Created unit test to use signals in objects not created on python.

Reviewer: Hugo Parente Lima <hugo.lima@openbossa.org>
          Marcelo Lira <marcelo.lira@openbossa.org>

tests/QtGui/qdynamic_signal.py

@@ -0,0 +1,27 @@
+
+import unittest
+
+from PySide.QtGui import QInputDialog
+
+from helper import UsesQApplication
+
+class DynamicSignalTest(UsesQApplication):
+
+    def cp(self, obj):
+        self._called = True
+
+    def testQDialog(self):
+        dlg = QInputDialog()
+        dlg.setInputMode(QInputDialog.TextInput)
+        lst = dlg.children()
+        self.assert_(len(lst))
+        obj = lst[0]
+        self._called = False
+        obj.destroyed.connect(self.cb)
+        obj = None
+        del dlg
+        self.assert_(self._called)
+
+
+if __name__ == '__main__':
+    unittest.main()