contrib/benchmarks/perf.py

graft: reuse --user and --date values in `hg graft --continue` (BC)

Reading the user and date information from graftstate during `hg graft
--continue` will help us in preserving the user and date arguments passed when
`hg graft` was called. This patch reads that information and reuses that while
running `hg graft --continue`. So after this patch, --user and --date values are
preserved even if conflicts occur and user don't need to pass them again.

The test changes demonstrate the fix.

This is a backward incompatible change but I think of this more as a bug fix.
Also thinking about removing the line from `hg help graft` which says --continue
does not reapply other flags but need to check what are the other flags which
needs to be preserved.

Differential Revision: https://phab.mercurial-scm.org/D3659

# perf.py - asv benchmarks using contrib/perf.py extension
#
# Copyright 2016 Logilab SA <[e-mail]>
#
# This software may be used and distributed according to the terms of the
# GNU General Public License version 2 or any later version.

from __future__ import absolute_import

from . import perfbench

@perfbench()
def track_tags(perf):
    return perf("perftags")

@perfbench()
def track_status(perf):
    return perf("perfstatus", unknown=False)

@perfbench(params=[('rev', ['1000', '10000', 'tip'])])
def track_manifest(perf, rev):
    return perf("perfmanifest", rev)

@perfbench()
def track_heads(perf):
    return perf("perfheads")