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import threading
from datetime import timedelta
from time import sleep
import pytest
from reactivex.internal.basic import default_now
from reactivex.scheduler.mainloop import QtScheduler
QtCore = pytest.importorskip("PyQt5.QtCore")
@pytest.fixture(scope="module")
def app():
# share qt application among all tests
app = QtCore.QCoreApplication([])
yield app
# teardown
class TestQtSchedulerPyQt5:
def test_pyqt5_schedule_now(self):
scheduler = QtScheduler(QtCore)
diff = scheduler.now - default_now()
assert abs(diff) < timedelta(milliseconds=1)
def test_pyqt5_schedule_now_units(self):
scheduler = QtScheduler(QtCore)
diff = scheduler.now
sleep(0.1)
diff = scheduler.now - diff
assert timedelta(milliseconds=80) < diff < timedelta(milliseconds=180)
def test_pyqt5_schedule_action(self, app):
scheduler = QtScheduler(QtCore)
gate = threading.Semaphore(0)
ran = False
def action(scheduler, state):
nonlocal ran
ran = True
scheduler.schedule(action)
def done():
app.quit()
gate.release()
QtCore.QTimer.singleShot(50, done)
app.exec_()
gate.acquire()
assert ran is True
def test_pyqt5_schedule_action_due_relative(self, app):
scheduler = QtScheduler(QtCore)
gate = threading.Semaphore(0)
starttime = default_now()
endtime = None
def action(scheduler, state):
nonlocal endtime
endtime = default_now()
scheduler.schedule_relative(0.2, action)
def done():
app.quit()
gate.release()
QtCore.QTimer.singleShot(300, done)
app.exec_()
gate.acquire()
assert endtime is not None
diff = endtime - starttime
assert diff > timedelta(milliseconds=180)
def test_pyqt5_schedule_action_due_absolute(self, app):
scheduler = QtScheduler(QtCore)
gate = threading.Semaphore(0)
starttime = default_now()
endtime = None
def action(scheduler, state):
nonlocal endtime
endtime = default_now()
scheduler.schedule_absolute(starttime + timedelta(seconds=0.2), action)
def done():
app.quit()
gate.release()
QtCore.QTimer.singleShot(300, done)
app.exec_()
gate.acquire()
assert endtime is not None
diff = endtime - starttime
assert diff > timedelta(milliseconds=180)
def test_pyqt5_schedule_action_cancel(self, app):
ran = False
scheduler = QtScheduler(QtCore)
gate = threading.Semaphore(0)
def action(scheduler, state):
nonlocal ran
ran = True
d = scheduler.schedule_relative(0.1, action)
d.dispose()
def done():
app.quit()
gate.release()
QtCore.QTimer.singleShot(300, done)
app.exec_()
gate.acquire()
assert ran is False
def test_pyqt5_schedule_action_periodic(self, app):
scheduler = QtScheduler(QtCore)
gate = threading.Semaphore(0)
period = 0.050
counter = 3
def action(state):
nonlocal counter
if state:
counter -= 1
return state - 1
scheduler.schedule_periodic(period, action, counter)
def done():
app.quit()
gate.release()
QtCore.QTimer.singleShot(300, done)
app.exec_()
gate.acquire()
assert counter == 0
def test_pyqt5_schedule_periodic_cancel(self, app):
scheduler = QtScheduler(QtCore)
gate = threading.Semaphore(0)
period = 0.05
counter = 3
def action(state):
nonlocal counter
if state:
counter -= 1
return state - 1
disp = scheduler.schedule_periodic(period, action, counter)
def dispose():
disp.dispose()
QtCore.QTimer.singleShot(100, dispose)
def done():
app.quit()
gate.release()
QtCore.QTimer.singleShot(300, done)
app.exec_()
gate.acquire()
assert 0 < counter < 3
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