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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 CurrentThreadScheduler
class TestCurrentThreadScheduler(unittest.TestCase):
def test_currentthread_singleton(self):
scheduler = [
CurrentThreadScheduler(),
CurrentThreadScheduler.singleton(),
CurrentThreadScheduler.singleton(),
]
assert scheduler[0] is not scheduler[1]
assert scheduler[1] is scheduler[2]
gate = [threading.Semaphore(0), threading.Semaphore(0)]
scheduler = [None, None]
def run(idx):
scheduler[idx] = CurrentThreadScheduler.singleton()
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 not scheduler[1]
def test_currentthread_extend(self):
class MyScheduler(CurrentThreadScheduler):
pass
scheduler = [
MyScheduler(),
MyScheduler.singleton(),
MyScheduler.singleton(),
CurrentThreadScheduler.singleton(),
]
assert scheduler[0] is not scheduler[1]
assert scheduler[1] is scheduler[2]
assert scheduler[1] is not scheduler[3]
def test_currentthread_now(self):
scheduler = CurrentThreadScheduler()
diff = scheduler.now - default_now()
assert abs(diff) < timedelta(milliseconds=5)
def test_currentthread_now_units(self):
scheduler = CurrentThreadScheduler()
diff = scheduler.now
sleep(1.1)
diff = scheduler.now - diff
assert timedelta(milliseconds=1000) < diff < timedelta(milliseconds=1300)
def test_currentthread_schedule(self):
scheduler = CurrentThreadScheduler()
ran = False
def action(scheduler, state=None):
nonlocal ran
ran = True
scheduler.schedule(action)
assert ran is True
def test_currentthread_schedule_block(self):
scheduler = CurrentThreadScheduler()
ran = False
def action(scheduler, state=None):
nonlocal ran
ran = True
t = scheduler.now
scheduler.schedule_relative(0.2, action)
t = scheduler.now - t
assert ran is True
assert t >= timedelta(seconds=0.2)
def test_currentthread_schedule_error(self):
scheduler = CurrentThreadScheduler()
class MyException(Exception):
pass
def action(scheduler, state=None):
raise MyException()
with pytest.raises(MyException):
scheduler.schedule(action)
def test_currentthread_schedule_nested(self):
scheduler = CurrentThreadScheduler()
ran = False
def action(scheduler, state=None):
def inner_action(scheduler, state=None):
nonlocal ran
ran = True
return scheduler.schedule(inner_action)
scheduler.schedule(action)
assert ran is True
def test_currentthread_schedule_nested_order(self):
scheduler = CurrentThreadScheduler()
tests = []
def outer(scheduler, state=None):
def action1(scheduler, state=None):
tests.append(1)
def action2(scheduler, state=None):
tests.append(2)
CurrentThreadScheduler().schedule(action2)
CurrentThreadScheduler().schedule(action1)
def action3(scheduler, state=None):
tests.append(3)
CurrentThreadScheduler().schedule(action3)
scheduler.ensure_trampoline(outer)
assert tests == [1, 2, 3]
def test_currentthread_singleton_schedule_nested_order(self):
scheduler = CurrentThreadScheduler.singleton()
tests = []
def outer(scheduler, state=None):
def action1(scheduler, state=None):
tests.append(1)
def action2(scheduler, state=None):
tests.append(2)
scheduler.schedule(action2)
scheduler.schedule(action1)
def action3(scheduler, state=None):
tests.append(3)
scheduler.schedule(action3)
scheduler.ensure_trampoline(outer)
assert tests == [1, 3, 2]
def test_currentthread_ensuretrampoline(self):
scheduler = CurrentThreadScheduler()
ran1, ran2 = False, False
def outer_action(scheduer, state=None):
def action1(scheduler, state=None):
nonlocal ran1
ran1 = True
scheduler.schedule(action1)
def action2(scheduler, state=None):
nonlocal ran2
ran2 = True
return scheduler.schedule(action2)
scheduler.ensure_trampoline(outer_action)
assert ran1 is True
assert ran2 is True
def test_currentthread_ensuretrampoline_nested(self):
scheduler = CurrentThreadScheduler()
ran1, ran2 = False, False
def outer_action(scheduler, state):
def inner_action1(scheduler, state):
nonlocal ran1
ran1 = True
scheduler.schedule(inner_action1)
def inner_action2(scheduler, state):
nonlocal ran2
ran2 = True
return scheduler.schedule(inner_action2)
scheduler.ensure_trampoline(outer_action)
assert ran1 is True
assert ran2 is True
def test_currentthread_ensuretrampoline_and_cancel(self):
scheduler = CurrentThreadScheduler()
ran1, ran2 = False, False
def outer_action(scheduler, state):
def inner_action1(scheduler, state):
nonlocal ran1
ran1 = True
def inner_action2(scheduler, state):
nonlocal ran2
ran2 = True
d = scheduler.schedule(inner_action2)
d.dispose()
return scheduler.schedule(inner_action1)
scheduler.ensure_trampoline(outer_action)
assert ran1 is True
assert ran2 is False
def test_currentthread_ensuretrampoline_and_canceltimed(self):
scheduler = CurrentThreadScheduler()
ran1, ran2 = False, False
def outer_action(scheduler, state):
def inner_action1(scheduler, state):
nonlocal ran1
ran1 = True
def inner_action2(scheduler, state):
nonlocal ran2
ran2 = True
t = scheduler.now + timedelta(seconds=0.5)
d = scheduler.schedule_absolute(t, inner_action2)
d.dispose()
return scheduler.schedule(inner_action1)
scheduler.ensure_trampoline(outer_action)
assert ran1 is True
assert ran2 is False
|
