Testing: Mocha done() stops subsequent tests

I’m submitting a…

[ ] Regression (a behavior that used to work and stopped working in a new release)
[x] Bug report  
[ ] Feature request
[ ] Documentation issue or request
[ ] Support request => Please do not submit support request here, instead see https://github.com/angular/angular/blob/master/CONTRIBUTING.md#question

Current behavior

At use the standard case with the Mocha done() function, subsequent tests are not run.

it('should work', (done) => {
     done();
});

it('should work too', () => {
     // will not be executed
});

Expected behavior

The subsequent tests should continue to run.

What is the motivation / use case for changing the behavior?

Ability to write tests using Mocha

Environment

Angular version: 5.2.3


Browser:
- [x] Chrome (desktop) version 64.0.3282.140
 
For Tooling issues:
- Node version: 8.9.4  
- Platform:  Windows 10

Others:
Angular CLI used as a test starter.

[JiaLiPassion]

@NiKlimenko , thank you for posting the issue, it is a bug of zone.js not compatible with new version of mocha, I will fix it in zone.js.

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