1 files changed, 91 insertions, 0 deletions
diff --git a/sources/pyside6/tests/QtWidgets/keep_reference_test.py b/sources/pyside6/tests/QtWidgets/keep_reference_test.py
new file mode 100644
index 000000000..9d21c4580
--- /dev/null
+++ b/sources/pyside6/tests/QtWidgets/keep_reference_test.py
@@ -0,0 +1,91 @@
+#!/usr/bin/env python
+# Copyright (C) 2022 The Qt Company Ltd.
+# SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
+
+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 helper.usesqapplication import UsesQApplication
+from PySide6.QtCore import QAbstractTableModel
+from PySide6.QtWidgets import QTableView
+
+
+class TestModel(QAbstractTableModel):
+    def __init__(self, parent=None):
+        QAbstractTableModel.__init__(self, parent)
+
+    def rowCount(self, parent):
+        return 0
+
+    def columnCount(self, parent):
+        return 0
+
+    def data(self, index, role):
+        return None
+
+
+class KeepReferenceTest(UsesQApplication):
+
+    def testModelWithoutParent(self):
+        view = QTableView()
+        model = TestModel()
+        view.setModel(model)
+        samemodel = view.model()
+        self.assertEqual(model, samemodel)
+
+    def testModelWithParent(self):
+        view = QTableView()
+        model = TestModel(None)
+        view.setModel(model)
+        samemodel = view.model()
+        self.assertEqual(model, samemodel)
+
+    @unittest.skipUnless(hasattr(sys, "getrefcount"), f"{sys.implementation.name} has no refcount")
+    def testReferenceCounting(self):
+        '''Tests reference count of model object referred by view objects.'''
+        model1 = TestModel()
+        refcount1 = sys.getrefcount(model1)
+        view1 = QTableView()
+        view1.setModel(model1)
+        self.assertEqual(sys.getrefcount(view1.model()), refcount1 + 1)
+
+        view2 = QTableView()
+        view2.setModel(model1)
+        self.assertEqual(sys.getrefcount(view2.model()), refcount1 + 2)
+
+        model2 = TestModel()
+        view2.setModel(model2)
+        self.assertEqual(sys.getrefcount(view1.model()), refcount1 + 1)
+
+    @unittest.skipUnless(hasattr(sys, "getrefcount"), f"{sys.implementation.name} has no refcount")
+    def testReferenceCountingWhenDeletingReferrer(self):
+        '''Tests reference count of model object referred by deceased view object.'''
+        model = TestModel()
+        refcount1 = sys.getrefcount(model)
+        view = QTableView()
+        view.setModel(model)
+        self.assertEqual(sys.getrefcount(view.model()), refcount1 + 1)
+
+        del view
+        self.assertEqual(sys.getrefcount(model), refcount1)
+
+    def testReferreedObjectSurvivalAfterContextEnd(self):
+        '''Model object assigned to a view object must survive after getting out of context.'''
+        def createModelAndSetToView(view):
+            model = TestModel()
+            model.setObjectName('created model')
+            view.setModel(model)
+        view = QTableView()
+        createModelAndSetToView(view)
+        model = view.model()
+
+
+if __name__ == '__main__':
+    unittest.main()
+