using System;
using Microsoft.VisualStudio.TestTools.UnitTesting;
using Sarand.Core.Base;

namespace Sarand.PatientMgr.Tests.Core.Base
{
	//=======================================================================
	[TestClass]
	public class DateTimeRef
	{
		//-------------------------------------------------------------------
		[TestMethod]
		public void DateTime_RefParam()
		{
			DateTime? value = new DateTime(2019, 6, 1);
			Assert.AreEqual("1-Jun-2019", DateUtil.Format((DateTime)value,"d-MMM-yyyy"));

			IncrementDate((DateTime)value, 1);
			Assert.AreEqual("1-Jun-2019", DateUtil.Format((DateTime)value, "d-MMM-yyyy"));

			IncrementDateRef(ref value, 1);
			Assert.AreEqual("2-Jun-2019", DateUtil.Format((DateTime)value, "d-MMM-yyyy"));

			DateTime? nullDate = null;
			IncrementDateRef(ref nullDate, 1);
		}
		private void IncrementDate(DateTime value, int days)
		{
			value = DateUtil.IncrementDate(value, days);
		}
		private void IncrementDateRef(ref DateTime? value, int days)
		{
			if (value != null)
				value = DateUtil.IncrementDate((DateTime)value, days);
		}

		//-------------------------------------------------------------------
	}
	//=======================================================================
}