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import os
import threading
import unittest
from datetime import timedelta
from time import sleep
import pytest
from reactivex.internal.basic import default_now
from reactivex.scheduler import TimeoutScheduler
CI = os.getenv("CI") is not None
class TestTimeoutScheduler(unittest.TestCase):
def test_timeout_singleton(self):
scheduler = [TimeoutScheduler(), TimeoutScheduler.singleton()]
assert scheduler[0] is scheduler[1]
gate = [threading.Semaphore(0), threading.Semaphore(0)]
scheduler = [None, None]
def run(idx):
scheduler[idx] = TimeoutScheduler()
gate[idx].release()
for idx in (0, 1):
threading.Thread(target=run, args=(idx,)).start()
gate[idx].acquire()
assert scheduler[0] is not None
assert scheduler[1] is not None
assert scheduler[0] is scheduler[1]
def test_timeout_extend(self):
class MyScheduler(TimeoutScheduler):
pass
scheduler = [
MyScheduler(),
MyScheduler.singleton(),
TimeoutScheduler.singleton(),
]
assert scheduler[0] is scheduler[1]
assert scheduler[0] is not scheduler[2]
@pytest.mark.skipif(CI, reason="Flaky test in GitHub Actions")
def test_timeout_now(self):
scheduler = TimeoutScheduler()
diff = scheduler.now - default_now()
assert abs(diff) < timedelta(milliseconds=1)
@pytest.mark.skipif(CI, reason="Flaky test in GitHub Actions")
def test_timeout_now_units(self):
scheduler = TimeoutScheduler()
diff = scheduler.now
sleep(1.1)
diff = scheduler.now - diff
assert timedelta(milliseconds=1000) < diff < timedelta(milliseconds=1300)
def test_timeout_schedule_action(self):
scheduler = TimeoutScheduler()
ran = False
def action(scheduler, state):
nonlocal ran
ran = True
scheduler.schedule(action)
sleep(0.1)
assert ran is True
def test_timeout_schedule_action_due(self):
scheduler = TimeoutScheduler()
starttime = default_now()
endtime = None
def action(scheduler, state):
nonlocal endtime
endtime = default_now()
scheduler.schedule_relative(timedelta(milliseconds=200), action)
sleep(0.4)
assert endtime is not None
diff = endtime - starttime
assert diff > timedelta(milliseconds=180)
def test_timeout_schedule_action_cancel(self):
ran = False
scheduler = TimeoutScheduler()
def action(scheduler, state):
nonlocal ran
ran = True
d = scheduler.schedule_relative(timedelta(milliseconds=300), action)
d.dispose()
sleep(0.1)
assert ran is False
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