public void Distant_Should()
{
var point1 = new PointI(1, 1, 1);
var point3 = new PointI(3, 3, 3);
var point123 = new PointI(1, 2, 3);
Assert.AreEqual(0, point1.GetDistance(point1));
Assert.AreEqual(2, point1.GetDistance(point3));
Assert.AreEqual(point1.GetDistance(point123), point123.GetDistance(point1));
}
