pyqtgraph/pyqtgraph/tests/test_signalproxy.py
Dennis Göries 325a15a6ef
SignalProxy: Correct initialization without slot argument and tests (#1392)
* SignalProxy: Correct initialization without slot argument and provide tests

* Add missing slot is None case on disconnect

* Start new tests

* Exception block

* Test no module

* Different signal

* Debugging the signal connect

* Re initialize proxy after disconnect

* Add more test cases for blockSignal

* Change test case for signal count

* Give up for python 2 and pyside

* Exclude for Python 2.7 and PySide

* Convert float to integers in timer start period
2020-10-13 08:50:22 -07:00

154 lines
3.9 KiB
Python

import sys
import pytest
from ..Qt import QtCore
from ..Qt import QtGui
from ..Qt import QT_LIB, PYSIDE
from ..SignalProxy import SignalProxy
class Sender(QtCore.QObject):
signalSend = QtCore.Signal()
def __init__(self, parent=None):
super(Sender, self).__init__(parent)
class Receiver(QtCore.QObject):
def __init__(self, parent=None):
super(Receiver, self).__init__(parent)
self.counter = 0
def slotReceive(self):
self.counter += 1
@pytest.fixture
def qapp():
app = QtGui.QApplication.instance()
if app is None:
app = QtGui.QApplication(sys.argv)
yield app
app.processEvents(QtCore.QEventLoop.AllEvents, 100)
app.deleteLater()
def test_signal_proxy_slot(qapp):
"""Test the normal work mode of SignalProxy with `signal` and `slot`"""
sender = Sender(parent=qapp)
receiver = Receiver(parent=qapp)
proxy = SignalProxy(sender.signalSend, delay=0.0, rateLimit=0.6,
slot=receiver.slotReceive)
assert proxy.blockSignal is False
assert proxy is not None
assert sender is not None
assert receiver is not None
sender.signalSend.emit()
proxy.flush()
qapp.processEvents(QtCore.QEventLoop.AllEvents, 10)
assert receiver.counter > 0
del proxy
del sender
del receiver
@pytest.mark.skipif(QT_LIB == PYSIDE and sys.version_info < (2, 8),
reason="Crashing on PySide and Python 2.7")
def test_signal_proxy_disconnect_slot(qapp):
"""Test the disconnect of SignalProxy with `signal` and `slot`"""
sender = Sender(parent=qapp)
receiver = Receiver(parent=qapp)
proxy = SignalProxy(sender.signalSend, delay=0.0, rateLimit=0.6,
slot=receiver.slotReceive)
assert proxy.blockSignal is False
assert proxy is not None
assert sender is not None
assert receiver is not None
assert proxy.slot is not None
proxy.disconnect()
assert proxy.slot is None
assert proxy.blockSignal is True
sender.signalSend.emit()
proxy.flush()
qapp.processEvents(QtCore.QEventLoop.AllEvents, 10)
assert receiver.counter == 0
del proxy
del sender
del receiver
def test_signal_proxy_no_slot_start(qapp):
"""Test the connect mode of SignalProxy without slot at start`"""
sender = Sender(parent=qapp)
receiver = Receiver(parent=qapp)
proxy = SignalProxy(sender.signalSend, delay=0.0, rateLimit=0.6)
assert proxy.blockSignal is True
assert proxy is not None
assert sender is not None
assert receiver is not None
sender.signalSend.emit()
proxy.flush()
qapp.processEvents(QtCore.QEventLoop.AllEvents, 10)
assert receiver.counter == 0
# Start a connect
proxy.connectSlot(receiver.slotReceive)
assert proxy.blockSignal is False
sender.signalSend.emit()
proxy.flush()
qapp.processEvents(QtCore.QEventLoop.AllEvents, 10)
assert receiver.counter > 0
# An additional connect should raise an AssertionError
with pytest.raises(AssertionError):
proxy.connectSlot(receiver.slotReceive)
del proxy
del sender
del receiver
def test_signal_proxy_slot_block(qapp):
"""Test the block mode of SignalProxy with `signal` and `slot`"""
sender = Sender(parent=qapp)
receiver = Receiver(parent=qapp)
proxy = SignalProxy(sender.signalSend, delay=0.0, rateLimit=0.6,
slot=receiver.slotReceive)
assert proxy.blockSignal is False
assert proxy is not None
assert sender is not None
assert receiver is not None
with proxy.block():
sender.signalSend.emit()
sender.signalSend.emit()
sender.signalSend.emit()
proxy.flush()
qapp.processEvents(QtCore.QEventLoop.AllEvents, 10)
assert receiver.counter == 0
sender.signalSend.emit()
proxy.flush()
qapp.processEvents(QtCore.QEventLoop.AllEvents, 10)
assert receiver.counter > 0
del proxy
del sender
del receiver