test TwoRings
    deployment:         :TwoRings
    assert:
        OneToTwo.Contains(1,1);
        not TwoToThree.Contains(1,1);
        not OneToTwo.Contains(2,2);
        TwoToThree.Contains(2,2);
        fails Ring\Ring.Contains(0,0);
        fails with "Unable to evaluate 'InnerRadius' on class Ring"
            Ring\Ring.Contains(1,1)