def test_scheduler(self):
s = MTScheduler()
csv = CSVLoader(get_dataset('bigfile'),index_col=False,header=None,scheduler=s)
smp = Sample(n=10,scheduler=s)
smp.input.df = csv.output.df
csv.scheduler().start()
sleep(1)
self.assertTrue(csv.scheduler().is_running())
smp2 = Sample(n=15, scheduler=s)
smp2.input.df = csv.output.df
def add_min():
m = Min(scheduler=s)
# Of course, sleeping here is a bad idea. this is to illustrate
# that add_min will be executed atomically by the scheduler.
# using a sleep outside of add_oneshot_tick_proc would lead to an inconsistent
# state.
#sleep(1)
m.input.df = smp2.output.df
prt = Print(scheduler=s)
prt.input.df = m.output.df
s.add_oneshot_tick_proc(add_min)
sleep(1)
self.assertTrue(s._runorder.index(smp.id) > s._runorder.index(csv.id))
self.assertTrue(s._runorder.index(smp2.id) > s._runorder.index(csv.id))
#self.assertTrue(s._runorder.index(m.id) > s._runorder.index(smp2.id))
s.stop()
s.join()
