def test_diamond_shape(self):
q = Queue()
a = Thread(target = queue_echo, args = [q, 'a'])
b = Thread(target = queue_echo, args = [q, 'b'])
c = Thread(target = queue_echo, args = [q, 'c'])
d = Thread(target = queue_echo, args = [q, 'd'])
b.depends_on(a)
c.depends_on(a)
d.depends_on(b)
d.depends_on(c)
[t.start() for t in (a,b,c,d)]
[t.join(join_timeout) for t in (a,b,c,d)]
self.assertEqual(q.get(), 'a')
q.get()
q.get()
self.assertEqual(q.get(), 'd')
def test_two_threads(self):
first = Thread(target = dummy_fun)
second = Thread(target = dummy_fun)
second.depends_on(first)
first.start()
second.start()
first.join(join_timeout)
second.join(join_timeout)
def test_multiple_starts(self):
t = Thread(target = dummy_fun)
t.start()
t.join(join_timeout)
self.assertRaises(RuntimeError, t.start )
def test_single(self):
t = Thread(target = dummy_fun)
t.start()
t.join(join_timeout)
