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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 NewThreadScheduler
CI = os.getenv("CI") is not None
class TestNewThreadScheduler(unittest.TestCase):
def test_new_thread_now(self):
scheduler = NewThreadScheduler()
diff = scheduler.now - default_now()
assert abs(diff) < timedelta(milliseconds=5)
@pytest.mark.skipif(CI, reason="Flaky test in GitHub Actions")
def test_new_thread_now_units(self):
scheduler = NewThreadScheduler()
diff = scheduler.now
sleep(1.1)
diff = scheduler.now - diff
assert timedelta(milliseconds=1000) < diff < timedelta(milliseconds=1300)
def test_new_thread_schedule_action(self):
scheduler = NewThreadScheduler()
ran = False
def action(scheduler, state):
nonlocal ran
ran = True
scheduler.schedule(action)
sleep(0.1)
assert ran is True
def test_new_thread_schedule_action_due(self):
scheduler = NewThreadScheduler()
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_new_thread_schedule_action_cancel(self):
ran = False
scheduler = NewThreadScheduler()
def action(scheduler, state):
nonlocal ran
ran = True
d = scheduler.schedule_relative(timedelta(milliseconds=1), action)
d.dispose()
sleep(0.2)
assert ran is False
def test_new_thread_schedule_periodic(self):
scheduler = NewThreadScheduler()
gate = threading.Semaphore(0)
period = 0.05
counter = 3
def action(state: int):
nonlocal counter
if state:
counter -= 1
return state - 1
if counter == 0:
gate.release()
scheduler.schedule_periodic(period, action, counter)
gate.acquire()
assert counter == 0
def test_new_thread_schedule_periodic_cancel(self):
scheduler = NewThreadScheduler()
period = 0.1
counter = 4
def action(state: int):
nonlocal counter
if state:
counter -= 1
return state - 1
disp = scheduler.schedule_periodic(period, action, counter)
sleep(0.4)
disp.dispose()
assert 0 <= counter < 4
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