public void IntersectionLeftTest()
{
var Space1 = new SpaceAssigner1D.Space(-3, +3);
var Space2 = new SpaceAssigner1D.Space(-6, -1);
Assert.AreEqual(new SpaceAssigner1D.Space(-3, -1), Space1.Intersection(Space2));
Assert.AreEqual(Space1.Intersection(Space2), Space2.Intersection(Space1));
}