//  This file (ArraysTests.cs) is a part of the IBBoard.Tests project and is copyright 2010 IBBoard
// 
//  // The file and the library/program it is in are licensed and distributed, without warranty, under the GNU Affero GPL license, either version 3 of the License or (at your option) any later version. Please see COPYING for more information and the full license.
using System;
using NUnit.Framework;
using NUnit.Framework.SyntaxHelpers;
namespace IBBoard
{
	[TestFixture()]
	public class ArraysTests
	{
		private static readonly string STRING_ONE = "one";
		private static readonly string STRING_TWO = "two";
		private static readonly string STRING_THREE = "three";
		private static readonly string STRING_FOUR = "four";
		private static readonly string[] THREE_ITEM_ARRAY = new string[] {
			STRING_ONE,
			STRING_TWO,
			STRING_THREE
		};
		private static readonly string[] ONE_ITEM_ARRAY = new string[] { STRING_FOUR };
		
		[Test()]
		public void TestSubtractWithNoOverlapLeavesSameArray()
		{
			Assert.That(Arrays.Subtract(THREE_ITEM_ARRAY, ONE_ITEM_ARRAY), Is.EqualTo(THREE_ITEM_ARRAY));
			Assert.That(Arrays.Subtract(ONE_ITEM_ARRAY, THREE_ITEM_ARRAY), Is.EqualTo(ONE_ITEM_ARRAY));
		}
		
		[Test()]
		public void TestSubtractWithFullOverlapLeaveEmptyArray()
		{
			Assert.That(Arrays.Subtract(THREE_ITEM_ARRAY, THREE_ITEM_ARRAY), Has.Length(0));
			Assert.That(Arrays.Subtract(ONE_ITEM_ARRAY, ONE_ITEM_ARRAY), Has.Length(0));
		}
	}
}