1 files changed, 12 insertions, 1 deletions
diff --git a/sources/pyside6/tests/pysidetest/signalinstance_equality_test.py b/sources/pyside6/tests/pysidetest/signalinstance_equality_test.py
index 732420c4d..5faaa38d4 100644
--- a/sources/pyside6/tests/pysidetest/signalinstance_equality_test.py
+++ b/sources/pyside6/tests/pysidetest/signalinstance_equality_test.py
@@ -12,7 +12,7 @@ init_test_paths(False)
 
 from helper.usesqapplication import UsesQApplication
 
-from PySide6.QtCore import QFile, QObject, QTimer, Signal, Slot
+from PySide6.QtCore import QFile, QObject, QTimer, Signal, SignalInstance, Slot
 from PySide6.QtWidgets import QSlider
 
 
@@ -41,6 +41,17 @@ class TestSignalInstance(unittest.TestCase):
         o = D()
         self.assertTrue(o.custom_signal == o.custom_signal)
 
+    # additional tests of old errors from 2010 or so
+    def test_uninitialized_SignalInstance(self):
+        # This will no longer crash
+        print(SignalInstance())
+        with self.assertRaises(RuntimeError):
+            SignalInstance().connect(lambda: None)
+        with self.assertRaises(RuntimeError):
+            SignalInstance().disconnect()
+        with self.assertRaises(RuntimeError):
+            SignalInstance().emit()
+
 
 class MyWidget(QSlider):
     valueChanged = Signal(tuple)