public void AddReplyTest()
{
//Arrange
var repo = new FakeMessageRepository();
var messageController = new MessageController(repo);
var message = repo.Messages[0];
var beforeCountR = message.Replies.Count;
// Act
messageController.AddReply("Nicolette", "Molitor", "*****@*****.**",
"I'll bring potatoes", message.MessageId);
//Assert
Assert.Equal(beforeCountR + 1, message.Replies.Count);
}