure.
https://jestjs.io/docs/en/configuration#bail-number--boolean
I would try changing bail: 0 (the default), and seeing if it produces your expected behavior.

Answer 2

What you can do is add create a script containing the afterAll function:
afterAll(() => {
console.log("I ran");
});
And add the script to the setupFiles or setupFilesAfterEnv. In my case, I ejected one react poc code that had failing tests:
In package.json's Jest config there was this entry:
"jest": {
...
"setupFilesAfterEnv": [
"<rootDir>/src/setupTests.js"
],
...
}
So I added the clause in setupTests.js below is the edited file:
// jest-dom adds custom jest matchers for asserting on DOM nodes.
// allows you to do things like:
// expect(element).toHaveTextContent(/react/i)
// learn more: https://github.com/testing-library/jest-dom
import '#testing-library/jest-dom/extend-expect';
afterAll(() => {
console.log("I ran");
});
Now, when I ran my tests this is the result:
FAIL src/App.test.js
✓ renders learn react link (14ms)
✕ renders class (5ms)
● renders class
expect(jest.fn()).toHaveBeenCalledTimes(expected)
Expected number of calls: 1
Received number of calls: 0
18 | // someClass.someProp = "";
19 | render(<App />);
> 20 | expect(track).toHaveBeenCalledTimes(1);
| ^
21 | });
22 |
at Object.<anonymous> (src/App.test.js:20:17)
console.log src/setupTests.js:8
I ran <---------------
Test Suites: 1 failed, 1 total
Tests: 1 failed, 1 passed, 2 total
Snapshots: 0 total
Time: 1.352s, estimated 2s
Ran all test suites.
You can see that I ran is there even after failing a test. This is an alternative that you may use, as you have put a bounty I thought maybe solving the problem is more important that why globalTeardown is not working.