🐛 Bug: Tests pass without running after uncaught exception

[JoshuaKGoldberg]

Bug Report Checklist

• I have read and agree to Mocha's Code of Conduct and Contributing Guidelines
• I have searched for related issues and issues with the faq label, but none matched my issue.
• I have 'smoke tested' the code to be tested by running it outside the real test suite to get a better sense of whether the problem is in the code under test, my usage of Mocha, or Mocha itself.
• I want to provide a PR to resolve this

Expected

If an uncaught exception occurs, I would think Mocha should report a failure and continue running subsequent tests.

Actual

If a test throws an error inside a process.nextTick callback, Mocha correctly reports that test failing, but then doesn't run subsequent tests. It reports them as passed.

For example, in the MRE, there are three tests -a, b, and c- and b throws an error inside process.nextTick. The report is:

  a
    ✔ should pass

  b
    ✔ should pass, then fail
    1) should pass, then fail


  2 passing (3ms)
  1 failing

  1) b
       should pass, then fail:
     Uncaught Error: uncaught!!
      at /Users/josh/repos/repros/test/example-b.js:4:15
      at process.processTicksAndRejections (node:internal/process/task_queues:77:11)

Minimal, Reproducible Example

https://github.com/JoshuaKGoldberg/repros/tree/mocha-skip-test-after-uncaught

git clone https://github.com/JoshuaKGoldberg/repros -b mocha-skip-test-after-uncaught
npm i
npx mocha

Versions

• Mocha: 10.8.2
• Node: 18, 20, and 22

Additional Info

Discovered in #5250 -> 6b5ff68.

Somewhat similar-looking to #5184 but not the same.

[wnghdcjfe]

Hello@JoshuaKGoldberg
I think this error can be resolved in the following two ways.
Are you talking about the part where the fail should appear when an error in process.nextTick occurs?

1. try - catch

describe('b', function() {
  it('should pass, then fail', function(done) {
    process.nextTick(function() {
      try {
        throw new Error('uncaught!!');
      } catch (err) {
        done(err); // Mocha에 에러를 알림
      }
    });
  });
}); 

2. promise

describe('b', function() {
  it('should pass, then fail', function() {
    return new Promise((resolve, reject) => {
      process.nextTick(function() {
        reject(new Error('uncaught!!'));  
      });
    });
  });
});

[JoshuaKGoldberg]

I don't follow what you're asking, sorry. But if you can send a PR that would help me understand :)

[wnghdcjfe]

Okay. I'll PR it later.
First of all, I found that it occur "pass" in beforeEach hook.

If the code is error-handling well, it should appear as follows.