1 files changed, 152 insertions, 0 deletions
diff --git a/sources/pyside6/tests/QtQml/registersingletontype.py b/sources/pyside6/tests/QtQml/registersingletontype.py
new file mode 100644
index 000000000..6beca1131
--- /dev/null
+++ b/sources/pyside6/tests/QtQml/registersingletontype.py
@@ -0,0 +1,152 @@
+# 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.helper import quickview_errorstring
+
+from PySide6.QtCore import Property, Signal, QTimer, QUrl, QObject, Slot
+from PySide6.QtGui import QGuiApplication
+from PySide6.QtQml import (qmlRegisterSingletonType, qmlRegisterSingletonInstance,
+                           QmlElement, QmlSingleton, QJSValue)
+from PySide6.QtQuick import QQuickView
+
+
+URI = "Singletons"
+
+
+finalResult = 0
+qObjectQmlTypeId = 0
+
+
+class SingletonQObject(QObject):
+    def __init__(self, parent=None):
+        QObject.__init__(self, parent)
+        self._data = 100
+
+    def getData(self):
+        return self._data
+
+    def setData(self, data):
+        global finalResult
+        finalResult = self._data = data
+
+    data = Property(int, getData, setData)
+
+
+def singletonQObjectCallback(engine):
+    obj = SingletonQObject()
+    obj.setData(50)
+    return obj
+
+
+def singletonQJSValueCallback(engine):
+    return engine.evaluate("new Object({data: 50})")
+
+
+QML_IMPORT_NAME = URI
+QML_IMPORT_MAJOR_VERSION = 1
+
+
+@QmlElement
+@QmlSingleton
+class DecoratedSingletonQObject(QObject):
+    def __init__(self, parent=None):
+        super().__init__(parent)
+        self._data = 200
+
+    def getData(self):
+        return self._data
+
+    def setData(self, data):
+        self._data = data
+
+    data = Property(int, getData, setData)
+
+
+@QmlElement
+@QmlSingleton
+class DecoratedSingletonWithCreate(QObject):
+    def __init__(self, data, parent=None):
+        super().__init__(parent)
+        self._data = data
+
+    @staticmethod
+    def create(engine):
+        return DecoratedSingletonWithCreate(400)
+
+    def getData(self):
+        return self._data
+
+    def setData(self, data):
+        self._data = data
+
+    data = Property(int, getData, setData)
+
+
+class TestQuickView(QQuickView):
+    def __init__(self, parent=None):
+        super().__init__(parent)
+        self._singleton_instance_qobject_int = False
+        self._singleton_instance_qobject_str = False
+        self._singleton_instance_jsvalue_int = False
+
+    @Slot()
+    def testSlot(self):
+        engine = self.engine()
+        instance = engine.singletonInstance(qObjectQmlTypeId)
+        if instance is not None and isinstance(instance, QObject):
+            self._singleton_instance_qobject_int = True
+        instance = engine.singletonInstance(URI, 'SingletonQObjectNoCallback')
+        if instance is not None and isinstance(instance, QObject):
+            self._singleton_instance_qobject_str = True
+        instance = engine.singletonInstance(URI, 'SingletonQJSValue')
+        if instance is not None and isinstance(instance, QJSValue):
+            self._singleton_instance_jsvalue_int = True
+        self.close()
+
+
+class TestQmlSupport(unittest.TestCase):
+    def testIt(self):
+        app = QGuiApplication([])
+
+        qObjectQmlTypeId = qmlRegisterSingletonType(SingletonQObject, URI, 1, 0,
+                                                    'SingletonQObjectNoCallback')
+        qmlRegisterSingletonType(SingletonQObject, URI, 1, 0, 'SingletonQObjectCallback',
+                                 singletonQObjectCallback)
+
+        qmlRegisterSingletonType(URI, 1, 0, 'SingletonQJSValue', singletonQJSValueCallback)
+
+        # Accepts only QObject derived types
+        l = [1, 2]
+        with self.assertRaises(TypeError):
+            qmlRegisterSingletonInstance(SingletonQObject, URI, 1, 0, 'SingletonInstance', l)
+
+        # Modify value on the instance
+        s = SingletonQObject()
+        s.setData(99)
+        qmlRegisterSingletonInstance(SingletonQObject, URI, 1, 0, 'SingletonInstance', s)
+
+        view = TestQuickView()
+        file = Path(__file__).resolve().parent / 'registersingletontype.qml'
+        self.assertTrue(file.is_file())
+        view.setSource(QUrl.fromLocalFile(file))
+        self.assertTrue(view.rootObject(), quickview_errorstring(view))
+        view.resize(200, 200)
+        view.show()
+        QTimer.singleShot(250, view.testSlot)
+        app.exec()
+        self.assertEqual(finalResult, 899)
+        self.assertTrue(view._singleton_instance_qobject_int)
+        self.assertTrue(view._singleton_instance_qobject_str)
+        self.assertTrue(view._singleton_instance_jsvalue_int)
+
+
+if __name__ == '__main__':    unittest.main()