tests/mockmakedate.py

tests: disable `worker.backgroundclose` to stabilize a test on Windows

TIL that `worker.enabled=0` doesn't prevent these workers from spinning up.  At
any rate, there's already a whole lot of conditionalized output following
`cat client.log`, the placement of the "starting 4 threads for background file
closing" message seems unstable, and we don't care about those worker threads
here.  Preventing the message is better for test maintenance.

# mock out util.makedate() to supply testable values


import os

from mercurial import pycompat
from mercurial.utils import dateutil


def mockmakedate():
    filename = os.path.join(os.environ['TESTTMP'], 'testtime')
    try:
        with open(filename, 'rb') as timef:
            time = float(timef.read()) + 1
    except IOError:
        time = 0.0
    with open(filename, 'wb') as timef:
        timef.write(pycompat.bytestr(time))
    return (time, 0)


dateutil.makedate = mockmakedate