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'''Test paint event override in python'''
import unittest
from PySide.QtCore import QTimerEvent
from PySide.QtGui import QApplication, QWidget
from helper import UsesQApplication
class MyWidget(QWidget):
'''Sample widget'''
def __init__(self, app=None):
#Creates a new widget
if app is None:
app = QApplication([])
super(MyWidget, self).__init__()
self.app = app
self.runs = 0
self.max_runs = 5
self.paint_event_called = False
def timerEvent(self, event):
#Timer event method
self.runs += 1
if self.runs == self.max_runs:
self.app.quit()
if not isinstance(event, QTimerEvent):
raise TypeError('Invalid event type. Must be QTimerEvent')
def paintEvent(self, event):
#Empty paint event method
# XXX: should be using super here, but somehow PyQt4
# complains about paintEvent not present in super
QWidget.paintEvent(self, event)
self.paint_event_called = True
class PaintEventOverride(UsesQApplication):
'''Test case for overriding QWidget.paintEvent'''
qapplication = True
def setUp(self):
#Acquire resources
super(PaintEventOverride, self).setUp()
self.widget = MyWidget(self.app)
def tearDown(self):
#Release resources
del self.widget
super(PaintEventOverride, self).tearDown()
def testPaintEvent(self):
#Test QWidget.paintEvent override
timer_id = self.widget.startTimer(100)
self.widget.show()
self.app.exec_()
self.widget.killTimer(timer_id)
self.assert_(self.widget.paint_event_called)
self.assertEqual(self.widget.runs, 5)
if __name__ == '__main__':
unittest.main()
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