Use new decorators api on autoconnect test.

Reviewer: Marcelo Lira <marcelo.lira@openbossa.org>,
          Luciano Wolf <luciano.wolf@openbossa.org>

tests/signals/signal_autoconnect_test.py

@@ -0,0 +1,31 @@
+# -*- coding: utf-8 -*-
+
+import unittest
+
+from PySide.QtCore import *
+from PySide.QtGui import *
+
+class MyObject(QWidget):
+    def __init__(self, parent=None):
+        QWidget.__init__(self, parent)
+        self._method_called = False
+
+    @Slot()
+    def on_button_clicked(self):
+        self._method_called = True
+
+
+class AutoConnectionTest(unittest.TestCase):
+
+    def testConnection(self):
+        app = QApplication([])
+
+        win = MyObject()
+        btn = QPushButton("click", win)
+        btn.setObjectName("button")
+        QMetaObject.connectSlotsByName(win)
+        btn.click()
+        self.assert_(win._method_called)
+
+if __name__ == '__main__':
+    unittest.main()