cleanUp does not wait until daemon is actually dead

[Stuart Bishop]

The TacTestFixture's killTac method does not wait until the daemon is really dead. This can cause tests to fail intermittently, where operations succeed that are supposed to be failing.

My work around:

    def shutdown(self):
        self.cleanUp()
        while self._hasDaemonStarted():
            time.sleep(0.1)

[Colin Watson (cjwatson)]

Fixed in txfixtures 0.4.3 (https://github.com/testing-cabal/txfixtures/pull/13), and I've removed the workaround from Launchpad as well (https://code.launchpad.net/~cjwatson/launchpad/+git/launchpad/+merge/379456).