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import os
import threading
import unittest
from datetime import timedelta
from time import sleep
import pytest
from reactivex.disposable import Disposable
from reactivex.internal.basic import default_now
from reactivex.internal.constants import DELTA_ZERO
from reactivex.internal.exceptions import WouldBlockException
from reactivex.scheduler import ImmediateScheduler
CI = os.getenv("CI") is not None
class TestImmediateScheduler(unittest.TestCase):
def test_immediate_singleton(self):
scheduler = [ImmediateScheduler(), ImmediateScheduler.singleton()]
assert scheduler[0] is scheduler[1]
gate = [threading.Semaphore(0), threading.Semaphore(0)]
scheduler = [None, None]
def run(idx):
scheduler[idx] = ImmediateScheduler()
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_immediate_extend(self):
class MyScheduler(ImmediateScheduler):
pass
scheduler = [
MyScheduler(),
MyScheduler.singleton(),
ImmediateScheduler.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_immediate_now(self):
scheduler = ImmediateScheduler()
diff = scheduler.now - default_now()
assert abs(diff) <= timedelta(milliseconds=1)
@pytest.mark.skipif(CI, reason="Flaky test in GitHub Actions")
def test_immediate_now_units(self):
scheduler = ImmediateScheduler()
diff = scheduler.now
sleep(1.1)
diff = scheduler.now - diff
assert timedelta(milliseconds=1000) < diff < timedelta(milliseconds=1300)
def test_immediate_scheduleaction(self):
scheduler = ImmediateScheduler()
ran = False
def action(scheduler, state=None):
nonlocal ran
ran = True
scheduler.schedule(action)
assert ran
def test_immediate_schedule_action_error(self):
scheduler = ImmediateScheduler()
class MyException(Exception):
pass
def action(scheduler, state=None):
raise MyException()
with pytest.raises(MyException):
return scheduler.schedule(action)
def test_immediate_schedule_action_due_error(self):
scheduler = ImmediateScheduler()
ran = False
def action(scheduler, state=None):
nonlocal ran
ran = True
with pytest.raises(WouldBlockException):
scheduler.schedule_relative(0.1, action)
assert ran is False
def test_immediate_simple1(self):
scheduler = ImmediateScheduler()
xx = 0
def action(scheduler, state=None):
nonlocal xx
xx = state
return Disposable()
scheduler.schedule(action, 42)
assert xx == 42
def test_immediate_simple2(self):
scheduler = ImmediateScheduler()
xx = 0
def action(scheduler, state=None):
nonlocal xx
xx = state
return Disposable()
scheduler.schedule_absolute(default_now(), action, 42)
assert xx == 42
def test_immediate_simple3(self):
scheduler = ImmediateScheduler()
xx = 0
def action(scheduler, state=None):
nonlocal xx
xx = state
return Disposable()
scheduler.schedule_relative(DELTA_ZERO, action, 42)
assert xx == 42
def test_immediate_recursive1(self):
scheduler = ImmediateScheduler()
xx = 0
yy = 0
def action(scheduler, state=None):
nonlocal xx
xx = state
def inner_action(scheduler, state=None):
nonlocal yy
yy = state
return Disposable()
return scheduler.schedule(inner_action, 43)
scheduler.schedule(action, 42)
assert xx == 42
assert yy == 43
def test_immediate_recursive2(self):
scheduler = ImmediateScheduler()
xx = 0
yy = 0
def action(scheduler, state=None):
nonlocal xx
xx = state
def inner_action(scheduler, state=None):
nonlocal yy
yy = state
return Disposable()
return scheduler.schedule_absolute(default_now(), inner_action, 43)
scheduler.schedule_absolute(default_now(), action, 42)
assert xx == 42
assert yy == 43
def test_immediate_recursive3(self):
scheduler = ImmediateScheduler()
xx = 0
yy = 0
def action(scheduler, state=None):
nonlocal xx
xx = state
def inner_action(scheduler, state):
nonlocal yy
yy = state
return Disposable()
return scheduler.schedule_relative(DELTA_ZERO, inner_action, 43)
scheduler.schedule_relative(DELTA_ZERO, action, 42)
assert xx == 42
assert yy == 43
|
