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Diffstat (limited to 'sources/shiboken2/tests/samplebinding/privatector_test.py')
-rw-r--r-- | sources/shiboken2/tests/samplebinding/privatector_test.py | 84 |
1 files changed, 84 insertions, 0 deletions
diff --git a/sources/shiboken2/tests/samplebinding/privatector_test.py b/sources/shiboken2/tests/samplebinding/privatector_test.py new file mode 100644 index 000000000..471f735cb --- /dev/null +++ b/sources/shiboken2/tests/samplebinding/privatector_test.py @@ -0,0 +1,84 @@ +#!/usr/bin/env python +# -*- coding: utf-8 -*- +# +############################################################################# +## +## 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 a class with only a private constructor.''' + +import gc +import sys +import unittest + +from sample import PrivateCtor + + +class PrivateCtorTest(unittest.TestCase): + '''Test case for PrivateCtor class''' + + def testPrivateCtorInstanciation(self): + '''Test if instanciation of class with a private constructor raises an exception.''' + self.assertRaises(TypeError, PrivateCtor) + + def testPrivateCtorInheritance(self): + '''Test if inheriting from PrivateCtor raises an exception.''' + def inherit(): + class Foo(PrivateCtor): + pass + self.assertRaises(TypeError, inherit) + + def testPrivateCtorInstanceMethod(self): + '''Test if PrivateCtor.instance() method return the proper singleton.''' + pd1 = PrivateCtor.instance() + calls = pd1.instanceCalls() + self.assertEqual(type(pd1), PrivateCtor) + pd2 = PrivateCtor.instance() + self.assertEqual(pd2, pd1) + self.assertEqual(pd2.instanceCalls(), calls + 1) + + def testPrivateCtorRefCounting(self): + '''Test refcounting of the singleton returned by PrivateCtor.instance().''' + pd1 = PrivateCtor.instance() + calls = pd1.instanceCalls() + refcnt = sys.getrefcount(pd1) + pd2 = PrivateCtor.instance() + self.assertEqual(pd2.instanceCalls(), calls + 1) + self.assertEqual(sys.getrefcount(pd2), sys.getrefcount(pd1)) + self.assertEqual(sys.getrefcount(pd2), refcnt + 1) + del pd1 + self.assertEqual(sys.getrefcount(pd2), refcnt) + del pd2 + gc.collect() + pd3 = PrivateCtor.instance() + self.assertEqual(type(pd3), PrivateCtor) + self.assertEqual(pd3.instanceCalls(), calls + 2) + self.assertEqual(sys.getrefcount(pd3), refcnt) + +if __name__ == '__main__': + unittest.main() + |