public void NameFilterTest()
{
// instance
var exporter = new ConversationExporter();
exporter.ExportConversation("chat.txt", "chat.json");
var serializedConversation = new StreamReader(new FileStream("chat.json", FileMode.Open)).ReadToEnd();
var savedConversation = JsonConvert.DeserializeObject<Conversation>(serializedConversation);
var messages = savedConversation.messages.ToList();
TextFilter filter = new TextFilter();
string user = "******";
//actual
var actual1 = filter.NameFilter(messages, user);
var actualString1 = actual1[1].senderId;
//assert(actual == expected)
Assert.That(actualString1, Is.EqualTo("bob"));
}