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-rw-r--r--sources/pyside6/tests/signals/slot_reference_count_test.py70
1 files changed, 70 insertions, 0 deletions
diff --git a/sources/pyside6/tests/signals/slot_reference_count_test.py b/sources/pyside6/tests/signals/slot_reference_count_test.py
new file mode 100644
index 000000000..9d5c73652
--- /dev/null
+++ b/sources/pyside6/tests/signals/slot_reference_count_test.py
@@ -0,0 +1,70 @@
+# Copyright (C) 2022 The Qt Company Ltd.
+# SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
+
+''' Forced disconnection: Delete one end of the signal connection'''
+
+import os
+import sys
+import unittest
+
+from pathlib import Path
+sys.path.append(os.fspath(Path(__file__).resolve().parents[1]))
+from init_paths import init_test_paths
+init_test_paths(False)
+
+from PySide6.QtCore import QObject, Signal
+
+
+class Dummy(QObject):
+ foo = Signal()
+
+ def dispatch(self):
+ self.foo.emit()
+
+
+class PythonSignalRefCount(unittest.TestCase):
+
+ def setUp(self):
+ self.emitter = Dummy()
+
+ def tearDown(self):
+ self.emitter
+
+ @unittest.skipUnless(hasattr(sys, "getrefcount"), f"{sys.implementation.name} has no refcount")
+ def testRefCount(self):
+ def cb(*args):
+ pass
+
+ self.assertEqual(sys.getrefcount(cb), 2)
+
+ self.emitter.foo.connect(cb)
+ self.assertEqual(sys.getrefcount(cb), 3)
+
+ self.emitter.foo.disconnect(cb)
+ self.assertEqual(sys.getrefcount(cb), 2)
+
+
+class CppSignalRefCount(unittest.TestCase):
+
+ def setUp(self):
+ self.emitter = QObject()
+
+ def tearDown(self):
+ self.emitter
+
+ @unittest.skipUnless(hasattr(sys, "getrefcount"), f"{sys.implementation.name} has no refcount")
+ def testRefCount(self):
+ def cb(*args):
+ pass
+
+ self.assertEqual(sys.getrefcount(cb), 2)
+
+ self.emitter.destroyed.connect(cb)
+ self.assertEqual(sys.getrefcount(cb), 3)
+
+ self.emitter.destroyed.disconnect(cb)
+ self.assertEqual(sys.getrefcount(cb), 2)
+
+
+if __name__ == '__main__':
+ unittest.main()