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import os
import unittest
from datetime import datetime, timedelta
from time import sleep
import pytest
from reactivex.scheduler.eventloop import EventletScheduler
eventlet = pytest.importorskip("eventlet")
CI = os.getenv("CI") is not None
class TestEventletScheduler(unittest.TestCase):
@pytest.mark.skipif(CI, reason="Flaky test in GitHub Actions")
def test_eventlet_schedule_now(self):
scheduler = EventletScheduler(eventlet)
hub = eventlet.hubs.get_hub()
diff = scheduler.now - datetime.utcfromtimestamp(hub.clock())
assert abs(diff) < timedelta(milliseconds=1)
@pytest.mark.skipif(CI, reason="Flaky test in GitHub Actions")
def test_eventlet_schedule_now_units(self):
scheduler = EventletScheduler(eventlet)
diff = scheduler.now
sleep(0.1)
diff = scheduler.now - diff
assert timedelta(milliseconds=80) < diff < timedelta(milliseconds=180)
def test_eventlet_schedule_action(self):
scheduler = EventletScheduler(eventlet)
ran = False
def action(scheduler, state):
nonlocal ran
ran = True
scheduler.schedule(action)
eventlet.sleep(0.1)
assert ran is True
def test_eventlet_schedule_action_due(self):
scheduler = EventletScheduler(eventlet)
starttime = datetime.now()
endtime = None
def action(scheduler, state):
nonlocal endtime
endtime = datetime.now()
scheduler.schedule_relative(0.2, action)
eventlet.sleep(0.3)
assert endtime is not None
diff = endtime - starttime
assert diff > timedelta(seconds=0.18)
def test_eventlet_schedule_action_cancel(self):
scheduler = EventletScheduler(eventlet)
ran = False
def action(scheduler, state):
nonlocal ran
ran = True
d = scheduler.schedule_relative(1.0, action)
d.dispose()
eventlet.sleep(0.01)
assert ran is False
def test_eventlet_schedule_action_periodic(self):
scheduler = EventletScheduler(eventlet)
period = 0.05
counter = 3
def action(state):
nonlocal counter
if counter:
counter -= 1
scheduler.schedule_periodic(period, action)
eventlet.sleep(0.3)
assert counter == 0
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