class TestResponseBuilderGraph(unittest.TestCase):
def setUp(self):
self.sampleconversationtrees = {
1: {123: set([124, 126]), 124: set([125]), 125: set([]),
126: set([127, 128]), 127: set([]), 128: set([129]), 129: set([])},
2: {130: set([131, 132]), 131: set([133, 134]), 132: set([135]),
133: set([]), 134: set([]), 135: set([])}}
self.rbg = ResponseBuilderGraph()
# self.rbg.setconversations(self.sampleconversationtrees)
self.sd = Sampledata()
self.messages = self.sd.getgraphmessages()
def test_is_child(self):
self.assertTrue(self.rbg.is_child(1, 123, 124))
self.assertTrue(self.rbg.is_child(1, 124, 125))
self.assertTrue(self.rbg.is_child(2, 132, 135))
self.assertFalse(self.rbg.is_child(1, 124, 123))
self.assertFalse(self.rbg.is_child(1, 125, 123))
self.assertFalse(self.rbg.is_child(2, 999, 123))
def test_add_node(self):
self.rbg.add_node(1, 234)
self.assertTrue(type(self.rbg.conversationtrees[1][234]) == Set)
self.rbg.add_node(1, 123)
self.assertTrue(self.rbg.conversationtrees[1][123] ==
set([124, 126]))
def test_remove_node(self):
remove_result = {123: set([124, 126]), 124: set([125]), 125: set([])}
self.rbg.remove_node(1, 126)
self.assertEqual(self.rbg.conversationtrees[1], remove_result)
remove_result = {123: set([124, 126])}
self.rbg.remove_node(1, 124)
self.assertEqual(self.rbg.conversationtrees[1], remove_result)
self.rbg.remove_node(1, 999)
self.rbg.remove_node(999, 1)
self.assertEqual(self.rbg.conversationtrees[1], remove_result)
def test_remove_edge(self):
remove_edge_result = {
123: set([126]), 124: set([125]), 125: set([]),
126: set([127, 128]), 127: set([]), 128: set([129]), 129: set([])}
self.rbg.remove_edge(1, 124)
self.assertEqual(self.rbg.conversationtrees[1], remove_edge_result)
self.rbg.remove_edge(1, 'DOESNT EXIST') # result should not change
self.assertEqual(self.rbg.conversationtrees[1], remove_edge_result)
def test_add_edge(self):
add_edge_result = {128: set([129]), 129: set([]), 123: set([124, 125, 126]),
124: set([125]), 125: set([]), 126: set([128, 127]), 127: set([])}
self.rbg.add_edge(1, 123, 125)
self.assertEqual(self.rbg.conversationtrees[1], add_edge_result)
self.rbg.add_edge(1, 123, 124) # already exists, result should not change
self.assertEqual(self.rbg.conversationtrees[1], add_edge_result)
def test_buildconversationtrees(self):
convtreesresult = {
1: {123: set([124, 126]), 124: set([125]), 125: set([]),
126: set([127, 128]), 127: set([]), 128: set([129]), 129: set([])},
2: {130: set([131, 132]), 131: set([133, 134]), 132: set([135]),
133: set([]), 134: set([]), 135: set([])}}
self.assertEqual(self.rbg.buildconversationtrees(self.messages), convtreesresult)
def test_getrootnodes(self):
rootnodes = {1: 123, 2: 130}
self.assertEqual(self.rbg.getrootnodes(self.messages), rootnodes)
def test_getchildnodes(self):
self.assertEqual(self.rbg.getchildnodes(1, 123), set([124, 126]))
self.assertEqual(self.rbg.getchildnodes(1, 999), None)
self.assertEqual(self.rbg.getchildnodes(2, 132), set([135]))
self.assertEqual(self.rbg.getchildnodes(999, 1), None)
def test_getfollowupnodes(self):
sampleconvstates = self.sd.getsampleconversationstates()
self.rbg.conversationstates = sampleconvstates
self.assertEqual(self.rbg.getfollowupnodes('bob'),
{1: set([125]), 2: set([133, 134])})
self.assertEqual(self.rbg.getfollowupnodes('hank'),
{1: set([]), 2: None})
self.assertEqual(self.rbg.getfollowupnodes('ann'),
{999: None})
self.assertEqual(self.rbg.getfollowupnodes('999'),
{})
def test_getresponseformatchingmessages(self):
messageone = MessageEntity('bob', 'Hi')
messagetwo = MessageEntity('bob', 'Not great')
messagetree = MessageEntity('bob', 'Feeling tired')
messagefour = MessageEntity('bob', 'I will!')
messagefive = MessageEntity('bob', 'Good!')
