Deliver notification info

Created by: stefanoborini

Notification system to communicate to the UI and other entities interested in notification.

force_bdss/tests/test_local_traits.py

 import unittest
 from traits.api import HasStrictTraits, TraitError
 
-from force_bdss.local_traits import Identifier, CUBAType
+from force_bdss.local_traits import Identifier, CUBAType, ZMQSocketURL
 
 
 class Traited(HasStrictTraits):
     val = Identifier()
     cuba = CUBAType()
+    socket_url = ZMQSocketURL()
 
 
 class TestLocalTraits(unittest.TestCase):
@@ -25,3 +26,23 @@ class TestLocalTraits(unittest.TestCase):
         c = Traited()
         c.cuba = "PRESSURE"
         self.assertEqual(c.cuba, "PRESSURE")
+
+    def test_zmq_socket_url(self):
+        c = Traited()
+
+        for working in ["tcp://127.0.0.1:12345",
+                        "tcp://255.255.255.255:65535",
+                        "tcp://1.1.1.1:65535"]:
+            c.socket_url = working
+            self.assertEqual(c.socket_url, working)
+
+        for broken in ["tcp://270.0.0.1:12345",
+                       "tcp://0.270.0.1:12345",
+                       "tcp://0.0.270.1:12345",
+                       "tcp://0.0.0.270:12345",
+                       "url://255.255.255.255:65535",
+                       "whatever",
+                       "tcp://1.1.1.1:100000"]:
+            with self.assertRaises(TraitError):
+                c.socket_url = broken
+