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import unittest
import pytest
from reactivex.internal import ArgumentOutOfRangeException
from reactivex.internal.constants import DELTA_ZERO, UTC_ZERO
from reactivex.scheduler import VirtualTimeScheduler
class VirtualSchedulerTestScheduler(VirtualTimeScheduler):
def add(self, absolute, relative):
return absolute + relative
class TestVirtualTimeScheduler(unittest.TestCase):
def test_virtual_now_noarg(self):
scheduler = VirtualSchedulerTestScheduler()
assert scheduler.clock == 0.0
assert scheduler.now == UTC_ZERO
def test_virtual_now_float(self):
scheduler = VirtualSchedulerTestScheduler(0.0)
assert scheduler.clock == 0.0
assert scheduler.now == UTC_ZERO
def test_virtual_now_timedelta(self):
scheduler = VirtualSchedulerTestScheduler(DELTA_ZERO)
assert scheduler.clock == DELTA_ZERO
assert scheduler.now == UTC_ZERO
def test_virtual_now_datetime(self):
scheduler = VirtualSchedulerTestScheduler(UTC_ZERO)
assert scheduler.clock == UTC_ZERO
assert scheduler.now == UTC_ZERO
def test_virtual_schedule_action(self):
scheduler = VirtualSchedulerTestScheduler()
ran = False
def action(scheduler, state):
nonlocal ran
ran = True
scheduler.schedule(action)
scheduler.start()
assert ran is True
def test_virtual_schedule_action_error(self):
scheduler = VirtualSchedulerTestScheduler()
class MyException(Exception):
pass
def action(scheduler, state):
raise MyException()
with pytest.raises(MyException):
scheduler.schedule(action)
scheduler.start()
def test_virtual_schedule_sleep_error(self):
scheduler = VirtualSchedulerTestScheduler()
with pytest.raises(ArgumentOutOfRangeException):
scheduler.sleep(-1)
def test_virtual_schedule_advance_clock_error(self):
scheduler = VirtualSchedulerTestScheduler()
with pytest.raises(ArgumentOutOfRangeException):
scheduler.advance_to(scheduler._clock - 1)
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