//  This file (AbstractCompositeLimitTest.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 LGPL, 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.Collections.Generic;
using NUnit.Framework;

namespace IBBoard.Limits
{
	public abstract class AbstractCompositeLimitTest
	{
		[Test()]
		public void TestCompositeWithZeroLimits()
		{
			Assert.That(CreateCompositeLimitWithCollection(new List<ILimit>()).GetLimit(100), Is.EqualTo(0));
		}
		
		[Test()]
		public void TestCompositeWithOneLimitReturnsLimitValue()
		{
			NumericSizeConstrainedLimit limit = new NumericSizeConstrainedLimit(10);
			AbstractCompositeLimit compositeLimit = CreateCompositeLimitWithLimit(limit);
			Assert.That(compositeLimit.GetLimit(1), Is.EqualTo(limit.GetLimit(1)));
			Assert.That(compositeLimit.GetLimit(10), Is.EqualTo(limit.GetLimit(10)));
			Assert.That(compositeLimit.GetLimit(100), Is.EqualTo(limit.GetLimit(100)));
		}
		
		[Test()]
		public void TestCompositeWithMultipleLimitsReturnsCorrectValues()
		{
			List<ILimit> limits = new List<ILimit>();
			int sizeConstrainedLimitNum = 10;
			NumericSizeConstrainedLimit limit1 = new NumericSizeConstrainedLimit(sizeConstrainedLimitNum);
			limits.Add(limit1);
			int absoluteLimitNum = 5;
			AbsoluteNumericLimit limit2 = new AbsoluteNumericLimit(absoluteLimitNum);
			limits.Add(limit2);
			AbstractCompositeLimit compositeLimit = CreateCompositeLimitWithCollection(limits);
			Assert.That(compositeLimit.GetLimit(1), Is.EqualTo(GetMultipleLimitValue(1, sizeConstrainedLimitNum, absoluteLimitNum)));
			Assert.That(compositeLimit.GetLimit(10), Is.EqualTo(GetMultipleLimitValue(10, sizeConstrainedLimitNum, absoluteLimitNum)));
			Assert.That(compositeLimit.GetLimit(100), Is.EqualTo(GetMultipleLimitValue(100, sizeConstrainedLimitNum, absoluteLimitNum)));			
		}

		protected abstract AbstractCompositeLimit CreateCompositeLimitWithLimit(ILimit limit);
		protected abstract AbstractCompositeLimit CreateCompositeLimitWithCollection(List<ILimit> limits);
		protected abstract int GetMultipleLimitValue(int numberBeingLimited, int sizeConstrainedLimitNum, int absoluteLimitNum);
	}
}