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/ref02_test.py

@@ -0,0 +1,47 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+
+import unittest
+from PySide.QtCore import QCoreApplication, QTimeLine
+from helper import UsesQCoreApplication
+
+class NativeSignalsTest(UsesQCoreApplication):
+
+    def setUp(self):
+        UsesQCoreApplication.setUp(self)
+        self.called = False
+        self.timeline = QTimeLine(100)
+
+    def tearDown(self):
+        del self.called
+        del self.timeline
+        UsesQCoreApplication.tearDown(self)
+
+    def testSignalWithIntArgument(self):
+
+        def valueChangedSlot(value):
+            self.called = True
+            self.assertEqual(type(value), float)
+            self.app.quit()
+
+        self.timeline.valueChanged.connect(valueChangedSlot)
+        self.timeline.start()
+
+        self.app.exec_()
+        self.assert_(self.called)
+
+    def testSignalWithoutArguments(self):
+
+        def finishedSlot():
+            self.called = True
+            self.app.quit()
+
+        self.timeline.finished.connect(finishedSlot)
+        self.timeline.start()
+
+        self.app.exec_()
+        self.assert_(self.called)
+
+if __name__ == '__main__':
+    unittest.main()
+