public void AllUsersMessageCountTest() { List <ChatMessage> listOfMessages = new List <ChatMessage>(); ChatMessage chatMessageAdmin1 = new ChatMessage { eventName = "null", timeStamp = "null", userName = "******", userMessage = "null" }; ChatMessage chatMessageNazar = new ChatMessage { eventName = "null", timeStamp = "null", userName = "******", userMessage = "null" }; ChatMessage chatMessageAndrii = new ChatMessage { eventName = "null", timeStamp = "null", userName = "******", userMessage = "null" }; ChatMessage chatMessageAdmin2 = new ChatMessage { eventName = "null", timeStamp = "null", userName = "******", userMessage = "null" }; listOfMessages.Add(chatMessageAdmin1); listOfMessages.Add(chatMessageNazar); listOfMessages.Add(chatMessageAndrii); listOfMessages.Add(chatMessageAdmin2); string responseExpected = "Admin: 2 Messages; Nazar: 1 Messages; Andrii: 1 Messages; "; string actualResponse = AsynchronousSocketListener.displayAllUserMessageCount(listOfMessages); Assert.AreEqual(responseExpected, actualResponse, "Error"); }