tests/crashgetbundler.py

rust-cpython: binding for AncestorsIterator

It's now reachable from Python as
rustext.ancestor.AncestorsIterator

Tests are provided in the previously introduced
Python testcase: this is much more convenient
that writing lengthy Rust code to call into Python.

Differential Revision: https://phab.mercurial-scm.org/D5439

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)