Adding new-style signal/slot tests.

Based on Marcelo Lira's source code.

Reviewer: Hugo Parente Lima <hugo.lima@openbossa.org>,
          Luciano Wolf <luciano.wolf@openbossa.org>

tests/signals/ref01_test.py

@@ -0,0 +1,27 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+
+import unittest
+from PySide.QtCore import QObject, Signal
+
+class BoundAndUnboundSignalsTest(unittest.TestCase):
+
+    def setUp(self):
+        self.methods = set(('connect', 'disconnect', 'emit'))
+
+    def tearDown(self):
+        del self.methods
+
+    def testUnboundSignal(self):
+        self.assertEqual(type(QObject.destroyed), Signal)
+        self.assertFalse(self.methods.issubset(dir(QObject.destroyed)))
+
+    def testBoundSignal(self):
+        obj = QObject()
+        self.assertNotEqual(type(obj.destroyed), Signal)
+        self.assert_(self.methods.issubset(dir(obj.destroyed)))
+
+if __name__ == '__main__':
+    unittest.main()
+
+