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typesetting/pitfall/restructure/array-test.rkt

173 lines
6.1 KiB
Racket

#lang restructure/racket
7 years ago
(require "array.rkt" "stream.rkt" "number.rkt" "buffer.rkt" rackunit)
#|
approximates
https://github.com/mbutterick/restructure/blob/master/test/Array.coffee
|#
;describe 'Array', ->
; describe 'decode', ->
; it 'should decode fixed length', ->
; stream = new DecodeStream new Buffer [1, 2, 3, 4, 5]
; array = new ArrayT uint8, 4
; array.decode(stream).should.deep.equal [1, 2, 3, 4]
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(let ([stream (+DecodeStream (+Buffer '(1 2 3 4 5)))]
[array (+Array uint8 4)])
(check-equal? (send array decode stream) '(1 2 3 4)))
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; it 'should decode fixed amount of bytes', ->
; stream = new DecodeStream new Buffer [1, 2, 3, 4, 5]
; array = new ArrayT uint16, 4, 'bytes'
; array.decode(stream).should.deep.equal [258, 772]
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(let ([stream (+DecodeStream (+Buffer '(1 2 3 4 5)))]
[array (+Array uint16be 4 'bytes)])
(check-equal? (send array decode stream) '(258 772)))
; it 'should decode length from parent key', ->
; stream = new DecodeStream new Buffer [1, 2, 3, 4, 5]
; array = new ArrayT uint8, 'len'
; array.decode(stream, len: 4).should.deep.equal [1, 2, 3, 4]
;
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(let ([stream (+DecodeStream (+Buffer '(1 2 3 4 5)))]
[array (+Array uint8 4 'len)])
(check-equal? (send array decode stream (mhash 'len 4)) '(1 2 3 4)))
; it 'should decode amount of bytes from parent key', ->
; stream = new DecodeStream new Buffer [1, 2, 3, 4, 5]
; array = new ArrayT uint16, 'len', 'bytes'
; array.decode(stream, len: 4).should.deep.equal [258, 772]
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(let ([stream (+DecodeStream (+Buffer '(1 2 3 4 5)))]
[array (+Array uint16be 'len 'bytes)])
(check-equal? (send array decode stream (mhash 'len 4)) '(258 772)))
; it 'should decode length as number before array', ->
; stream = new DecodeStream new Buffer [4, 1, 2, 3, 4, 5]
; array = new ArrayT uint8, uint8
; array.decode(stream).should.deep.equal [1, 2, 3, 4]
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(let ([stream (+DecodeStream (+Buffer '(4 1 2 3 4 5)))]
[array (+Array uint8 uint8)])
(check-equal? (send array decode stream) '(1 2 3 4)))
; it 'should decode amount of bytes as number before array', ->
; stream = new DecodeStream new Buffer [4, 1, 2, 3, 4, 5]
; array = new ArrayT uint16, uint8, 'bytes'
; array.decode(stream).should.deep.equal [258, 772]
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(let ([stream (+DecodeStream (+Buffer '(4 1 2 3 4 5)))]
[array (+Array uint16be uint8 'bytes)])
(check-equal? (send array decode stream) '(258 772)))
; it 'should decode length from function', ->
; stream = new DecodeStream new Buffer [1, 2, 3, 4, 5]
; array = new ArrayT uint8, -> 4
; array.decode(stream).should.deep.equal [1, 2, 3, 4]
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(let ([stream (+DecodeStream (+Buffer '(1 2 3 4 5)))]
[array (+Array uint8 (λ _ 4))])
(check-equal? (send array decode stream) '(1 2 3 4)))
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; it 'should decode amount of bytes from function', ->
; stream = new DecodeStream new Buffer [1, 2, 3, 4, 5]
; array = new ArrayT uint16, (-> 4), 'bytes'
; array.decode(stream).should.deep.equal [258, 772]
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(let ([stream (+DecodeStream (+Buffer '(1 2 3 4 5)))]
[array (+Array uint16be (λ _ 4) 'bytes)])
(check-equal? (send array decode stream) '(258 772)))
; it 'should decode to the end of the parent if no length is given', ->
; stream = new DecodeStream new Buffer [1, 2, 3, 4, 5]
; array = new ArrayT uint8
; array.decode(stream, _length: 4, _startOffset: 0).should.deep.equal [1, 2, 3, 4]
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(let ([stream (+DecodeStream (+Buffer '(1 2 3 4 5)))]
[array (+Array uint8)])
(check-equal? (send array decode stream (mhash '_length 4 '_startOffset 0)) '(1 2 3 4)))
; it 'should decode to the end of the stream if no parent and length is given', ->
; stream = new DecodeStream new Buffer [1, 2, 3, 4]
; array = new ArrayT uint8
; array.decode(stream).should.deep.equal [1, 2, 3, 4]
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(let ([stream (+DecodeStream (+Buffer '(1 2 3 4)))]
[array (+Array uint8)])
(check-equal? (send array decode stream) '(1 2 3 4)))
; describe 'size', ->
; it 'should use array length', ->
; array = new ArrayT uint8, 10
; array.size([1, 2, 3, 4]).should.equal 4
(let ([array (+Array uint8 10)])
(check-equal? (send array size '(1 2 3 4)) 4))
7 years ago
; it 'should add size of length field before string', ->
; array = new ArrayT uint8, uint8
; array.size([1, 2, 3, 4]).should.equal 5
;
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(let ([array (+Array uint8 uint8)])
(check-equal? (send array size '(1 2 3 4)) 5))
; it 'should use defined length if no value given', ->
; array = new ArrayT uint8, 10
; array.size().should.equal 10
(let ([array (+Array uint8 10)])
(check-equal? (send array size) 10))
; describe 'encode', ->
; it 'should encode using array length', (done) ->
; stream = new EncodeStream
; stream.pipe concat (buf) ->
; buf.should.deep.equal new Buffer [1, 2, 3, 4]
; done()
;
; array = new ArrayT uint8, 10
; array.encode(stream, [1, 2, 3, 4])
; stream.end()
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(let ([stream (+EncodeStream)]
[array (+Array uint8 10)])
(send array encode stream '(1 2 3 4))
(check-equal? (send stream dump) (+Buffer '(1 2 3 4))))
;
; it 'should encode length as number before array', (done) ->
; stream = new EncodeStream
; stream.pipe concat (buf) ->
; buf.should.deep.equal new Buffer [4, 1, 2, 3, 4]
; done()
;
; array = new ArrayT uint8, uint8
; array.encode(stream, [1, 2, 3, 4])
; stream.end()
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(let ([stream (+EncodeStream)]
[array (+Array uint8 uint8)])
(send array encode stream '(1 2 3 4))
(check-equal? (send stream dump) (+Buffer '(4 1 2 3 4))))
;; todo: needs pointer
; it 'should add pointers after array if length is encoded at start', (done) ->
; stream = new EncodeStream
; stream.pipe concat (buf) ->
; buf.should.deep.equal new Buffer [4, 5, 6, 7, 8, 1, 2, 3, 4]
; done()
;
; array = new ArrayT new Pointer(uint8, uint8), uint8
; array.encode(stream, [1, 2, 3, 4])
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; stream.end()
#;(let ([stream (+EncodeStream)]
[array (+Array (+Pointer uint8 uint8) uint8)])
(send array encode stream '(1 2 3 4))
(check-equal? (send stream dump) (+Buffer '(4 5 6 7 8 1 2 3 4))))