public void CropToContentTest()
        {
            BasicMap map = new BasicMap(8, 8, 2, Distance.MANHATTAN);

            for (int i = 1; i < map.Width - 1; i++)
            {
                for (int j = 1; j < map.Height - 1; j++)
                {
                    Coord c = new Coord(i, j);
                    map.SetTerrain(_factory.Generic(c, i + j));
                }
            }

            map = map.CropToContent();
            Assert.AreEqual(_map.Width - 2, map.Width);
            Assert.AreEqual(_map.Height - 2, map.Height);
            Assert.AreEqual(2, map.GetTerrain <BasicTerrain>(0, 0).Glyph);
        }