public void Neighbors_of_a_coordinate_are_the_adjacent_coordinates()
{
var coordiate = new MapCoordinate(34, 78);
var neighbours = coordiate.Neighbours().ToList();
Assert.Equal(4, neighbours.Count);
Assert.Contains(new MapCoordinate(34, 79), neighbours);
Assert.Contains(new MapCoordinate(34, 77), neighbours);
Assert.Contains(new MapCoordinate(33, 78), neighbours);
Assert.Contains(new MapCoordinate(35, 78), neighbours);
}
