ikarus/scheme/tests/tests-2.2-req.scm

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(add-tests-with-string-output "set!"
[(let ([x 12])
(set! x 13)
x) => "13\n"]
[(let ([x 12])
(set! x (fxadd1 x))
x) => "13\n"]
[(let ([x 12])
(let ([x #f]) (set! x 14))
x) => "12\n"]
[(let ([x 12])
(let ([y (let ([x #f]) (set! x 14))])
x)) => "12\n"]
[(let ([f #f])
(let ([g (lambda () f)])
(set! f 10)
(g))) => "10\n"]
[(let ([f (lambda (x)
(set! x (fxadd1 x))
x)])
(f 12)) => "13\n"]
[(let ([x 10])
(let ([f (lambda (x)
(set! x (fxadd1 x))
x)])
(cons x (f x)))) => "(10 . 11)\n"]
[(let ([t #f])
(let ([locative
(cons
(lambda () t)
(lambda (n) (set! t n)))])
((cdr locative) 17)
((car locative)))) => "17\n"]
[(let ([locative
(let ([t #f])
(cons
(lambda () t)
(lambda (n) (set! t n))))])
((cdr locative) 17)
((car locative))) => "17\n"]
[(let ([make-counter
(lambda ()
(let ([counter -1])
(lambda ()
(set! counter (fxadd1 counter))
counter)))])
(let ([c0 (make-counter)]
[c1 (make-counter)])
(c0)
(cons (c0) (c1)))) => "(1 . 0)\n"]
[(let ([fact #f])
(set! fact (lambda (n)
(if (fxzero? n)
1
(fx* n (fact (fxsub1 n))))))
(fact 5)) => "120\n"]
[(let ([fact #f])
((begin
(set! fact (lambda (n)
(if (fxzero? n)
1
(fx* n (fact (fxsub1 n))))))
fact)
5)) => "120\n"]
)