public void SubstractInsideTest()
{
var Space1 = new SpaceAssigner1D.Space(-3, +3);
var Space2 = new SpaceAssigner1D.Space(-2, +2);
var Spaces = Space1 - Space2;
Assert.AreEqual(2, Spaces.Length);
Assert.AreEqual(new SpaceAssigner1D.Space(-3, -2), Spaces[0]);
Assert.AreEqual(new SpaceAssigner1D.Space(+2, +3), Spaces[1]);
}