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48 lines
1.4 KiB
Racket
48 lines
1.4 KiB
Racket
#lang racket/base
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(require rackunit
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"../number.rkt"
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"../helper.rkt"
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"../reserved.rkt")
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#|
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approximates
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https://github.com/mbutterick/restructure/blob/master/test/Reserved.coffee
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|#
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(test-case
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"size should have a default count of 1"
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(check-equal? (size (+xreserved uint8)) 1))
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(test-case
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"size should allow custom counts and types"
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(check-equal? (size (+xreserved uint16be 10)) 20))
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(test-case
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"should decode"
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(parameterize ([current-input-port (open-input-bytes (bytes 0 0))])
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(define reserved (+xreserved uint16be))
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(check-equal? (decode reserved) (void))
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(check-equal? (pos (current-input-port)) 2)))
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(test-case
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"should decode with post-decode"
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(parameterize ([current-input-port (open-input-bytes (bytes 0 0))])
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(define reserved (+xreserved uint16be))
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(set-post-decode! reserved (λ (val) 42))
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(check-equal? (decode reserved) 42)
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(check-equal? (pos (current-input-port)) 2)))
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(test-case
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"should encode"
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(parameterize ([current-output-port (open-output-bytes)])
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(define reserved (+xreserved uint16be))
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(encode reserved #f)
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(check-equal? (dump (current-output-port)) (bytes 0 0))))
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(test-case
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"should encode with pre-encode"
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(parameterize ([current-output-port (open-output-bytes)])
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(define reserved (+xreserved uint32be))
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(set-pre-encode! reserved (λ (val) 42))
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(encode reserved #f)
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(check-equal? (dump (current-output-port)) (bytes 0 0 0 0)))) |