2 files changed, 19 insertions, 1 deletions
diff --git a/tests/auto/qml/qqmlstatemachine/data/signaltransitionhelper.qml b/tests/auto/qml/qqmlstatemachine/data/signaltransitionhelper.qml
new file mode 100644
index 0000000..f915cdb
--- /dev/null
+++ b/tests/auto/qml/qqmlstatemachine/data/signaltransitionhelper.qml
@@ -0,0 +1,10 @@
+// Copyright (C) 2023 The Qt Company
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
+
+import QtQuick
+import QtQml.StateMachine
+
+SignalTransition {
+    // Do not crash on SignalTransition without signal
+    onTriggered: () => {}
+}
diff --git a/tests/auto/qml/qqmlstatemachine/tst_qqmlstatemachine.cpp b/tests/auto/qml/qqmlstatemachine/tst_qqmlstatemachine.cpp
index 81e2fb6..e9f1721 100644
--- a/tests/auto/qml/qqmlstatemachine/tst_qqmlstatemachine.cpp
+++ b/tests/auto/qml/qqmlstatemachine/tst_qqmlstatemachine.cpp
@@ -116,10 +116,18 @@ void tst_qqmlstatemachine::tst_bindings()
     QVariant signal2;
     QMetaObject::invokeMethod(obj.get(), "getSignal1", Q_RETURN_ARG(QVariant, signal1));
     QMetaObject::invokeMethod(obj.get(), "getSignal2", Q_RETURN_ARG(QVariant, signal2));
+    // The setter needs an active engine, so we use a helper component to create
+    // a helper instance for testing binding loops.
+    QQmlComponent helperComponent(&engine, testFileUrl("signaltransitionhelper.qml"));
     // QJSValue does not implement operator== so we supply own comparator
     QTestPrivate::testReadWritePropertyBasics<SignalTransition, QJSValue>(
                 *st1, signal1.value<QJSValue>(), signal2.value<QJSValue>(), "signal",
-                [](QJSValue d1, QJSValue d2) { return d1.strictlyEquals(d2); });
+                [](QJSValue d1, QJSValue d2) { return d1.strictlyEquals(d2); },
+                [](const QJSValue &val) { return QTest::toString(val); },
+                [&helperComponent]() {
+                    return std::unique_ptr<SignalTransition>(
+                        qobject_cast<SignalTransition*>(helperComponent.create()));
+                });
     if (QTest::currentTestFailed()) {
         qWarning() << "SignalTransition::signal bindable test failed.";
         return;