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Diffstat (limited to 'sources/pyside2/tests/QtWidgets/reference_count_test.py')
-rw-r--r-- | sources/pyside2/tests/QtWidgets/reference_count_test.py | 99 |
1 files changed, 99 insertions, 0 deletions
diff --git a/sources/pyside2/tests/QtWidgets/reference_count_test.py b/sources/pyside2/tests/QtWidgets/reference_count_test.py new file mode 100644 index 000000000..9fa51f161 --- /dev/null +++ b/sources/pyside2/tests/QtWidgets/reference_count_test.py @@ -0,0 +1,99 @@ +############################################################################# +## +## 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() |