tests/crashgetbundler.py

run-tests: extract sorting of tests to own function

TestRunner._run() is a large function and is difficult to follow.
Let's extract the test sorting to its own function to make it shorter.

When I refactored run-tests.py several years ago, I put a lot of
functionality in methods. The prevailing Mercurial style is to use
functions - not classes - where possible. While refactoring the code,
I decided to undo this historical mistake of mine by moving the code
to a standalone function.

Differential Revision: https://phab.mercurial-scm.org/D1750

from __future__ import absolute_import

from mercurial.i18n import _
from mercurial import (
        changegroup,
        error,
        extensions
    )

def abort(orig, *args, **kwargs):
    raise error.Abort(_('this is an exercise'))

def uisetup(ui):
    extensions.wrapfunction(changegroup, 'getbundler', abort)