private static Mock<ChatMessage> MockedChatMessage(Chat chat)
{
var chatMsg = new Mock<ChatMessage>();
chatMsg.SetupGet(c => c.FromHandle).Returns("test_user");
chatMsg.SetupGet(c => c.Body).Returns("$count");
chatMsg.SetupGet(c => c.Chat).Returns(chat);
chatMsg.SetupGet(c => c.Sender).Returns(MockedUser().Object);
return chatMsg;
}