tests/svn-safe-append.py

test: rename 'test-push-r.t' to 'test-push.t'

We do not have a simple test for 'hg push' but we have multiple tiny tests for
various aspect of it. We'll unify them into a single file, and we start with
'test-push-r.t'. The code is unchanged but we renamed the repository used to
avoid collision with other tests we'll import in coming changesets.

Test timing for the record:

start   end     cuser   csys    real      Test
  1.850   2.640   0.650   0.090   0.790   test-push-validation.t
  2.640   3.520   0.760   0.090   0.880   test-push-hook-lock.t
  0.000   1.850   1.560   0.210   1.850   test-push-r.t

#!/usr/bin/env python

from __future__ import absolute_import

__doc__ = """Same as `echo a >> b`, but ensures a changed mtime of b.
Without this svn will not detect workspace changes."""

import os
import sys

text = sys.argv[1]
fname = sys.argv[2]

f = open(fname, "ab")
try:
    before = os.fstat(f.fileno()).st_mtime
    f.write(text)
    f.write("\n")
finally:
    f.close()
inc = 1
now = os.stat(fname).st_mtime
while now == before:
    t = now + inc
    inc += 1
    os.utime(fname, (t, t))
    now = os.stat(fname).st_mtime