public void TestNeighbours()
{
var v1 = new CubeCoordinates(0, 0, 0);
var v2 = v1.Neighbor((CoordinateDirectionFlat)1);
var v3 = v1.Neighbor((CoordinateDirectionPointy)1);
Assert.AreEqual(v2, v3);
Assert.AreEqual(CubeCoordinates.Direction(1), v2);
var v4 = v1.DiagonalNeighbor((CoordinateDirectionFlatDiagonal)1);
var v5 = v1.DiagonalNeighbor((CoordinateDirectionPointyDiagonal)1);
Assert.AreEqual(CubeCoordinates.Diagonals(1), v4);
Assert.AreEqual(v4, v5);
}