'Refetch an existing thread when it exists.'

def test_refetch_thread(self):

    self.assertRaises(TimeoutException, make_sum, 1, 2, sleep=0.5)
    self.assertEquals(count, 1)
    time.sleep(0.5)
    self.assertEquals(make_sum(1, 2, sleep=0.5), 3)
    self.assertEquals(count, 1)
    self.assertRaises(TimeoutException, make_sum, 1, 2, sleep=0.5)
    self.assertEquals(count, 2)
