Add severity to notifications

Author: pontusmelke

neo4j/v1/session.py

@@ -333,7 +333,7 @@ def __init__(self, statement, parameters, **metadata):
             if position is not None:
                 position = Position(position["offset"], position["line"], position["column"])
             self.notifications.append(Notification(notification["code"], notification["title"],
-                                                   notification["description"], position))
+                                                   notification["description"], notification["severity"], position))
 
 
 class Counters(object):
@@ -416,9 +416,11 @@ def __repr__(self):
 #:   a short summary of the notification
 #: description:
 #:   a long description of the notification
+#: severity:
+#:   the severity level of the notification
 #: position:
 #:   the position in the statement where this notification points to, if relevant.
-Notification = namedtuple("Notification", ("code", "title", "description", "position"))
+Notification = namedtuple("Notification", ("code", "title", "description", "severity", "position"))
 
 #: A position within a statement, consisting of offset, line and column.
 #:

test/test_session.py

@@ -337,6 +337,7 @@ def test_can_obtain_notification_info(self):
             assert notification.code == "Neo.ClientNotification.Statement.CartesianProduct"
             assert notification.title == "This query builds a cartesian product between " \
                                          "disconnected patterns."
+            assert notification.severity == "WARNING"
             assert notification.description == "If a part of a query contains multiple " \
                                                "disconnected patterns, this will build a " \
                                                "cartesian product between all those parts. This " \