using System;
using System.Text;
using System.Collections.Generic;
using NUnit.Framework;
using System.Linq;
using Sarand.Net.Standard.Base.Data;

namespace Sacs.UnitTests.Net.Standard.Base.Data
{
	[TestFixture]
	public class SacsAesIvCrypter_Tester
	{
		// --- Data Members ---

		private static Random random = new Random();

		// --- Tests ---

		[Test]
		public void SacsAesIvCrypter_Test ()
		{
			for (int i = 0; i < 200; i++)
			{
				String data = RandomString(random.Next(10, 2048), true);
				int dataLength = data.Length;
				String key = RandomString(random.Next(10, 128), true);
				int keyLength = key.Length;
				String encrypted = SacsAesIvCrypter.Encrypt(data, key);
				int encryptedLength = encrypted.Length;
				Assert.That(SacsAesIvCrypter.Decrypt(encrypted, key), Is.EqualTo(data));
			}
		}

		// --- Utilities ---

		/// <summary>Generate random alphanumeric string</summary>
		private static String RandomString (int length, bool includeLowerCase = true, bool includeSymbols = true)
		{
			String chars = "ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
			if (includeLowerCase) chars += "abcdefghijklmnopqrstuvwxyz";
			if (includeSymbols) chars += "`¬!\"£$%^&*()-=_+{}[];:'@#~<>?/.,\\| ";
			return new string(Enumerable.Repeat(chars, length).Select(s => s[random.Next(s.Length)]).ToArray());
		}

		// --- The End ---
	}
}