1 files changed, 175 insertions, 0 deletions
diff --git a/sources/pyside6/tests/QtStateMachine/qabstracttransition_test.py b/sources/pyside6/tests/QtStateMachine/qabstracttransition_test.py
new file mode 100644
index 000000000..9c52bfd59
--- /dev/null
+++ b/sources/pyside6/tests/QtStateMachine/qabstracttransition_test.py
@@ -0,0 +1,175 @@
+#!/usr/bin/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 PySide6.QtCore import (QCoreApplication, QObject, QParallelAnimationGroup,
+                            QTimer, SIGNAL)
+from PySide6.QtStateMachine import (QEventTransition, QFinalState, QState,
+                                    QStateMachine, QSignalTransition)
+
+
+def addStates(transition):
+    sx = QState()
+    sy = QState()
+    transition.setTargetStates([sx, sy])
+
+
+def addAnimation(transition):
+    animation = QParallelAnimationGroup()
+    transition.addAnimation(animation)
+
+
+class QAbstractTransitionTest(unittest.TestCase):
+
+    def testBasic(self):
+        app = QCoreApplication([])
+
+        o = QObject()
+        o.setProperty("text", "INdT")
+
+        machine = QStateMachine()
+        s1 = QState()
+        s1.assignProperty(o, "text", "Rocks")
+
+        s2 = QFinalState()
+        t = s1.addTransition(o, SIGNAL("change()"), s2)
+
+        self.assertEqual(t.targetStates(), [s2])
+
+        addStates(t)
+        self.assertEqual(len(t.targetStates()), 2)
+
+        animation = QParallelAnimationGroup()
+        t.addAnimation(animation)
+
+        self.assertEqual(t.animations(), [animation])
+
+        addAnimation(t)
+        self.assertEqual(t.animations()[0].parent(), None)
+
+        machine.addState(s1)
+        machine.addState(s2)
+        machine.setInitialState(s1)
+        machine.start()
+
+        QTimer.singleShot(100, app.quit)
+        app.exec()
+
+    @unittest.skipUnless(hasattr(sys, "getrefcount"), f"{sys.implementation.name} has no refcount")
+    def testRefCountOfTargetState(self):
+        transition = QEventTransition()
+        state1 = QState()
+        refcount1 = sys.getrefcount(state1)
+
+        transition.setTargetState(state1)
+
+        self.assertEqual(transition.targetState(), state1)
+        self.assertEqual(sys.getrefcount(transition.targetState()), refcount1 + 1)
+
+        state2 = QState()
+        refcount2 = sys.getrefcount(state2)
+
+        transition.setTargetState(state2)
+
+        self.assertEqual(transition.targetState(), state2)
+        self.assertEqual(sys.getrefcount(transition.targetState()), refcount2 + 1)
+        self.assertEqual(sys.getrefcount(state1), refcount1)
+
+        del transition
+
+        self.assertEqual(sys.getrefcount(state2), refcount2)
+
+    @unittest.skipUnless(hasattr(sys, "getrefcount"), f"{sys.implementation.name} has no refcount")
+    def testRefCountOfTargetStates(self):
+        transition = QEventTransition()
+        state1 = QState()
+        state2 = QState()
+        states = [state1, state2]
+        refcount1 = sys.getrefcount(state1)
+        refcount2 = sys.getrefcount(state2)
+
+        transition.setTargetStates(states)
+
+        self.assertEqual(transition.targetStates(), states)
+        self.assertEqual(transition.targetState(), state1)
+        self.assertEqual(sys.getrefcount(transition.targetStates()[0]), refcount1 + 1)
+        self.assertEqual(sys.getrefcount(transition.targetStates()[1]), refcount2 + 1)
+
+        del states
+        del transition
+
+        self.assertEqual(sys.getrefcount(state1), refcount1 - 1)
+        self.assertEqual(sys.getrefcount(state2), refcount2 - 1)
+
+    @unittest.skipUnless(hasattr(sys, "getrefcount"), f"{sys.implementation.name} has no refcount")
+    def testRefCountOfTargetStatesAfterSingleTargetState(self):
+        transition = QEventTransition()
+        state0 = QState()
+        refcount0 = sys.getrefcount(state0)
+
+        transition.setTargetState(state0)
+
+        self.assertEqual(transition.targetState(), state0)
+        self.assertEqual(sys.getrefcount(transition.targetState()), refcount0 + 1)
+
+        state1 = QState()
+        state2 = QState()
+        states = [state1, state2]
+        refcount1 = sys.getrefcount(state1)
+        refcount2 = sys.getrefcount(state2)
+
+        transition.setTargetStates(states)
+
+        self.assertEqual(sys.getrefcount(state0), refcount0)
+        self.assertEqual(transition.targetStates(), states)
+        self.assertEqual(transition.targetState(), state1)
+        self.assertEqual(sys.getrefcount(transition.targetStates()[0]), refcount1 + 1)
+        self.assertEqual(sys.getrefcount(transition.targetStates()[1]), refcount2 + 1)
+
+        del states
+        del transition
+
+        self.assertEqual(sys.getrefcount(state1), refcount1 - 1)
+        self.assertEqual(sys.getrefcount(state2), refcount2 - 1)
+
+    @unittest.skipUnless(hasattr(sys, "getrefcount"), f"{sys.implementation.name} has no refcount")
+    def testRefCountOfTargetStatesBeforeSingleTargetState(self):
+        transition = QEventTransition()
+        state1 = QState()
+        state2 = QState()
+        states = [state1, state2]
+        refcount1 = sys.getrefcount(state1)
+        refcount2 = sys.getrefcount(state2)
+
+        transition.setTargetStates(states)
+
+        self.assertEqual(transition.targetStates(), states)
+        self.assertEqual(transition.targetState(), state1)
+        self.assertEqual(sys.getrefcount(transition.targetStates()[0]), refcount1 + 1)
+        self.assertEqual(sys.getrefcount(transition.targetStates()[1]), refcount2 + 1)
+
+        state3 = QState()
+        refcount3 = sys.getrefcount(state3)
+
+        transition.setTargetState(state3)
+
+        self.assertEqual(transition.targetState(), state3)
+        self.assertEqual(sys.getrefcount(transition.targetState()), refcount3 + 1)
+
+        del states
+
+        self.assertEqual(sys.getrefcount(state1), refcount1 - 1)
+        self.assertEqual(sys.getrefcount(state2), refcount2 - 1)
+
+
+if __name__ == '__main__':
+    unittest.main()