tests/mockblackbox.py

tests: mock getpid to reduce glob usage

With util.getpid, it is now possible to define fixed pids.

Future iterations can define a map of pids on a locked
first come first serve basis to create a more realistic
harness, but for now this is good enough.

This applies to blackbox, but could apply to other
tests as well.

from mercurial import util

def makedate():
    return 0, 0
def getuser():
    return 'bob'
def getpid():
    return 5000

# mock the date and user apis so the output is always the same
def uisetup(ui):
    util.makedate = makedate
    util.getuser = getuser
    util.getpid = getpid