public void ShouldAddHobby() { var dbResult = new Hobby { HobbyId = 4, HobbyName = "Fudging", UserId = 1, User = new User { UserId = 1, UserName = "******" } }; _hobbyRepository = new Mock<IHobbyRepository>(); _hobbyRepository.Setup(a => a.Add(It.IsAny<Hobby>())).Returns(dbResult); _hobbyLogic = new HobbyLogic(_hobbyRepository.Object); var result = _hobbyLogic.Add(new Common.Contracts.Hobby { HobbyId = 4, HobbyName = "Fudging", UserId = 1 }); Assert.IsNotNull(result); }