Windows: testWithSpectron didn't kill the electron:serve process

Describe the bug We are testing our Electron with { testWithSpectron } from 'vue-cli-plugin-electron-builder'. The stopServe and done are called, Jest says the test ends, but

Jest did not exit one second after the test run has completed. This usually means that there are asynchronous operations that weren’t stopped in your tests. Consider running Jest with --detectOpenHandles to troubleshoot this issue.

I can see the serve process in the TaskManager, and it not ended:

Screenshots

Environment (please complete the following information):

• OS and version:
• node version: v12.13.1
• npm version: 6.13.4
• yarn version (if used): 1.21.1
• vue-cli-plugin-electron-builder version : 1.4.4
• electron version: ^5.0.0
• other vue plugins used:

"@vue/cli-plugin-babel": "^4.1.0",
"@vue/cli-plugin-eslint": "^4.1.0",
"@vue/cli-plugin-router": "^4.1.0",
"@vue/cli-plugin-unit-jest": "^4.1.2",
"@vue/cli-plugin-vuex": "^4.1.0",
"vue-cli-plugin-element": "^1.0.1"

• custom config for vcp-electron-builder:
• (if possible) link to your repo: https://github.com/baruchiro/israeli-bank-scrapers-desktop/tree/UpdateVersions (Note to the branch)

Additional context Command: jest test/e2e --config='test/e2e/jest.e2e.config.js' Config:

module.exports = {
  preset: '@vue/cli-plugin-unit-jest',
  testMatch: ['**/?(*.)+(spec|test).[jt]s?(x)'],
};

Test:

import { testWithSpectron } from 'vue-cli-plugin-electron-builder';

jest.setTimeout(100000);

describe('Launch', () => {
  let app;
  let stopServe;
  let win;
  let client;

  beforeEach(async () => {
    // Wait for dev server to start
    ({ app, stopServe } = await testWithSpectron());
    win = app.browserWindow;
    ({ client } = app);
  });

  test('shows the proper application title', async () => {
    // Window was created
    expect(await client.getWindowCount()).toBe(1);
    // It is not minimized
    expect(win.isMinimized()).toBe(false);
    // Window is visible
    expect(win.isVisible()).toBe(true);
    // Size is correct
    const { width, height } = win.getBounds();
    expect(width).toBeGreaterThan(0);
    expect(height).toBeGreaterThan(0);
    // App is loaded properly
    expect(
      /israeli-bank-scrapers-desktop/.test(
        await client.getHTML('#app'),
      ),
    ).toBe(true);
  });

  afterEach(async (done) => {
    await stopServe();
    done();
    console.log('done');
  });
});

[nklayman]

Seems like it may be related to this: https://github.com/sindresorhus/execa/issues/96. I’m not sure what else it could be, as stopServe kills it pretty clearly. I’ll see if I can find a way to make sure it kills child processes as well.

[deankinane]

Try upgrading to the v2.0 beta. It uses a newer version of execa (used to spawn the dev server), and may fix your problem.

I’ve tried with v2.0 beta but still having the same issue however the open handle is different this time. With v1.4.4 the open handle was PIPEWRAP but now its PROCESSWRAP. Not sure if that is significant.