using Microsoft.VisualStudio.TestTools.UnitTesting;
using Sarand.Net.Standard.Base.Helpers;
using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Text;

namespace Sacs.UnitTests.Net.Standard.Base.Helpers
{
	//=======================================================================
	[TestClass]
	public class SacsRandomHelper_Tester
	{
		//-------------------------------------------------------------------
		// Random Helper.
		//-------------------------------------------------------------------
		// Fill byte array.
		[TestMethod]
		public void Fill_ByteArray()
		{
			int dataLength = 10;
			byte[] data = new byte[dataLength];
			Assert.IsNotNull(data);

			// Initial values should be zero.
			for (int i = 0; i < dataLength; i++)
				Assert.AreEqual(0, data[i]);

			SacsRandomHelper.Fill(data);

			// Sum of data values should no longer be zero.
			int total = 0;
			for (int i = 0; i < dataLength; i++)
				total += data[i];
			Assert.AreNotEqual(0, total);

		}

		//-------------------------------------------------------------------
		[TestMethod]
		public void GetInt32_ToExclusive()
		{
			for (int i = 1; i < 1000; i++)
			{
				int value = SacsRandomHelper.GetInt32(i);
				Assert.IsTrue(value >= 0);
				Assert.IsTrue(value < i);
			}
		}

		//-------------------------------------------------------------------
		[TestMethod]
		public void GetInt32_FromInclusive_ToExclusive()
		{
			for (int i = -100; i < 101; i++)
			{
				for (int j = i + 1; j < i + 100; j++)
				{
					int value = SacsRandomHelper.GetInt32(i, j);
					//Debug.WriteLine("Value: "+value);
					Assert.IsTrue(value >= i);
					Assert.IsTrue(value < j);
				}
			}
		}

		//-------------------------------------------------------------------
		[TestMethod]
		public void GetInt32_getRandomLengthNumber()
		{
			for (ushort i = 1; i < 13; i++)
			{
				for (int j = 0; j < 10; j++)
				{
					String value = SacsRandomHelper.getRandomLengthNumber(i);
					//Debug.WriteLine("Value: " + value);
					Assert.IsTrue(value.Length > 0);
					Assert.IsTrue(value.Length < i + 1);
				}
			}
		}

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