messagesix = MessageEntity('bob', '')
messageseven = MessageEntity('bob', 'BLABLABLA999')
messageeight = MessageEntity('bob', '130')
messagenine = MessageEntity('bob', '135')
# first question in a conversation
self.assertEqual(self.rbg.getresponseformessages(messageone),
[{'responseText': 'Hi! :) How are you?'}])
# the followup question
self.assertEqual(self.rbg.getresponseformessages(messagetwo),
[{'responseText': 'How come?'}])
# a repeated message should not receive another reply
self.assertFalse(self.rbg.getresponseformessages(messagetwo))
# the followup question after a repeated message should
self.assertEqual(self.rbg.getresponseformessages(messagetree),
[{'responseText': 'Aww. Get some sleep!'}])
# the final message in the chain
self.assertEqual(self.rbg.getresponseformessages(messagefour),
[{'responseText': 'Good night!'}])
# the second question repeated
self.assertFalse(self.rbg.getresponseformessages(messagefive))
# testing messages that do not occur
self.assertFalse(self.rbg.getresponseformessages(messagesix))
self.assertFalse(self.rbg.getresponseformessages(messageseven))
# first message in another conversation
self.assertEqual(self.rbg.getresponseformessages(messageeight),
[{'responseText': '130'}])
self.assertEqual(self.rbg.getresponseformessages(messageone),
[{'responseText': 'Hi! :) How are you?'}])
# parent messages have not yet been answered
self.assertFalse(self.rbg.getresponseformessages(messagenine))
# tests slightly different messages that do not match letter for letter
def test_getresponseforpartialmatchingmessages(self):
messageone = MessageEntity('bob', 'Hi how are you today!')
messagetwo = MessageEntity('bob', 'Not great QQQ')
# first question in a conversation
self.assertEqual(self.rbg.getresponseformessages(messageone),
[{'responseText': 'Hi! :) How are you?'}])
# the followup question
self.assertEqual(self.rbg.getresponseformessages(messagetwo),
[{'responseText': 'How come?'}])
def test_updateconversationstate(self):
from datetime import time, tzinfo, datetime, timedelta
self.rbg.updateconversationstate('bob', 1, 1)
self.assertEqual(self.rbg.conversationstates['bob'][1]['mostrecentquestion'], 1)
self.assertIsInstance(self.rbg.conversationstates['bob'][1]['mostrecentinteraction'], datetime)
oldtimestamp = self.rbg.conversationstates['bob'][1]['mostrecentinteraction']
self.rbg.updateconversationstate('bob', 1, 999)
self.assertEqual(self.rbg.conversationstates['bob'][1]['mostrecentquestion'], 999)
self.assertNotEqual(oldtimestamp, self.rbg.conversationstates['bob'][1]['mostrecentinteraction'])
# test if conversationstate is correctly updated after incoming an message
def test_updatedconvstateaftermessage(self):
sampleconvstates = self.sd.getsampleconversationstates()
self.rbg.conversationstates = sampleconvstates
# valid example, should update conv state
message = MessageEntity('bob', 'Good!')
self.rbg.getresponseformessages(message)
self.assertEqual(self.rbg.conversationstates['bob'][1]['mostrecentquestion'], 124)
# invalid example, should not update conv state
message = MessageEntity('bob', 'I will!')
self.rbg.getresponseformessages(message)
self.assertEqual(self.rbg.conversationstates['bob'][1]['mostrecentquestion'], 124)
# invalid example, should not update conv state
message = MessageEntity('bob', '999')
self.rbg.getresponseformessages(message)
self.assertEqual(self.rbg.conversationstates['bob'][1]['mostrecentquestion'], 124)
def test_reinitialize(self):
sampleconvstates = self.sd.getsampleconversationstates()
self.rbg.conversationstates = sampleconvstates
self.rbg.reinitialize('bob')
self.assertEqual(self.rbg.conversationstates['bob'], {})
self.rbg.conversationstates = sampleconvstates
message = MessageEntity('bob', 'chatreset')
self.rbg.getresponseformessages(message)
self.assertEqual(self.rbg.conversationstates['bob'], {})
class ResponseBuilderGraph:
def __init__(self):
