Code review comment for lp:~jameinel/bzr/1.16-abort-resume-aborts-start

This gives a cleaner test suite run on Windows.

Basically, Repository.resume_write_group() internally _starts_write_group() and then resumes the given tokens.

However, tokens can fail to be resumed, which leaves things in an intermediate state. Namely, the _start_write_group finished, but wasn't aborted. Which leaves open the NewPack.

I don't know if this ever matters in practice, but at least on Windows it causes
    def test_cannot_resume_aborted_write_group(self):

To give cleanup stipple because we can't cleanup the working dir because of the open file handle.