lazy-array → stream

main
Matthew Butterick 5 years ago
parent 3635fff328
commit 0c75a60f8a

@ -14,7 +14,7 @@ https://github.com/mbutterick/restructure/blob/master/test/LazyArray.coffee
|#
(test-case
"lazy-array: decode should decode items lazily"
"stream: decode should decode items lazily"
(parameterize ([current-input-port (open-input-bytes (bytes 1 2 3 4 5))])
(define xla (x:stream uint8 4))
(define arr (decode xla))
@ -26,7 +26,7 @@ https://github.com/mbutterick/restructure/blob/master/test/LazyArray.coffee
(check-equal? (stream-ref arr 3) 4)))
(test-case
"lazy-array: decode should decode items lazily with post-decode"
"stream: decode should decode items lazily with post-decode"
(parameterize ([current-input-port (open-input-bytes (bytes 1 2 3 4 5))])
(define xla (x:stream uint8 4 #:post-decode (λ (str) (stream-map (λ (i) (* 2 i)) str))))
(define arr (decode xla))
@ -39,35 +39,35 @@ https://github.com/mbutterick/restructure/blob/master/test/LazyArray.coffee
(check-equal? (stream-ref arr 3) 8)))
(test-case
"lazy-array: should be able to convert to an array"
"stream: should be able to convert to an array"
(parameterize ([current-input-port (open-input-bytes (bytes 1 2 3 4 5))])
(define xla (x:stream uint8 4))
(define arr (decode xla))
(check-equal? (stream->list arr) '(1 2 3 4))))
(test-case
"lazy-array: decode should decode length as number before array"
"stream: decode should decode length as number before array"
(parameterize ([current-input-port (open-input-bytes (bytes 4 1 2 3 4 5))])
(define xla (x:stream uint8 uint8))
(define arr (decode xla))
(check-equal? (stream->list arr) '(1 2 3 4))))
(test-case
"lazy-array: size should work with xlazy-arrays"
"stream: size should work with xlazy-arrays"
(parameterize ([current-input-port (open-input-bytes (bytes 1 2 3 4 5))])
(define xla (x:stream uint8 4))
(define arr (decode xla))
(check-equal? (send xla x:size arr) 4)))
(test-case
"lazy-array: encode should work with xlazy-arrays"
"stream: encode should work with xlazy-arrays"
(parameterize ([current-input-port (open-input-bytes (bytes 1 2 3 4 5))])
(define xla (x:stream uint8 4))
(define arr (decode xla))
(check-equal? (encode xla arr #f) (bytes 1 2 3 4))))
(test-case
"lazy-array: encode should work with xlazy-arrays with pre-encode"
"stream: encode should work with xlazy-arrays with pre-encode"
(parameterize ([current-input-port (open-input-bytes (bytes 1 2 3 4 5))])
(define xla (x:stream uint8 4 #:pre-encode (λ (str) (stream-map (λ (val) (* 2 val)) str))))
(define arr (decode xla))

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