ikarus/src/tests/bytevectors.ss

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(library (tests bytevectors)
(export test-bytevectors)
(import (ikarus) (tests framework))
(define (not-bytevector? x)
(not (bytevector? x)))
(define-tests test-bytevectors
[bytevector? (make-bytevector 1)]
[bytevector? (make-bytevector 1 17)]
[bytevector? (make-bytevector 10 -17)]
[not-bytevector? 'foo]
[not-bytevector? "hey"]
[not-bytevector? (current-output-port)]
[not-bytevector? (current-input-port)]
[not-bytevector? '#(2837 2398 239)]
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[zero? (bytevector-length (make-bytevector 0))]
[(lambda (x) (= x 100)) (bytevector-length (make-bytevector 100 -30))]
[(lambda (x) (equal? x '(-127 129 -1 255)))
(let ([b1 (make-bytevector 16 -127)]
[b2 (make-bytevector 16 255)])
(list
(bytevector-s8-ref b1 0)
(bytevector-u8-ref b1 0)
(bytevector-s8-ref b2 0)
(bytevector-u8-ref b2 0)))]
[(lambda (x) (equal? x '(-126 130 -10 246)))
(let ([b (make-bytevector 16 -127)])
(bytevector-s8-set! b 0 -126)
(bytevector-u8-set! b 1 246)
(list
(bytevector-s8-ref b 0)
(bytevector-u8-ref b 0)
(bytevector-s8-ref b 1)
(bytevector-u8-ref b 1)))]
[(lambda (x) (equal? x '(1 2 3 1 2 3 4 8)))
(let ([b (u8-list->bytevector '(1 2 3 4 5 6 7 8))])
(bytevector-copy! b 0 b 3 4)
(bytevector->u8-list b))]
[(lambda (x) (= x 17))
(bytevector-uint-ref
(u8-list->bytevector '(17))
0 'little 1)]
[(lambda (x) (= x 17))
(bytevector-uint-ref
(u8-list->bytevector '(17))
0 'big 1)]
[(lambda (x) (= x (+ 17 (* 54 256))))
(bytevector-uint-ref
(u8-list->bytevector '(17 54))
0 'little 2)]
[(lambda (x) (= x (+ 17 (* 54 256))))
(bytevector-uint-ref
(u8-list->bytevector (reverse '(17 54)))
0 'big 2)]
[(lambda (x) (= x (+ 17 (* 54 256) (* 98 256 256))))
(bytevector-uint-ref
(u8-list->bytevector '(17 54 98))
0 'little 3)]
[(lambda (x) (= x (+ 17 (* 54 256) (* 98 256 256))))
(bytevector-uint-ref
(u8-list->bytevector (reverse '(17 54 98)))
0 'big 3)]
[(lambda (x) (= x (+ 17 (* 54 256) (* 98 256 256) (* 120 256 256 256))))
(bytevector-uint-ref
(u8-list->bytevector '(17 54 98 120))
0 'little 4)]
[(lambda (x) (= x #x123897348738947983174893204982390489))
(bytevector-uint-ref
(u8-list->bytevector
'(#x89 #x04 #x39 #x82 #x49 #x20 #x93 #x48 #x17
#x83 #x79 #x94 #x38 #x87 #x34 #x97 #x38 #x12))
0 'little 18)]
[(lambda (x) (= x #x123897348738947983174893204982390489))
(bytevector-uint-ref
(u8-list->bytevector
(reverse
'(#x89 #x04 #x39 #x82 #x49 #x20 #x93 #x48 #x17
#x83 #x79 #x94 #x38 #x87 #x34 #x97 #x38 #x12)))
0 'big 18)]
[(lambda (x) (equal? x '(513 65283 513 513)))
(let ([b (u8-list->bytevector '(1 2 3 255 1 2 1 2))])
(bytevector->uint-list b 'little 2))]
[(lambda (x) (equal? x '(513 -253 513 513)))
(let ([b (u8-list->bytevector '(1 2 3 255 1 2 1 2))])
(bytevector->sint-list b 'little 2))]
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[(lambda (x) (equal? x '(#xfffffffffffffffffffffffffffffffd
-3
(253 255 255 255 255 255 255 255
255 255 255 255 255 255 255 255))))
(let ([b (make-bytevector 16 -127)])
(bytevector-uint-set! b 0 (- (expt 2 128) 3) 'little 16)
(list
(bytevector-uint-ref b 0 'little 16)
(bytevector-sint-ref b 0 'little 16)
(bytevector->u8-list b)))]
[(lambda (x) (equal? x '(#xfffffffffffffffffffffffffffffffd
-3
(255 255 255 255 255 255 255 255
255 255 255 255 255 255 255 253))))
(let ([b (make-bytevector 16 -127)])
(bytevector-uint-set! b 0 (- (expt 2 128) 3) 'big 16)
(list
(bytevector-uint-ref b 0 'big 16)
(bytevector-sint-ref b 0 'big 16)
(bytevector->u8-list b)))]
