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54 lines
1.9 KiB
Racket
54 lines
1.9 KiB
Racket
#lang restructure/racket
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(require "bitfield.rkt" "number.rkt" "stream.rkt" "buffer.rkt" rackunit racket/match)
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#|
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approximates
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https://github.com/mbutterick/restructure/blob/master/test/Bitfield.coffee
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|#
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;describe 'Bitfield', ->
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; bitfield = new Bitfield uint8, ['Jack', 'Kack', 'Lack', 'Mack', 'Nack', 'Oack', 'Pack', 'Quack']
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; JACK = 1 << 0
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; KACK = 1 << 1
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; LACK = 1 << 2
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; MACK = 1 << 3
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; NACK = 1 << 4
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; OACK = 1 << 5
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; PACK = 1 << 6
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; QUACK = 1 << 7
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(define bitfield (+Bitfield uint8 '(Jack Kack Lack Mack Nack Oack Pack Quack)))
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(match-define (list JACK KACK LACK MACK NACK OACK PACK QUACK)
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(map (curry arithmetic-shift 1) (range 8)))
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;
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; it 'should have the right size', ->
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; bitfield.size().should.equal 1
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(check-equal? (send bitfield size) 1)
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;
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; it 'should decode', ->
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; stream = new DecodeStream new Buffer [JACK | MACK | PACK | NACK | QUACK]
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; bitfield.decode(stream).should.deep.equal
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; Jack: yes, Kack: no, Lack: no, Mack: yes, Nack: yes, Oack: no, Pack: yes, Quack: yes
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(let ([stream (+DecodeStream (+Buffer (list (bitwise-ior JACK MACK PACK NACK QUACK))))])
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(for/and ([(k v) (in-hash (send bitfield decode stream))])
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(check-equal? v (hash-ref #hash((Quack . #t) (Nack . #t) (Lack . #f) (Oack . #f) (Pack . #t) (Mack . #t) (Jack . #t) (Kack . #f)) k))))
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;
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; it 'should encode', (done) ->
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; stream = new EncodeStream
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; stream.pipe concat (buf) ->
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; buf.should.deep.equal new Buffer [JACK | MACK | PACK | NACK | QUACK]
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; done()
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;
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; bitfield.encode stream, Jack: yes, Kack: no, Lack: no, Mack: yes, Nack: yes, Oack: no, Pack: yes, Quack: yes
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(let ([stream (+EncodeStream)])
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(define h #hash((Quack . #t) (Nack . #t) (Lack . #f) (Oack . #f) (Pack . #t) (Mack . #t) (Jack . #t) (Kack . #f)))
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(send bitfield encode stream h)
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(check-equal? (send stream dump) (+Buffer (list (bitwise-ior JACK MACK PACK NACK QUACK)))))
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