def run():
channels = {
'c1': goless.chan(0),
'c2': goless.chan(0),
'c3': goless.chan(0)
}
workers = [make_worker(logme, channels['c1'], channels['c2']),
make_worker(logme, channels['c2'], channels['c3'])]
logging.info("run: defining send_messages...")
print("run: defining send_messages...")
def send_messages():
for ii in range(10):
print("sending val={} into channel['c1']={}", val, channels['c1'])
val = "val:{}".format(ii)
channels['c1'].send(val)
res = goless.go(send_messages)
print("called goless.go(send_messages) => {}".format(res))
while True:
cases = [goless.rcase(channels['c3']),
goless.dcase()]
case, val = goless.select(cases)
if case == cases[1]:
print("hit default, perhaps things are closed? case={} val={}".format(case, val))
break
print("case={}; c3 => {}".format(case, val))
print("closing channel c3")
channels['c3'].close()
print("exiting")
def test_select_chooses_ready_selection(self):
readychan = goless.chan(1)
notreadychan = goless.chan(1)
readychan.send(3)
cases = [goless.rcase(notreadychan), goless.rcase(readychan), goless.dcase()]
result, val = goless.select(cases)
self.assertIs(result, cases[1])
self.assertEqual(val, 3)
def test_select_chooses_ready_selection(self):
readychan = goless.chan(1)
notreadychan = goless.chan(1)
readychan.send(3)
cases = [goless.rcase(notreadychan), goless.rcase(readychan), goless.dcase()]
result, val = goless.select(cases)
self.assertIs(result, cases[1])
self.assertEqual(val, 3)
def test_case_switch(self):
chan = goless.chan()
cases = [goless.rcase(chan), goless.scase(chan, 1), goless.dcase()]
chosen, value = goless.select(cases)
if chosen is cases[0]:
print('Received %s' % value)
elif chosen is cases[1]:
assert value is None
print('Sent.')
else:
assert chosen is cases[2], chosen
print('Default...')
def test_case_switch(self):
chan = goless.chan()
cases = [goless.rcase(chan), goless.scase(chan, 1), goless.dcase()]
chosen, value = goless.select(cases)
if chosen is cases[0]:
print('Received %s' % value)
elif chosen is cases[1]:
assert value is None
print('Sent.')
else:
assert chosen is cases[2], chosen
print('Default...')
def test_select_uses_default(self):
cases = [goless.rcase(self.chan1), goless.dcase()]
result, val = goless.select(cases)
self.assertIs(result, cases[1])
self.assertIsNone(val)
def test_raises_if_multiple_default_cases(self):
with self.assertRaises(AssertionError):
goless.select([goless.dcase(), goless.dcase()])
def test_raises_if_multiple_default_cases(self):
with self.assertRaises(AssertionError):
goless.select([goless.dcase(), goless.dcase()])
def test_select_uses_default(self):
cases = [goless.rcase(self.chan1), goless.dcase()]
result, val = goless.select(cases)
self.assertIs(result, cases[1])
self.assertIsNone(val)
