public void TestInfluencersEmpty()
{
Dictionary <string, HashSet <string> > followsGraph =
new Dictionary <string, HashSet <string> >();
List <string> influencers = SocialNetwork.Influencers(followsGraph);
Assert.IsTrue(influencers.Count == 0, "expected empty list");
}
//
// Main method of the program. Fetches a sample of tweets and prints some
// facts about it.
//
public static void Main()
{
List <Tweet> tweets;
try
{
tweets = TweetReader.ReadTweetsFromWeb(SAMPLE_SERVER);
}
catch (Exception e)
{
throw new Exception("Cannot read tweets", e);
}
// display some characteristics about the tweets
Console.WriteLine("fetched " + tweets.Count + " tweets");
HashSet <string> mentionedUsers = Extract.GetMentionedUsers(tweets);
Console.WriteLine("covers " + mentionedUsers.Count + " Twitter users");
Timespan span = Extract.GetTimespan(tweets);
Console.WriteLine("ranging from " + span.start + " to " + span.end);
// infer the follows graph
Dictionary <string, HashSet <string> > followsGraph =
SocialNetwork.GuessFollowsGraph(tweets);
Console.WriteLine("follows graph has " + followsGraph.Count + " nodes");
// print the top-N influencers
int count = 10;
List <string> influencers = SocialNetwork.Influencers(followsGraph);
foreach (string username in
influencers.GetRange(0, Math.Min(count, influencers.Count)))
{
Console.WriteLine(username);
}
}
public void TestInfluencers()
{
DateTime dt1 = DateTime.Parse("2016-02-17T10:00:00Z");
DateTime dt2 = DateTime.Parse("2016-02-17T10:00:03Z");
DateTime dt3 = DateTime.Parse("2016-02-17T10:00:06Z");
DateTime dt4 = DateTime.Parse("2016-02-17T10:00:05Z");
Tweet t1 = new Tweet(1, "ivan", "i follow @pavan", dt1);
Tweet t2 = new Tweet(2, "bappe", "I personally follow both .@pavan and @ivan", dt2);
Tweet t3 = new Tweet(3, "pavan", "I will always have a special place for @ivan ", dt3);
Tweet t4 = new Tweet(4, "hanan", "I will always have a special place for @iVAn and of course @bappe ", dt4);
List <Tweet> listt = new List <Tweet>()
{
t1, t2, t3, t4
};
Dictionary <string, HashSet <string> > followsGraph = SocialNetwork.GuessFollowsGraph(listt);
List <string> influencers = SocialNetwork.Influencers(followsGraph);
Assert.IsTrue(influencers[0] == "ivan", "ranked followers");
Assert.IsTrue(influencers[1] == "pavan", "ranked followers");
Assert.IsTrue(influencers[2] == "bappe", "ranked followers");
Assert.IsFalse(influencers.Count == 0, "expected non-empty list");
}
