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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.
+##
+## $QT_END_LICENSE$
+##
+#############################################################################
+
+import os, sys
+sys.path.insert(0, os.path.join("..", "pysidetest"))
+
+import unittest
+from PySide2.QtCore import *
+from testbinding import TestObject
+
+
+class Foo(QObject):
+ bar = Signal()
+
+class TestDisconnect(unittest.TestCase):
+ def theSlot1(self):
+ self.called1 = True
+
+ def theSlot2(self):
+ self.called2 = True
+
+ def testIt(self):
+ self.called1 = False
+ self.called2 = False
+ f = Foo()
+ f.bar.connect(self.theSlot1)
+ f.bar.connect(self.theSlot2)
+ f.bar.emit()
+ self.assertTrue(self.called1)
+ self.assertTrue(self.called2)
+
+ self.called1 = False
+ self.called2 = False
+ f.bar.disconnect()
+ f.bar.emit()
+ self.assertFalse(self.called1)
+ self.assertFalse(self.called2)
+
+ def testDuringCallback(self):
+ """ Test to see if the C++ object for a connection is accessed after the
+ method returns. This causes a segfault if the memory that was used by the
+ C++ object has been reused. """
+
+ self.called = False
+ obj = TestObject(0)
+ def callback():
+ obj.signalWithDefaultValue.disconnect(callback)
+
+ # Connect more callbacks to try to overwrite memory
+ for i in range(1000):
+ obj.signalWithDefaultValue.connect(lambda: None)
+
+ self.called = True
+
+ # A non-None return value is needed
+ return True
+ obj.signalWithDefaultValue.connect(callback)
+ obj.signalWithDefaultValue.emit()
+ self.assertTrue(self.called)
+
+
+if __name__ == '__main__':
+ unittest.main()