tests/crashgetbundler.py

tests: make autodiff.py work on Python 3

This patch adds b'' to string literal to make it compatible with in-core Python
3 compatibility.

# skip-blame because we are just adding b''

Differential Revision: https://phab.mercurial-scm.org/D1791

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)