1 files changed, 94 insertions, 0 deletions
diff --git a/sources/pyside6/tests/QtWidgets/private_mangle_test.py b/sources/pyside6/tests/QtWidgets/private_mangle_test.py
new file mode 100644
index 000000000..67ad14d68
--- /dev/null
+++ b/sources/pyside6/tests/QtWidgets/private_mangle_test.py
@@ -0,0 +1,94 @@
+# Copyright (C) 2022 The Qt Company Ltd.
+# SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
+
+"""
+This is the example from https://bugreports.qt.io/browse/PYSIDE-772
+with no interaction as a unittest.
+"""
+
+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 Signal
+from PySide6.QtWidgets import QApplication, QWidget
+from PySide6 import QtWidgets
+
+
+class Harness(QWidget):
+    clicked = Signal()
+
+    def __init__(self):
+        super().__init__()
+        self.clicked.connect(self.method)
+        self.clicked.connect(self._method)
+        self.clicked.connect(self.__method)
+
+    def method(self):  # Public method
+        self.method_result = self.sender()
+
+    def _method(self):  # Private method
+        self.method__result = self.sender()
+
+    def __method(self):  # Name mangled method
+        self.method___result = self.sender()
+
+
+class _Under(QWidget):
+    clicked = Signal()
+
+    def __init__(self):
+        super().__init__()
+        self.clicked.connect(self.method)
+        self.clicked.connect(self._method)
+        self.clicked.connect(self.__method)
+
+    def method(self):  # Public method
+        self.method_result = self.sender()
+
+    def _method(self):  # Private method
+        self.method__result = self.sender()
+
+    def __method(self):  # Name mangled method
+        self.method___result = self.sender()
+
+
+class TestMangle(unittest.TestCase):
+
+    def setUp(self):
+        QApplication()
+
+    def tearDown(self):
+        qApp.shutdown()
+
+    def testPrivateMangle(self):
+        harness = Harness()
+        harness.clicked.emit()
+        self.assertEqual(harness.method_result, harness)
+        self.assertEqual(harness.method__result, harness)
+        self.assertEqual(harness.method___result, harness)
+        self.assertTrue("method" in type(harness).__dict__)
+        self.assertTrue("_method" in type(harness).__dict__)
+        self.assertFalse("__method" in type(harness).__dict__)
+        self.assertTrue("_Harness__method" in type(harness).__dict__)
+
+    def testPrivateMangleUnder(self):
+        harness = _Under()
+        harness.clicked.emit()
+        self.assertEqual(harness.method_result, harness)
+        self.assertEqual(harness.method__result, harness)
+        self.assertEqual(harness.method___result, harness)
+        # make sure that we skipped over the underscore in "_Under"
+        self.assertTrue("method" in type(harness).__dict__)
+        self.assertTrue("_method" in type(harness).__dict__)
+        self.assertFalse("__method" in type(harness).__dict__)
+        self.assertTrue("_Under__method" in type(harness).__dict__)
+
+
+if __name__ == '__main__':
+    unittest.main()