Unit testing data annotations

There is little point of testing data annotations, if they are in code hard coded. but in case you have to:

my model definition:

    public class FilterModel
    {
        /// 

        /// Apply filter from date.
        /// 
        [DisplayFormat(ApplyFormatInEditMode = true, DataFormatString = "{0:dd/MM/yyyy}")]
        [Display(Name = "From date")]
        public DateTime FromDate { get; set; }

        /// 

        /// Apply filter to date.
        /// 
        [DisplayFormat(ApplyFormatInEditMode = true, DataFormatString = "{0:dd/MM/yyyy}")]
        [Display(Name = "To date")]
        public DateTime ToDate { get; set; }
        [Display(Name = "Branch")]
        public int BranchId { get; set; }
        [Display(Name = "Agent")]
        public int RsmId { get; set; }
        public List Branches { get; set; }
        public List Rsms { get; set; }
    }

as you can see I have some hard coded display names I would like to test.

 /// 

        /// Checks the filter contain correct data annotations.
        /// 
        [TestMethod]
        public void CheckFilterContainCorrectDataAnnotations()
        {
            var expectedDisplayName = "From date";
            var expectedToDate= "To date";
            var expectedBranchName = "Branch";
            var expectedAgentName = "Agent";

            var fromDateProperty = typeof(FilterModel).GetProperty("FromDate");
            var toDateProperty = typeof(FilterModel).GetProperty("ToDate");
            var branchProperty = typeof(FilterModel).GetProperty("BranchId");
            var agentProperty = typeof(FilterModel).GetProperty("RsmId");
            
            var fromDateActualName = GetDisplayName(fromDateProperty);
            var actualToDate = GetDisplayName(toDateProperty);
            var actualBranchName = GetDisplayName(branchProperty);
            var actualAgentName = GetDisplayName(agentProperty);
            
            Assert.AreEqual(expectedDisplayName,fromDateActualName);
            Assert.AreEqual(expectedToDate, actualToDate);
            Assert.AreEqual(expectedAgentName, actualAgentName);
            Assert.AreEqual(expectedBranchName, actualBranchName);
        }

Here is my test method to get data using data annotation.

        /// 

        /// Gets the display name.
        /// 
        /// The property.
        /// String of the property name
        public static string GetDisplayName(PropertyInfo property)
        {
            Object[] displayAttributes = property.GetCustomAttributes(typeof(DisplayAttribute), true);
            if (displayAttributes.Length == 1)
                return ((DisplayAttribute)displayAttributes[0]).Name;
            
            return property.Name.ToString(CultureInfo.InvariantCulture);
        }