1 files changed, 21 insertions, 0 deletions
diff --git a/tests/auto/corelib/kernel/qobject/tst_qobject.cpp b/tests/auto/corelib/kernel/qobject/tst_qobject.cpp
index c734cfe4dd..43dcb241e4 100644
--- a/tests/auto/corelib/kernel/qobject/tst_qobject.cpp
+++ b/tests/auto/corelib/kernel/qobject/tst_qobject.cpp
@@ -145,6 +145,7 @@ private slots:
     void disconnectDoesNotLeakFunctor();
     void contextDoesNotLeakFunctor();
     void connectBase();
+    void connectWarnings();
     void qmlConnect();
     void exceptions();
     void noDeclarativeParentChangedOnDestruction();
@@ -6685,6 +6686,26 @@ void tst_QObject::connectBase()
     QCOMPARE( r1.count_slot3, 1 );
 }
 
+void tst_QObject::connectWarnings()
+{
+    SubSender sub;
+    SenderObject obj;
+    ReceiverObject r1;
+    r1.reset();
+
+    QTest::ignoreMessage(QtWarningMsg, "QObject::connect(SenderObject, ReceiverObject): invalid null parameter");
+    connect(nullptr, &SubSender::signal1, &r1, &ReceiverObject::slot1);
+
+    QTest::ignoreMessage(QtWarningMsg, "QObject::connect(SubSender, Unknown): invalid null parameter");
+    connect(&sub, &SubSender::signal1, nullptr, &ReceiverObject::slot1);
+
+    QTest::ignoreMessage(QtWarningMsg, "QObject::connect(SenderObject, ReceiverObject): invalid null parameter");
+    connect(nullptr, &SenderObject::signal1, &r1, &ReceiverObject::slot1);
+
+    QTest::ignoreMessage(QtWarningMsg, "QObject::connect(SenderObject, Unknown): invalid null parameter");
+    connect(&obj, &SenderObject::signal1, nullptr, &ReceiverObject::slot1);
+}
+
 struct QmlReceiver : public QtPrivate::QSlotObjectBase
 {
     int callCount;