public void can_find_distance_in_both_directions()
{
var a = new Vector4D(1, -2, -5, 0);
var b = new Vector4D(3, 5, 1, 9);
var expected = a.GetDistance(b);
var actual = b.GetDistance(a);
Assert.Equal(expected, actual);
}
public void can_find_distance()
{
var a = new Vector4D(1, -2, 3, 0);
var b = new Vector4D(4, 0, -3, 5);
var expected = Math.Sqrt(74);
var actual = a.GetDistance(b);
Assert.Equal(expected, actual);
}