self.conversationstates = {}
# TODO: replace getting test messages with DB messages.
# insert the correct data struct messages into db first
self.sd = Sampledata()
self.messages = self.sd.getgraphmessages()
self.messagesdict = self.createmessagesdictbykey(self.messages)
self.conversationtrees = self.buildconversationtrees(self.messages)
self.RESETMESSAGE = 'chatreset'
# Create a dict representation of all the stored messages for quick
# lookup and references. messagedict =
# { msgkey: { entiremessage}, msgkey2: {entiremessage2}, .. }
def createmessagesdictbykey(self, messages):
messagedict = {}
for message in messages:
messagedict[message['key']] = message
return messagedict
def buildconversationtrees(self, messages):
conversationtrees = {}
for message in messages:
conversationtrees.setdefault(message['conv_id'], {})
conversationtrees[message['conv_id']][message['key']] = set(message['children'])
return conversationtrees
def is_child(self, conv_id, parent, child):
try:
return child in self.conversationtrees[conv_id][parent]
except Exception:
return False
def add_node(self, conv_id, node_id):
if node_id in self.conversationtrees[conv_id]:
return
else:
self.conversationtrees[conv_id][node_id] = Set([])
# will recursively delete a node and all its child components
# however, it will not delete references to its edges!
def remove_node(self, conv_id, node):
if conv_id in self.conversationtrees:
if node in self.conversationtrees[conv_id]:
if self.conversationtrees[conv_id][node]:
for childnode in self.conversationtrees[conv_id][node]:
self.remove_node(conv_id, childnode)
del self.conversationtrees[conv_id][node]
# should be called whenever a node is removed. Otherwise, edges are kept
# in place while the nodes no longer exist
def remove_edge(self, conv_id, edge):
for node in self.conversationtrees[conv_id]:
if edge in self.conversationtrees[conv_id][node]:
self.conversationtrees[conv_id][node].remove(edge)
break
def add_edge(self, conv_id, node, edge):
if edge in self.conversationtrees[conv_id][node]:
return
else:
self.conversationtrees[conv_id][node].add(edge)
def getrootnodes(self, messages):
rootnodes = {}
for message in messages:
if message['parent'] == 0:
rootnodes[message['conv_id']] = message['key']
return rootnodes
# The child nodes of the most recently asked question of a user are the
# msgs that warrant a reply. Function returns:
# conv_id : set(keys of all childnodes eligible for a reply) }
def getfollowupnodes(self, messageSender):
followupnodes = {}
convstate = self.conversationstates.setdefault(messageSender, {})
for conv_id in convstate:
childnodes = self.getchildnodes(conv_id, convstate[conv_id]['mostrecentquestion'])
if childnodes is not None:
followupnodes[conv_id] = childnodes
else:
followupnodes[conv_id] = None
return followupnodes
def getchildnodes(self, conv_id, node):
if conv_id in self.conversationtrees:
if node in self.conversationtrees[conv_id]:
return self.conversationtrees[conv_id][node]
return None
# Flattens the eligilbe msgs: the list of rootnodes and the list with sets
# of followupnodes. Returns [ msgkey, msgkey, msgkey, ...]
def geteligiblemessages(self, rootnodes, followupnodes):
eligiblemessages = []
for node in rootnodes:
eligiblemessages.append(rootnodes[node])
for childnodesets in followupnodes:
for node in followupnodes[childnodesets]:
eligiblemessages.append(node)
return eligiblemessages
# In order to find whether the incoming message warrants a response,
# we compare it only to messages that are eligible for a response.
# PROBLEMATIC: because of the way RE \b works, this has some problems when
# the sentence ends/begins with special characters. Example:
# r'\b' + 'Not great...' + r'\b' will not match 'xx Not great... xx'
# need to test impact of stripping characters before matching, but is nasty
# workaround
def getmessagematches(self, incomingmessage, eligiblemessages, messagedict):
matches = []
for msgkey in eligiblemessages:
loweredmessage = messagedict[msgkey]['qtext'].lower()
if (re.search(r'\b' + loweredmessage + r'\b', incomingmessage)
or loweredmessage == incomingmessage):
matches.append(msgkey)
return matches
def updateconversationstate(self, messageSender, conv_id, msgkey):
self.conversationstates.setdefault(messageSender, {})
self.conversationstates[messageSender].setdefault(conv_id, {})
self.conversationstates[messageSender][conv_id] = {'mostrecentinteraction': datetime.utcnow(),
'mostrecentquestion': msgkey }
def reinitialize(self, messageSender):
if messageSender in self.conversationstates:
self.conversationstates[messageSender] = {}
return
def getresponseformessages(self, message):
returnResponses = []
messageSender = message.getFrom()
try:
messagetext = message.getBody().lower()
except Exception, e:
print 'Fail getBody, will not work for Media messages:', e
return returnResponses
if messagetext == self.RESETMESSAGE:
self.reinitialize(messageSender)
return False
rootnodes = self.getrootnodes(self.messages)
followupnodes = self.getfollowupnodes(messageSender)
eligiblemessages = self.geteligiblemessages(rootnodes, followupnodes)
escapedmessage = message.replaceEscapedCharacters(messagetext)
matches = self.getmessagematches(escapedmessage, eligiblemessages, self.messagesdict)
if matches:
for match in matches:
self.updateconversationstate(messageSender, self.messagesdict[match]['conv_id'], match)
returnResponses.append({'responseText' : self.messagesdict[match]['rtext']})
return returnResponses
