/usr/lib/python2.7/dist-packages/systemfixtures/threads.py is in python-systemfixtures 0.6.4-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 | from fixtures import MonkeyPatch
class FakeThreads(MonkeyPatch):
    def __init__(self):
        super(FakeThreads, self).__init__("threading.Thread", self)
        self._threads = []
        self._hang = False
    def hang(self, flag=True):
        self._hang = flag
    def __getitem__(self, index):
        return self._threads[index]
    def __call__(self, *args, **kwargs):
        thread = _Thread(*args, **kwargs)
        if not thread.name:
            thread.name = "fake-thread-{}".format(len(self._threads))
        thread.hang = self._hang
        self._threads.append(thread)
        return thread
class _Thread(object):
    def __init__(self, group=None, target=None, name=None, args=(),
                 kwargs={}, daemon=None):
        self.group = group
        self.target = target
        self.name = name
        self.args = args
        self.kwargs = kwargs
        self.daemon = daemon
        self.alive = None  # None -> not started, True/False -> started stopped
        self.hang = None
    def start(self):
        if self.alive is not None:
            raise RuntimeError("threads can only be started once")
        self.alive = True
        if not self.hang:
            self.target(*self.args, **self.kwargs)
            self.alive = False
    def join(self, timeout=None):
        if self.alive is None:
            # It's an an error to join() a thread before it has been started
            raise RuntimeError("cannot join thread before it is started")
        if self.hang:
            if timeout is None:
                raise AssertionError(
                    "can't simulate hung thread with no timeout")
    def isAlive(self):
        return bool(self.alive)
    is_alive = isAlive
 |