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import unittest
from datetime import datetime, timedelta
import pytest
from reactivex.scheduler.eventloop import GEventScheduler
gevent = pytest.importorskip("gevent")
class TestGEventScheduler(unittest.TestCase):
def test_gevent_schedule_now(self):
scheduler = GEventScheduler(gevent)
hub = gevent.get_hub()
diff = scheduler.now - datetime.utcfromtimestamp(hub.loop.now())
assert abs(diff) < timedelta(milliseconds=1)
def test_gevent_schedule_now_units(self):
scheduler = GEventScheduler(gevent)
diff = scheduler.now
gevent.sleep(0.1)
diff = scheduler.now - diff
assert timedelta(milliseconds=80) < diff < timedelta(milliseconds=180)
def test_gevent_schedule_action(self):
scheduler = GEventScheduler(gevent)
ran = False
def action(scheduler, state):
nonlocal ran
ran = True
scheduler.schedule(action)
gevent.sleep(0.1)
assert ran is True
def test_gevent_schedule_action_due(self):
scheduler = GEventScheduler(gevent)
starttime = datetime.now()
endtime = None
def action(scheduler, state):
nonlocal endtime
endtime = datetime.now()
scheduler.schedule_relative(0.2, action)
gevent.sleep(0.3)
assert endtime is not None
diff = endtime - starttime
assert diff > timedelta(seconds=0.18)
def test_gevent_schedule_action_cancel(self):
scheduler = GEventScheduler(gevent)
ran = False
def action(scheduler, state):
nonlocal ran
ran = True
d = scheduler.schedule_relative(0.01, action)
d.dispose()
gevent.sleep(0.1)
assert ran is False
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