public void ShouldThrowExceptionWhenGettingMoreChatMessagesByIdFails()
{
_chatMessageRepository = new Mock<IChatMessageRepository>();
_chatMessageRepository.Setup(a => a.GetMoreChatMessages(It.IsAny<int>(), It.IsAny<int>(), It.IsAny<int>(), It.IsAny<int>()))
.Throws(new Exception());
_userRepository = new Mock<IUserRepository>();
_chatMessagesLogic = new ChatMessagesLogic(_chatMessageRepository.Object, _userRepository.Object);
Assert.Throws<BlogException>(() => _chatMessagesLogic.GetMoreChatMessagesByUser(1, 2, 15));
}