1 files changed, 98 insertions, 0 deletions
diff --git a/sources/pyside6/tests/QtWidgets/qstyle_test.py b/sources/pyside6/tests/QtWidgets/qstyle_test.py
new file mode 100644
index 000000000..5d86e3d71
--- /dev/null
+++ b/sources/pyside6/tests/QtWidgets/qstyle_test.py
@@ -0,0 +1,98 @@
+#############################################################################
+##
+## Copyright (C) 2016 The Qt Company Ltd.
+## Contact: https://www.qt.io/licensing/
+##
+## This file is part of the test suite of Qt for Python.
+##
+## $QT_BEGIN_LICENSE:GPL-EXCEPT$
+## 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 sys
+import os
+import sys
+import unittest
+
+sys.path.append(os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
+from init_paths import init_test_paths
+init_test_paths(False)
+
+from helper.usesqapplication import UsesQApplication
+
+from PySide6.QtGui import QWindow
+from PySide6.QtWidgets import (QApplication, QFontComboBox, QLabel, QProxyStyle,
+    QStyleFactory, QWidget)
+
+class ProxyStyle(QProxyStyle):
+
+    def __init__(self, style):
+        QProxyStyle.__init__(self, style)
+        self.polished = 0
+
+    def polish(self, widget):
+        self.polished = self.polished + 1
+        super(ProxyStyle, self).polish(widget)
+
+
+class SetStyleTest(UsesQApplication):
+    '''Tests setting the same QStyle for all objects in a UI hierarchy.'''
+
+    def testSetStyle(self):
+        '''All this test have to do is not break with some invalid Python wrapper.'''
+
+        def setStyleHelper(widget, style):
+            widget.setStyle(style)
+            widget.setPalette(style.standardPalette())
+            for child in widget.children():
+                if isinstance(child, QWidget):
+                    setStyleHelper(child, style)
+
+        container = QWidget()
+        # QFontComboBox is used because it has an QLineEdit created in C++ inside it,
+        # and if the QWidget.setStyle(style) steals the ownership of the style
+        # for the C++ originated widget everything will break.
+        fontComboBox = QFontComboBox(container)
+        label = QLabel(container)
+        label.setText('Label')
+        style = QStyleFactory.create(QStyleFactory.keys()[0])
+        setStyleHelper(container, style)
+
+    def testSetProxyStyle(self):
+        label = QLabel("QtWidgets/ProxyStyle test")
+        baseStyle = QStyleFactory.create(QApplication.instance().style().objectName())
+        self.assertTrue(baseStyle)
+        proxyStyle = ProxyStyle(baseStyle)
+        label.setStyle(proxyStyle)
+        label.show()
+        while not label.windowHandle().isExposed():
+           QApplication.instance().processEvents()
+        self.assertTrue(proxyStyle.polished > 0)
+
+    def testSetStyleOwnership(self):
+        style = QStyleFactory.create(QStyleFactory.keys()[0])
+        self.assertEqual(sys.getrefcount(style), 2)
+        QApplication.instance().setStyle(style)
+        self.assertEqual(sys.getrefcount(style), 3)
+
+
+if __name__ == '__main__':
+    unittest.main()
+