Blog.Logic.Core.Tests.ChatMessagesLogicTest.ShouldThrowExceptionWhenGettingFromUserIsNullOnMoreChatMessagesByName C# (CSharp) Method

        public void ShouldThrowExceptionWhenGettingFromUserIsNullOnMoreChatMessagesByName()
        {
            _chatMessageRepository = new Mock<IChatMessageRepository>();
            _chatMessageRepository.Setup(a => a.GetMoreChatMessages(It.IsAny<int>(), It.IsAny<int>(), It.IsAny<int>(), It.IsAny<int>()))
                .Returns(new List<ChatMessage>());

            _userRepository = new Mock<IUserRepository>();
            _userRepository.Setup(a => a.Find(It.IsAny<Expression<Func<User, bool>>>(), false)).Returns(new List<User>());

            _chatMessagesLogic = new ChatMessagesLogic(_chatMessageRepository.Object, _userRepository.Object);

            var result = Assert.Throws<BlogException>(() => 
                _chatMessagesLogic.GetMoreChatMessagesByUser("FooBar", "Drums", 15));
            Assert.AreEqual("No user found with username FooBar", result.Message);
        }