Ensure that errors happening after the test suite is done still get thown

[glenjamin]

Most notably this happens if there are problems in a reporter's summary output, such as that described in #2089

I'd like to include a test for this - but I'm not sure where best to put it. Any thoughts?

Here's a sample which will reproduce the error even after #2094 is fixed:

var assert = require('assert');

describe('x', function() {
  it('should', function() {
    var d = new Date();
    // Force an error during rendering
    d.toISOString = function() { throw new Error("Can't display"); };
    assert.deepEqual([d], ['a']);
  });
});

[danielstjules]

I'd like to include a test for this - but I'm not sure where best to put it. Any thoughts?

If it occurs in all reporters, you could add a fixture and integration spec that tested for the presence of the error.

[glenjamin]

I've added a test into the regression section, as that seemed to be where it fit best.

I was briefly going to add tests into runner.js, as that's where the fix is - but couldn't find a good way to tie it in. I did start adding some useful tests before giving up on that approach - I've left those in this PR as I think they don't hurt, but I'm happy to remove them if desired.

[boneskull]

this was fixed in v5.0.2