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_select_no_default_no_ready_blocks(self):
chan1 = goless.chan()
chan2 = goless.chan()
a = []
cases = [goless.rcase(chan2), goless.rcase(chan1)]
def sel():
a.append(goless.select(cases))
be.run(sel)
self.assertEqual(a, [])
chan1.send(5)
be.yield_()
self.assertEqual(len(a), 1)
chosen, val = a[0]
self.assertEqual(chosen, cases[1])
self.assertEqual(val, 5)
def test_select_no_default_no_ready_blocks(self):
chan1 = goless.chan()
chan2 = goless.chan()
a = []
cases = [goless.rcase(chan2), goless.rcase(chan1)]
def sel():
a.append(goless.select(cases))
be.run(sel)
self.assertEqual(a, [])
chan1.send(5)
be.yield_()
self.assertEqual(len(a), 1)
chosen, val = a[0]
self.assertEqual(chosen, cases[1])
self.assertEqual(val, 5)
def func1():
print("{}[{}] waiting for val".format(name, params['val']))
case, val = goless.select([goless.rcase(params['cin'])])
print("{}[{}] got case={}, val={}".format(name, params['val'], case, val))
time.sleep(params['sleep'])
print("{}[{}] sending to cout...".format(name, params['val']))
params['cout'].send("(" + name + ")=" + val + ";" + params['val'])
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 worker():
while True:
case, val = goless.select([goless.rcase(cin)])
if val is None:
print("cin returned None, is it closed?")
cout.close()
return
print("f1: case={}, val={}".format(case, val))
cout.send(workerfn(val))
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(self):
# https://gobyexample.com/select
c1 = goless.chan()
c2 = goless.chan()
def func1():
time.sleep(.1)
c1.send('one')
goless.go(func1)
def func2():
time.sleep(.2)
c2.send('two')
goless.go(func2)
# We don't print since we run this as a test.
callbacks = []
for i in range(2):
_, val = goless.select([goless.rcase(c1), goless.rcase(c2)])
callbacks.append(val)
self.assertEqual(callbacks, ['one', 'two'])
def test_select(self):
# https://gobyexample.com/select
c1 = goless.chan()
c2 = goless.chan()
def func1():
time.sleep(.1)
c1.send('one')
goless.go(func1)
def func2():
time.sleep(.2)
c2.send('two')
goless.go(func2)
# We don't print since we run this as a test.
callbacks = []
for i in range(2):
_, val = goless.select([goless.rcase(c1), goless.rcase(c2)])
callbacks.append(val)
self.assertEqual(callbacks, ['one', 'two'])
print("{}[{}] got case={}, val={}".format(name, params['val'], case, val))
time.sleep(params['sleep'])
print("{}[{}] sending to cout...".format(name, params['val']))
params['cout'].send("(" + name + ")=" + val + ";" + params['val'])
return func1
funcs = [makeWorker({
'name': 'workerA',
'cin': channels[0],
'cout': channels[1],
'val': 'one',
'sleep': 1
}),
makeWorker({
'name': 'workerB',
'cin': channels[1],
'cout': channels[2],
'val': 'two',
'sleep': 1
})]
for f in funcs:
goless.go(f)
channels[0].send('(main)=inval')
for i in range(1):
case, val = goless.select([goless.rcase(channels[2])])
print("result={}".format(val))
def setUp(self):
BaseTests.setUp(self)
self.ch = goless.chan(self.chansize)
self.ca = goless.rcase(self.ch)
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_exec_with_no_body(self):
be.run(self.ch.send, 'a')
ca = goless.rcase(self.ch)
self.assertEqual(ca.exec_(), 'a')
def test_raises_deadlock_if_no_goroutines(self):
with self.assertRaises(goless.Deadlock):
goless.select(goless.rcase(goless.chan()))
def test_exec_with_no_body(self):
be.run(self.ch.send, 'a')
ca = goless.rcase(self.ch)
self.assertEqual(ca.exec_(), 'a')
def setUp(self):
BaseTests.setUp(self)
self.ch = goless.chan(self.chansize)
self.ca = goless.rcase(self.ch)
if sensor_value:
channel.send((sensor_mode[1], sensor_value))
if isinstance(sensor_value, brickpi3.SensorError):
break
def read_sensor(brick, port, sensor_type):
try:
brick.set_sensor_type(port, sensor_type)
time.sleep(0.01)
return brick.get_sensor(port)
except brickpi3.SensorError as error:
print("error infrared", error)
return error
if __name__ == '__main__':
print('for local testing read 100 infrared readings from port 1')
brick = brickpi3.BrickPi3()
readings = goless.chan()
print('start infrared sensor')
start_infrared_sensor(brick, brick.PORT_2, readings)
for i in range(100):
case, val = goless.select([goless.rcase(readings)])
print(case, val)
print('100 reading are done, time to clean and exit')
brick.reset_all()
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_deadlock_if_no_goroutines(self):
with self.assertRaises(goless.Deadlock):
goless.select(goless.rcase(goless.chan()))
