public static void TestChatroom()
{
Chatroom chatroom = new Chatroom();
Participant George = new Beatle("George");
Participant Paul = new Beatle("Paul");
Participant Ringo = new Beatle("Ringo");
Participant John = new Beatle("John");
Participant Yoko = new NonBeatle("Yoko");
chatroom.Register(George);
chatroom.Register(Paul);
chatroom.Register(Ringo);
chatroom.Register(John);
chatroom.Register(Yoko);
var participantsByName = chatroom.GetParticipants();
Assert.True(participantsByName.ContainsKey("George") && participantsByName.ContainsKey("Paul") &&
participantsByName.ContainsKey("Ringo") && participantsByName.ContainsKey("John") && participantsByName.ContainsKey("Yoko"));
var ytj = Yoko.Send("John", "Hi John!", true);
StringAssert.AreEqualIgnoringCase(ytj["from"], "Yoko");
StringAssert.AreEqualIgnoringCase(ytj["to"], "John");
StringAssert.AreEqualIgnoringCase(ytj["msg"], "Hi John!");
var ptr = Paul.Send("Ringo", "All you need is love", true);
StringAssert.AreEqualIgnoringCase(ptr["from"], "Paul");
StringAssert.AreEqualIgnoringCase(ptr["to"], "Ringo");
StringAssert.AreEqualIgnoringCase(ptr["msg"], "All you need is love");
var rtg = Ringo.Send("George", "My sweet Lord", true);
StringAssert.AreEqualIgnoringCase(rtg["from"], "Ringo");
StringAssert.AreEqualIgnoringCase(rtg["to"], "George");
StringAssert.AreEqualIgnoringCase(rtg["msg"], "My sweet Lord");
var ptj = Paul.Send("John", "Can't buy me love", true);
StringAssert.AreEqualIgnoringCase(ptj["from"], "Paul");
StringAssert.AreEqualIgnoringCase(ptj["to"], "John");
StringAssert.AreEqualIgnoringCase(ptj["msg"], "Can't buy me love");
var jty = John.Send("Yoko", "My sweet love", true);
StringAssert.AreEqualIgnoringCase(jty["from"], "John");
StringAssert.AreEqualIgnoringCase(jty["to"], "Yoko");
StringAssert.AreEqualIgnoringCase(jty["msg"], "My sweet love");
}