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import asyncio
import os
import unittest
from datetime import datetime, timedelta
import pytest
from reactivex.scheduler.eventloop import AsyncIOScheduler
CI = os.getenv("CI") is not None
class TestAsyncIOScheduler(unittest.TestCase):
@pytest.mark.skipif(CI, reason="Flaky test in GitHub Actions")
def test_asyncio_schedule_now(self):
loop = asyncio.get_event_loop()
scheduler = AsyncIOScheduler(loop)
diff = scheduler.now - datetime.utcfromtimestamp(loop.time())
assert abs(diff) < timedelta(milliseconds=2) # NOTE: may take 1 ms in CI
@pytest.mark.skipif(CI, reason="Test is flaky in GitHub Actions")
def test_asyncio_schedule_now_units(self):
loop = asyncio.get_event_loop()
scheduler = AsyncIOScheduler(loop)
diff = scheduler.now
yield from asyncio.sleep(0.1)
diff = scheduler.now - diff
assert timedelta(milliseconds=80) < diff < timedelta(milliseconds=180)
def test_asyncio_schedule_action(self):
loop = asyncio.get_event_loop()
async def go():
scheduler = AsyncIOScheduler(loop)
ran = False
def action(scheduler, state):
nonlocal ran
ran = True
scheduler.schedule(action)
await asyncio.sleep(0.1)
assert ran is True
loop.run_until_complete(go())
def test_asyncio_schedule_action_due(self):
loop = asyncio.get_event_loop()
async def go():
scheduler = AsyncIOScheduler(loop)
starttime = loop.time()
endtime = None
def action(scheduler, state):
nonlocal endtime
endtime = loop.time()
scheduler.schedule_relative(0.2, action)
await asyncio.sleep(0.3)
assert endtime is not None
diff = endtime - starttime
assert diff > 0.18
loop.run_until_complete(go())
def test_asyncio_schedule_action_cancel(self):
loop = asyncio.get_event_loop()
async def go():
ran = False
scheduler = AsyncIOScheduler(loop)
def action(scheduler, state):
nonlocal ran
ran = True
d = scheduler.schedule_relative(0.05, action)
d.dispose()
await asyncio.sleep(0.3)
assert ran is False
loop.run_until_complete(go())
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