115 lines
4.2 KiB
Racket
115 lines
4.2 KiB
Racket
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;; These are true for beginner, but the operators are syntax, so
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;; arity-test doesn't work.
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(htdp-syntax-test #'local)
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(htdp-syntax-test #'(local))
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(htdp-syntax-test #'(local ()))
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(htdp-syntax-test #'(local 1))
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(htdp-syntax-test #'(local 1 1))
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(htdp-syntax-test #'(local () 1 2))
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(htdp-syntax-test #'(local [1] 1 2))
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(htdp-syntax-test #'(local [(+ 1 2)] 1))
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(htdp-syntax-test #'(local [(define x)] 1))
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(htdp-syntax-test #'(local [(lambda (x) x)] 1))
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(htdp-syntax-test #'(local [(define x 1) (define x 2)] 1))
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(htdp-syntax-test #'(local [(define (x a) 12) (+ 1 2)] 1))
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(htdp-err/rt-test (local [(define x y) (define y 5)] 10) exn:fail:contract:variable?)
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(htdp-test 1 'local (local () 1))
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(htdp-test 5 'local (local [(define y 5) (define x y)] x))
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(htdp-test #t 'local (local [(define (even n) (if (zero? n) true (odd (sub1 n))))
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(define (odd n) (if (zero? n) false (even (sub1 n))))]
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(even 100)))
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(htdp-test 19 (local [(define (f x) (+ x 10))] f) 9)
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(htdp-test 16 'local (local [(define (f x) (+ x 10))] (f 6)))
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(htdp-syntax-test #'letrec)
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(htdp-syntax-test #'(letrec))
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(htdp-syntax-test #'(letrec ()))
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(htdp-syntax-test #'(letrec 1 2))
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(htdp-syntax-test #'(letrec 1 2 3))
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(htdp-syntax-test #'(letrec (10) 1))
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(htdp-syntax-test #'(letrec ([x]) 1))
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(htdp-syntax-test #'(letrec ([x 2 3]) 1))
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(htdp-syntax-test #'(letrec ([x 5] 10) 1))
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(htdp-syntax-test #'(letrec ([1 5]) 1))
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(htdp-syntax-test #'(letrec ([1 5 6]) 1))
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(htdp-syntax-test #'(letrec ([x 5]) 1 2))
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(htdp-syntax-test #'(letrec ([x 5][x 6]) 1))
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(htdp-err/rt-test (letrec ([x y] [y 5]) 10) exn:fail:contract:variable?)
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(htdp-test 1 'letrec (letrec () 1))
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(htdp-test 5 'letrec (letrec ([y 5][x y]) x))
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(htdp-test #t 'letrec (letrec ([even (lambda (n) (if (zero? n) true (odd (sub1 n))))]
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[odd (lambda (n) (if (zero? n) false (even (sub1 n))))])
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(even 100)))
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(htdp-test 19 (letrec ([f (lambda (x) (+ x 10))]) f) 9)
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(htdp-test 16 'letrec (letrec ([f (lambda (x) (+ x 10))]) (f 6)))
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(htdp-syntax-test #'let)
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(htdp-syntax-test #'(let))
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(htdp-syntax-test #'(let ()))
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(htdp-syntax-test #'(let 1 2))
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(htdp-syntax-test #'(let 1 2 3))
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(htdp-syntax-test #'(let (10) 1))
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(htdp-syntax-test #'(let ([x]) 1))
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(htdp-syntax-test #'(let ([x 2 3]) 1))
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(htdp-syntax-test #'(let ([x 5] 10) 1))
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(htdp-syntax-test #'(let ([1 5]) 1))
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(htdp-syntax-test #'(let ([1 5 6]) 1))
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(htdp-syntax-test #'(let ([x 5]) 1 2))
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(htdp-syntax-test #'(let ([x 5][x 6]) 1))
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(htdp-test 1 'let (let () 1))
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(htdp-test 5 'let (let ([y 5]) (let ([x y]) x)))
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(htdp-test 6 'let (let ([y 6]) (let ([y 10][x y]) x)))
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(htdp-test 19 (let ([f (lambda (x) (+ x 10))]) f) 9)
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(htdp-test 16 'let (let ([f (lambda (x) (+ x 10))]) (f 6)))
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(htdp-syntax-test #'let*)
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(htdp-syntax-test #'(let*))
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(htdp-syntax-test #'(let* ()))
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(htdp-syntax-test #'(let* 1 2))
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(htdp-syntax-test #'(let* 1 2 3))
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(htdp-syntax-test #'(let* (10) 1))
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(htdp-syntax-test #'(let* ([x]) 1))
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(htdp-syntax-test #'(let* ([x 2 3]) 1))
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(htdp-syntax-test #'(let* ([x 5] 10) 1))
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(htdp-syntax-test #'(let* ([1 5]) 1))
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(htdp-syntax-test #'(let* ([1 5 6]) 1))
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(htdp-syntax-test #'(let* ([x 5]) 1 2))
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(htdp-test 1 'let* (let* () 1))
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(htdp-test 6 'let* (let* ([x 5][x 6]) x))
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(htdp-test 9 'let* (let* ([x 8][x (add1 x)]) x))
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(htdp-test 5 'let* (let* ([y 5]) (let* ([x y]) x)))
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(htdp-test 10 'let* (let* ([y 6]) (let* ([y 10][x y]) x)))
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(htdp-test 19 (let* ([f (lambda (x) (+ x 10))]) f) 9)
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(htdp-test 16 'let* (let* ([f (lambda (x) (+ x 10))]) (f 6)))
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(htdp-test 7779 'time (time 7779))
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(htdp-syntax-test #'time)
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(htdp-syntax-test #'(time))
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(htdp-syntax-test #'(time 1 2))
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(htdp-syntax-test #'(time (define x 5)))
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(htdp-err/rt-test (foldr car 2 '(1 2 3))
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"foldr : first argument must be a <procedure> that accepts two arguments, given #<procedure:car>")
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(htdp-err/rt-test (foldl car 2 '(1 2 3))
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"foldl : first argument must be a <procedure> that accepts two arguments, given #<procedure:car>")
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(htdp-err/rt-test (build-string 2 add1)
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"build-string : second argument must be a <procedure> that produces a <char>, given #<procedure:add1>, which produced 1 for 0")
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(htdp-test 0 '+ (+))
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(htdp-test 1 '+ (+ 1))
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(htdp-test 1 '* (*))
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(htdp-test 1 '* (* 1))
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;(htdp-test (-) exn:application:arity?)
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;(htdp-err/rt-test (/) exn:application:arity?)
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;(htdp-test 1 (/ 1) exn:application:arity?)
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