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'''Basic test cases for QGraphicsScene'''
import unittest
import gc
from PySide.QtCore import QPointF
from PySide.QtGui import QApplication, QPushButton, QPolygonF, QPixmap
from PySide.QtGui import QGraphicsScene, QPainterPath
from PySide.QtGui import QGraphicsEllipseItem, QGraphicsLineItem
from PySide.QtGui import QGraphicsPathItem, QGraphicsPixmapItem
from PySide.QtGui import QGraphicsPolygonItem, QGraphicsRectItem
from PySide.QtGui import QGraphicsSimpleTextItem, QGraphicsTextItem
from PySide.QtGui import QGraphicsProxyWidget
from helper import UsesQApplication
class Constructor(unittest.TestCase):
'''QGraphicsScene constructor'''
def testConstructor(self):
#QGraphicsScene constructor
obj = QGraphicsScene()
self.assert_(isinstance(obj, QGraphicsScene))
class ConstructorWithRect(unittest.TestCase):
'''QGraphicsScene qrect constructor and related sizes'''
def setUp(self):
#Acquire resources
# PyQt4 doesn't accept a QRect as argument to constructor
self.scene = QGraphicsScene(0, 200, 150, 175)
def tearDown(self):
#Release resources
del self.scene
def testHeight(self):
#QGraphicsScene.height()
self.assertEqual(self.scene.height(), 175)
def testWidth(self):
#QGraphicsScene.width()
self.assertEqual(self.scene.width(), 150)
class AddItem(UsesQApplication):
'''Tests for QGraphicsScene.add*'''
qapplication = True
def setUp(self):
#Acquire resources
super(AddItem, self).setUp()
self.scene = QGraphicsScene()
# While the scene does not inherits from QWidget, requires
# an application to make the internals work.
def tearDown(self):
#Release resources
del self.scene
super(AddItem, self).tearDown()
def testEllipse(self):
#QGraphicsScene.addEllipse
item = self.scene.addEllipse(100, 100, 100, 100)
self.assert_(isinstance(item, QGraphicsEllipseItem))
def testLine(self):
#QGraphicsScene.addLine
item = self.scene.addLine(100, 100, 200, 200)
self.assert_(isinstance(item, QGraphicsLineItem))
def testPath(self):
#QGraphicsScene.addPath
item = self.scene.addPath(QPainterPath())
self.assert_(isinstance(item, QGraphicsPathItem))
def testPixmap(self):
#QGraphicsScene.addPixmap
item = self.scene.addPixmap(QPixmap())
self.assert_(isinstance(item, QGraphicsPixmapItem))
def testPolygon(self):
#QGraphicsScene.addPolygon
points = [QPointF(0, 0), QPointF(100, 100), QPointF(0, 100)]
item = self.scene.addPolygon(QPolygonF(points))
self.assert_(isinstance(item, QGraphicsPolygonItem))
def testRect(self):
#QGraphicsScene.addRect
item = self.scene.addRect(100, 100, 100, 100)
self.assert_(isinstance(item, QGraphicsRectItem))
def testSimpleText(self):
#QGraphicsScene.addSimpleText
item = self.scene.addSimpleText('Monty Python 42')
self.assert_(isinstance(item, QGraphicsSimpleTextItem))
def testText(self):
#QGraphicsScene.addText
item = self.scene.addText('Monty Python 42')
self.assert_(isinstance(item, QGraphicsTextItem))
def testWidget(self):
#QGraphicsScene.addWidget
# XXX: printing some X11 error when using under PyQt4
item = self.scene.addWidget(QPushButton())
self.assert_(isinstance(item, QGraphicsProxyWidget))
class ItemRetrieve(UsesQApplication):
'''Tests for QGraphicsScene item retrieval methods'''
qapplication = True
def setUp(self):
#Acquire resources
super(ItemRetrieve, self).setUp()
self.scene = QGraphicsScene()
self.topleft = QGraphicsRectItem(0, 0, 100, 100)
self.topright = QGraphicsRectItem(100, 0, 100, 100)
self.bottomleft = QGraphicsRectItem(0, 100, 100, 100)
self.bottomright = QGraphicsRectItem(100, 100, 100, 100)
self.items = [self.topleft, self.topright, self.bottomleft,
self.bottomright]
for item in self.items:
self.scene.addItem(item)
def tearDown(self):
#Release resources
del self.scene
super(ItemRetrieve, self).tearDown()
def testItems(self):
#QGraphicsScene.items()
items = self.scene.items()
self.assertEqual(items.sort(), self.items.sort())
def testItemAt(self):
#QGraphicsScene.itemAt()
self.assertEqual(self.scene.itemAt(50, 50), self.topleft)
self.assertEqual(self.scene.itemAt(150, 50), self.topright)
self.assertEqual(self.scene.itemAt(50, 150), self.bottomleft)
self.assertEqual(self.scene.itemAt(150, 150), self.bottomright)
class TestGraphicsGroup(UsesQApplication):
def testIt(self):
scene = QGraphicsScene()
i1 = QGraphicsRectItem()
scene.addItem(i1)
i2 = QGraphicsRectItem(i1)
i3 = QGraphicsRectItem()
i4 = QGraphicsRectItem()
group = scene.createItemGroup((i2, i3, i4))
scene.removeItem(i1)
del i1 # this shouldn't delete i2
self.assertEqual(i2.scene(), scene)
scene.destroyItemGroup(group)
self.assertRaises(RuntimeError, group.type)
if __name__ == '__main__':
unittest.main()
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