public void CPreZeroTest()
        {
            var arena = new Arena();

            arena.AddPlayerZeroNode(0);
            arena.AddPlayerOneNode(1);
            arena.AddPlayerZeroNode(2);
            arena.AddEdge(0, 1);
            arena.AddEdge(1, 2);
            arena.AddEdge(1, 1);
            arena.AddEdge(2, 0);

            var zeroSet = new HashSet <int>();

            zeroSet.Add(0);

            var twoSet = new HashSet <int>();

            twoSet.Add(2);

            var twoZeroSet = new HashSet <int>();

            twoZeroSet.Add(0);
            twoZeroSet.Add(2);

            Assert.IsTrue(arena.CPreZero(twoSet).getWinningRegion().Count == 0);
            Assert.IsTrue(arena.CPreZero(twoZeroSet).getWinningRegion().Count == 1 && arena.CPreZero(twoZeroSet).getWinningRegion().Contains(2));
        }
        public void CPreZeroTest()
        {
            var arena = new Arena();
            arena.AddPlayerZeroNode(0);
            arena.AddPlayerOneNode(1);
            arena.AddPlayerZeroNode(2);
            arena.AddEdge(0, 1);
            arena.AddEdge(1, 2);
            arena.AddEdge(1, 1);
            arena.AddEdge(2, 0);

            var zeroSet = new HashSet<int>();
            zeroSet.Add(0);

            var twoSet = new HashSet<int>();
            twoSet.Add(2);

            var twoZeroSet = new HashSet<int>();
            twoZeroSet.Add(0);
            twoZeroSet.Add(2);

            Assert.IsTrue(arena.CPreZero(twoSet).getWinningRegion().Count == 0);
            Assert.IsTrue(arena.CPreZero(twoZeroSet).getWinningRegion().Count == 1 && arena.CPreZero(twoZeroSet).getWinningRegion().Contains(2));
        }