1 files changed, 51 insertions, 0 deletions
diff --git a/sources/pyside6/tests/QtGui/event_filter_test.py b/sources/pyside6/tests/QtGui/event_filter_test.py
new file mode 100644
index 000000000..01d8fbc02
--- /dev/null
+++ b/sources/pyside6/tests/QtGui/event_filter_test.py
@@ -0,0 +1,51 @@
+# 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 QObject, QEvent
+from PySide6.QtGui import QWindow
+
+
+class MyFilter(QObject):
+    def eventFilter(self, obj, event):
+        if event.type() == QEvent.KeyPress:
+            pass
+        return QObject.eventFilter(self, obj, event)
+
+
+class EventFilter(UsesQApplication):
+    @unittest.skipUnless(hasattr(sys, "getrefcount"), f"{sys.implementation.name} has no refcount")
+    def testRefCount(self):
+        o = QObject()
+        filt = MyFilter()
+        o.installEventFilter(filt)
+        self.assertEqual(sys.getrefcount(o), 2)
+
+        o.installEventFilter(filt)
+        self.assertEqual(sys.getrefcount(o), 2)
+
+        o.removeEventFilter(filt)
+        self.assertEqual(sys.getrefcount(o), 2)
+
+    def testObjectDestructorOrder(self):
+        w = QWindow()
+        filt = MyFilter()
+        filt.app = self.app
+        w.installEventFilter(filt)
+        w.show()
+        w.close()
+        w = None
+        self.assertTrue(True)
+
+
+if __name__ == '__main__':
+    unittest.main()