[(lambda (x) (equal? x '(1 2 3 4)))
(bytevector->u8-list '#vu8(1 2 3 4))]
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[(lambda (x) (= x #xFFFFFFFF))
(let ([b (make-bytevector 4 0)])
(bytevector-sint-set! b 0 -1 'little 4)
(bytevector-uint-ref b 0 'little 4))]
[(lambda (x) (= x #xFFFFFF00))
(let ([b (make-bytevector 4 0)])
(bytevector-sint-set! b 0 -256 'little 4)
(bytevector-uint-ref b 0 'little 4))]
[(lambda (x) (= x #xFFFF0000))
(let ([b (make-bytevector 4 0)])
(bytevector-sint-set! b 0 (- (expt 256 2)) 'little 4)
(bytevector-uint-ref b 0 'little 4))]
[(lambda (x) (= x #xFFFFFFFFFFFF0000))
(let ([b (make-bytevector 8 0)])
(bytevector-sint-set! b 0 (- (expt 256 2)) 'little 8)
(bytevector-uint-ref b 0 'little 8))]
[(lambda (x) (= x #xFFFFFFFF00000000))
(let ([b (make-bytevector 8 0)])
(bytevector-sint-set! b 0 (- (expt 256 4)) 'little 8)
(bytevector-uint-ref b 0 'little 8))]
[(lambda (x) (= x #xFF00000000000000))
(let ([b (make-bytevector 8 0)])
(bytevector-sint-set! b 0 (- (expt 256 7)) 'little 8)
(bytevector-uint-ref b 0 'little 8))]
[(lambda (x) (= x (- 1 (expt 2 63))))
(let ([b (make-bytevector 8 0)])
(bytevector-sint-set! b 0 (- 1 (expt 2 63)) 'little 8)
(bytevector-sint-ref b 0 'little 8))]
[(lambda (x) (= x #x7FFFFFFF))
(let ([b (make-bytevector 4 38)])
(bytevector-sint-set! b 0 (sub1 (expt 2 31)) 'little 4)
(bytevector-sint-ref b 0 'little 4))]
[(lambda (x) (= x #x-80000000))
(let ([b (make-bytevector 4 38)])
(bytevector-sint-set! b 0 (- (expt 2 31)) 'little 4)
(bytevector-sint-ref b 0 'little 4))]
[(lambda (x) (= x #x-100000000))
(let ([b (make-bytevector 5 38)])
(bytevector-sint-set! b 0 (- (expt 2 32)) 'little 5)
(bytevector-sint-ref b 0 'little 5))]
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[(lambda (x) (= x #xFFFFFFFF))
(let ([b (make-bytevector 4 0)])
(bytevector-sint-set! b 0 -1 'big 4)
(bytevector-uint-ref b 0 'big 4))]
[(lambda (x) (= x #xFFFFFF00))
(let ([b (make-bytevector 4 0)])
(bytevector-sint-set! b 0 -256 'big 4)
(bytevector-uint-ref b 0 'big 4))]
[(lambda (x) (= x #xFFFF0000))
(let ([b (make-bytevector 4 0)])
(bytevector-sint-set! b 0 (- (expt 256 2)) 'big 4)
(bytevector-uint-ref b 0 'big 4))]
[(lambda (x) (= x #xFFFFFFFFFFFF0000))
(let ([b (make-bytevector 8 0)])
(bytevector-sint-set! b 0 (- (expt 256 2)) 'big 8)
(bytevector-uint-ref b 0 'big 8))]
[(lambda (x) (= x #xFFFFFFFF00000000))
(let ([b (make-bytevector 8 0)])
(bytevector-sint-set! b 0 (- (expt 256 4)) 'big 8)
(bytevector-uint-ref b 0 'big 8))]
[(lambda (x) (= x #xFF00000000000000))
(let ([b (make-bytevector 8 0)])
(bytevector-sint-set! b 0 (- (expt 256 7)) 'big 8)
(bytevector-uint-ref b 0 'big 8))]
[(lambda (x) (= x (- 1 (expt 2 63))))
(let ([b (make-bytevector 8 0)])
(bytevector-sint-set! b 0 (- 1 (expt 2 63)) 'big 8)
(bytevector-sint-ref b 0 'big 8))]
[(lambda (x) (= x #x7FFFFFFF))
(let ([b (make-bytevector 4 38)])
(bytevector-sint-set! b 0 (sub1 (expt 2 31)) 'big 4)
(bytevector-sint-ref b 0 'big 4))]
[(lambda (x) (= x #x-80000000))
(let ([b (make-bytevector 4 38)])
(bytevector-sint-set! b 0 (- (expt 2 31)) 'big 4)
(bytevector-sint-ref b 0 'big 4))]
[(lambda (x) (= x #x-100000000))
(let ([b (make-bytevector 5 38)])
(bytevector-sint-set! b 0 (- (expt 2 32)) 'big 5)
(bytevector-sint-ref b 0 'big 5))]
[(lambda (x) (= x 65023))
(bytevector-u16-ref '#vu8(255 253) 0 'little)]
[(lambda (x) (= x 65533))
(bytevector-u16-ref '#vu8(255 253) 0 'big)]
[(lambda (x) (= x -513))
(bytevector-s16-ref '#vu8(255 253) 0 'little)]
[(lambda (x) (= x -3))
(bytevector-s16-ref '#vu8(255 253) 0 'big)]
))