elif choice=='2':
user1,user2 = raw_input("Enter the usernames of each user seperated by a tab:\t").split('\t')
c = createFriends(user1,user2,g,m)
if c.makeLinks():
print "Friendship link established"
else:
print "Either user doesn't exist or both names given are the same"
elif choice=='3':
print "Enter names seperated by Enter key. Press 0 to stop\n\n"
l=[]
while 1:
temp=raw_input("Enter name:\t")
if temp=='0':
break
l.append(temp)
d = checkConnectivity(l,g,m)
temp = d.check()
if temp==-1:
print "User doesn't exist"
elif temp==0:
print "Given network of users are not connected"
else:
print "Given network of users are connected"
elif choice=='4':
user1,user2 = raw_input("Enter the usernames of each user seperated by a tab:\t").split('\t')
e = getDegree(user1,user2,g,m)
temp = e.get()
if temp==-1:
print "User doesn't exist"
elif temp==0:
print "Given network of users are not connected"
else:
print "TEST CASE FAILED"
c = createFriends("Abraham Lincoln","Stephen Hawking",g,m)
if c.makeLinks():
print "Link added successfully"
else:
print "TEST CASE FAILED"
print "\n\nTesting connectivity:\n"
userlist=["Immanuel Kant","Bertrand Russel"]
d = checkConnectivity(userlist,g,m)
if d.check():
print "TEST CASE PASSED"
else:
print "TEST CASE FAILED"
userlist=["Elon Musk","Voltaire","Abraham Lincoln"]
d = checkConnectivity(userlist,g,m)
if not d.check():
print "TEST CASE PASSED"
else:
print "TEST CASE FAILED"
userlist=["Immanuel Kant","Bertrand Russel","Stephen Hawking","Steve Jobs"]
d = checkConnectivity(userlist,g,m)
if not d.check():
