public void PuzzleExample_CountsTreesCorrectly()
        {
            var slope = new Slope(PuzzleExample);

            slope.CountTreesOnDescent(Slope.FirstSledAngle).Should().Be(7);
        }
        public void Puzzle1_CountTrees_UsingFirstAngle()
        {
            var slope = new Slope(Input.Day03);

            slope.CountTreesOnDescent(Slope.FirstSledAngle).Should().Be(211);
        }