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+#############################################################################
+##
+## Copyright (C) 2016 The Qt Company Ltd.
+## Contact: https://www.qt.io/licensing/
+##
+## This file is part of the test suite of PySide2.
+##
+## $QT_BEGIN_LICENSE:GPL-EXCEPT$
+## Commercial License Usage
+## Licensees holding valid commercial Qt licenses may use this file in
+## accordance with the commercial license agreement provided with the
+## Software or, alternatively, in accordance with the terms contained in
+## a written agreement between you and The Qt Company. For licensing terms
+## and conditions see https://www.qt.io/terms-conditions. For further
+## information use the contact form at https://www.qt.io/contact-us.
+##
+## GNU General Public License Usage
+## Alternatively, this file may be used under the terms of the GNU
+## General Public License version 3 as published by the Free Software
+## Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
+## included in the packaging of this file. Please review the following
+## information to ensure the GNU General Public License requirements will
+## be met: https://www.gnu.org/licenses/gpl-3.0.html.
+##
+## $QT_END_LICENSE$
+##
+#############################################################################
+
+'''Test cases for Reference count when the object is created in c++ side'''
+
+import unittest
+
+import sys
+import weakref
+import gc
+
+
+from PySide2.QtCore import Qt, QPointF
+from PySide2.QtGui import QPolygonF
+from PySide2.QtWidgets import QApplication, QGraphicsScene, QGraphicsRectItem, QGraphicsPolygonItem, QGraphicsRectItem
+
+from helper import UsesQApplication
+
+destroyedRect = False
+destroyedPol = False
+
+def rect_del(o):
+ global destroyedRect
+ destroyedRect = True
+
+def pol_del(o):
+ global destroyedPol
+ destroyedPol = True
+
+class ReferenceCount(UsesQApplication):
+
+ def setUp(self):
+ super(ReferenceCount, self).setUp()
+ self.scene = QGraphicsScene()
+
+ def tearDown(self):
+ super(ReferenceCount, self).tearDown()
+
+ def beforeTest(self):
+ points = [QPointF(0, 0), QPointF(100, 100), QPointF(0, 100)]
+ pol = self.scene.addPolygon(QPolygonF(points))
+ self.assertTrue(isinstance(pol, QGraphicsPolygonItem))
+ self.wrp = weakref.ref(pol, pol_del)
+
+ #refcount need be 3 because one ref for QGraphicsScene, and one to rect obj
+ self.assertEqual(sys.getrefcount(pol), 3)
+
+ def testReferenceCount(self):
+ global destroyedRect
+ global destroyedPol
+
+ self.beforeTest()
+
+ rect = self.scene.addRect(10.0, 10.0, 10.0, 10.0)
+ self.assertTrue(isinstance(rect, QGraphicsRectItem))
+
+ self.wrr = weakref.ref(rect, rect_del)
+
+ #refcount need be 3 because one ref for QGraphicsScene, and one to rect obj
+ self.assertEqual(sys.getrefcount(rect), 3)
+
+ del rect
+ #not destroyed because one ref continue in QGraphicsScene
+ self.assertEqual(destroyedRect, False)
+ self.assertEqual(destroyedPol, False)
+
+ del self.scene
+
+ #QGraphicsScene was destroyed and this destroy internal ref to rect
+ self.assertEqual(destroyedRect, True)
+ self.assertEqual(destroyedPol, True)
+
+if __name__ == '__main__':
+ unittest.main()