`Parallel` throws away global beforeEach in multi-browser mode

[docentovich]

• **I'm submitting a ... **

  • bug report
  • feature request

• What is the current behavior?
  If I have some global beforeEach or afterEach methods defined in none of the describe block, in multi-browser mode, some browser instances will ignore such beforeEach or afterEach, as they will do if they were wrapped in some describe block. But when I didn't wrap beforeEach or afterEach in any describe block I expected that they will run in each test runs in each browser.

• What is the expected behavior?
  global beforeEach or afterEach (not wrapped in any describe block) runs in each test run in each browser instance

• Other information (e.g. detailed explanation, stacktraces, related issues, suggestions how to fix, links for us to have context, eg. stackoverflow, gitter, etc)

My workaround:

Karma config:

module.exports = function (config) {
  config.set({
    basePath: '',
    frameworks: ['parallel', 'jasmine', '@angular-devkit/build-angular'],
    plugins: [
      require('karma-parallel'),
      require('karma-jasmine'),
      require('karma-chrome-launcher'),
      require('karma-jasmine-html-reporter'),
      require('karma-coverage-istanbul-reporter'),
      require('@angular-devkit/build-angular/plugins/karma'),
    ],
    parallelOptions: {
      shardStrategy: 'custom',
      customShardStrategy: function (config) {
        window.parallelDescribeCount = window.parallelDescribeCount || 0;
        window.parallelDescribeCount++;

        if (
          config.description === 'important beforeEach or afterEach go next!' // <===== there
        ) {
          return true;
        }

        return (
          window.parallelDescribeCount % config.executors === config.shardIndex
        );
      },
    },
  });
};

some-test-helper-with-global-beforeEach:

describe('important beforeEach or afterEach go next!', () => {
  beforeAll(() => {
    console.log('important describe');
  });
});

// beforeEach and afterEach go after  'important beforeEach or afterEach go next!' description. If i wrap it in description
// karma will ignore this beforeEach and afterEach on every other describe blocks 
beforeEach(() => {
.....
});
afterEach(() => {
....
});