using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using Azimuth;
using Annulus.Broadphase;

namespace Annulus.UnitTests.Broadphase
{
    public class NaiveBroadphaseTests : UnitTestSharp.TestFixture
    {
        public void Basic()
        {
            var list = new List<int>() {
                0,
                1,
                2,
                3,
            };

            var pairs = new List<KeyValuePair<int, int>>(NaiveBroadphase<int>.AllUniquePairs(list));

            CheckEqual(6, pairs.Count());

            CheckEqual(new KeyValuePair<int, int>(0, 1), pairs[0]);
            CheckEqual(new KeyValuePair<int, int>(0, 2), pairs[1]);
            CheckEqual(new KeyValuePair<int, int>(0, 3), pairs[2]);
            CheckEqual(new KeyValuePair<int, int>(1, 2), pairs[3]);
            CheckEqual(new KeyValuePair<int, int>(1, 3), pairs[4]);
            CheckEqual(new KeyValuePair<int, int>(2, 3), pairs[5]);
        }

        public void Empty()
        {
            var list = new List<int>() {
                
            };

            var pairs = new List<KeyValuePair<int, int>>(NaiveBroadphase<int>.AllUniquePairs(list));

            CheckEqual(0, pairs.Count());
        }

        public void DuplicateKeys()
        {
            var list = new List<int>()
            {
                0,
                1,
                1,
                2,
            };

            var pairs = new List<KeyValuePair<int, int>>(NaiveBroadphase<int>.AllUniquePairs(list));

            CheckEqual(6, pairs.Count());

            CheckEqual(new KeyValuePair<int, int>(0, 1), pairs[0]);
            CheckEqual(new KeyValuePair<int, int>(0, 1), pairs[1]);
            CheckEqual(new KeyValuePair<int, int>(0, 2), pairs[2]);
            CheckEqual(new KeyValuePair<int, int>(1, 1), pairs[3]);
            CheckEqual(new KeyValuePair<int, int>(1, 2), pairs[4]);
            CheckEqual(new KeyValuePair<int, int>(1, 2), pairs[5]);
        }
    }
}