def test_haveReadLocks(self):
"""check if there is a ReadLock """
timeout = 2.0
write_lock = WriteLock(self.lock_dir, timeout)
read_lock = ReadLock(self.lock_dir)
# acquired ReadLock
assert read_lock.acquire(0.1)
result_before = write_lock._haveReadLocks()
assert result_before
# try to acquire WriteLock
assert write_lock.acquire()
result_after = write_lock._haveReadLocks()
assert not result_after
