Fix bug 651 - "Calling disconnect() with no arguments causes segfault"

tests/signals/CMakeLists.txt

@@ -3,6 +3,7 @@ PYSIDE_TEST(bug_311.py)
 PYSIDE_TEST(bug_312.py)
 PYSIDE_TEST(bug_319.py)
 PYSIDE_TEST(decorators_test.py)
+PYSIDE_TEST(disconnect_test.py)
 PYSIDE_TEST(invalid_callback_test.py)
 PYSIDE_TEST(lambda_gui_test.py)
 PYSIDE_TEST(lambda_test.py)

tests/signals/disconnect_test.py

@@ -0,0 +1,32 @@
+import unittest
+from PySide.QtCore import *
+
+class Foo(QObject):
+    bar = Signal()
+
+class TestDisconnect(unittest.TestCase):
+    def theSlot1(self):
+        self.called1 = True
+
+    def theSlot2(self):
+        self.called2 = True
+
+    def testIt(self):
+        self.called1 = False
+        self.called2 = False
+        f = Foo()
+        f.bar.connect(self.theSlot1)
+        f.bar.connect(self.theSlot2)
+        f.bar.emit()
+        self.assertTrue(self.called1)
+        self.assertTrue(self.called2)
+
+        self.called1 = False
+        self.called2 = False
+        f.bar.disconnect()
+        f.bar.emit()
+        self.assertFalse(self.called1)
+        self.assertFalse(self.called2)
+
+if __name__ == '__main__':
+    unittest.main()