1 files changed, 85 insertions, 0 deletions
diff --git a/sources/pyside6/tests/signals/short_circuit_test.py b/sources/pyside6/tests/signals/short_circuit_test.py
new file mode 100644
index 000000000..1ad4bc24c
--- /dev/null
+++ b/sources/pyside6/tests/signals/short_circuit_test.py
@@ -0,0 +1,85 @@
+# 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 gc
+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 QObject, Signal
+
+
+class Sender(QObject):
+    """Sender class used in this test."""
+
+    foo = Signal()
+    foo_int = Signal(int)
+    foo_int_int_string = Signal(int, int, str)
+    foo_int_qobject = Signal(int, QObject)
+
+    def __init__(self, parent=None):
+        QObject.__init__(self, parent)
+
+
+class ShortCircuitSignals(unittest.TestCase):
+    def setUp(self):
+        self.called = False
+
+    def tearDown(self):
+        try:
+            del self.args
+        except:  # noqa: E722
+            pass
+        # PYSIDE-535: Need to collect garbage in PyPy to trigger deletion
+        gc.collect()
+
+    def callback(self, *args):
+        if tuple(self.args) == args:
+            self.called = True
+
+    def testNoArgs(self):
+        """Short circuit signal without arguments"""
+        obj1 = Sender()
+        obj1.foo.connect(self.callback)
+        self.args = tuple()
+        obj1.foo.emit(*self.args)
+        self.assertTrue(self.called)
+
+    def testWithArgs(self):
+        """Short circuit signal with integer arguments"""
+        obj1 = Sender()
+
+        obj1.foo_int.connect(self.callback)
+        self.args = (42,)
+        obj1.foo_int.emit(*self.args)
+
+        self.assertTrue(self.called)
+
+    def testMultipleArgs(self):
+        """Short circuit signal with multiple arguments"""
+        obj1 = Sender()
+
+        obj1.foo_int_int_string.connect(self.callback)
+        self.args = (42, 33, 'char')
+        obj1.foo_int_int_string.emit(*self.args)
+
+        self.assertTrue(self.called)
+
+    def testComplexArgs(self):
+        """Short circuit signal with complex arguments"""
+        obj1 = Sender()
+
+        obj1.foo_int_qobject.connect(self.callback)
+        self.args = (42, obj1)
+
+        obj1.foo_int_qobject.emit(*self.args)
+        self.assertTrue(self.called)
+
+
+if __name__ == '__main__':
+    unittest.main()