public void get_a_user_by_valid_id_should_success()
{
var fakeObject = new Mock<IUserDAL>();
fakeObject.Setup(x=>x.GetUser(It.IsAny<int>())).Returns(_user);
var res = fakeObject.Object.GetUser(3);
Assert.Equal(3,res.UserID);
Assert.Equal("tom",res.UserName);
Assert.Equal(true,res.UserIsActive);
}