@chassisjs/hermes/lib/utils/addDisposeOnSigterm.test.js

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import { afterAll, beforeAll, describe, expect, jest, test } from '@jest/globals';
import { setTimeout } from 'node:timers/promises';
import { addDisposeOnSigterm } from './addDisposeOnSigterm.js';
describe('addDisposeOnSigterm', () => {
    const _processOn = process.on;
    beforeAll(() => {
        process.on = jest.fn();
    });
    afterAll(() => {
        process.on = _processOn;
    });
    test(`it registers a callback for SIGTERM and SIGINT`, async () => {
        const cleanMock = jest.fn().mockResolvedValue(undefined);
        addDisposeOnSigterm(cleanMock);
        expect(cleanMock).not.toHaveBeenCalled();
        expect(process.on).toHaveBeenCalledTimes(2);
        expect(process.on).toHaveBeenCalledWith('SIGTERM', expect.any(Function));
        const callback1 = jest.mocked(process.on).mock.calls[0][1];
        const callback2 = jest.mocked(process.on).mock.calls[1][1];
        callback1();
        callback2();
        await setTimeout(200);
        expect(cleanMock).toHaveBeenCalledTimes(2);
    });
});
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