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typesetting/pitfall/restructure/stream-test.rkt

160 lines
4.8 KiB
Racket

#lang restructure/racket
(require "number.rkt" "buffer.rkt" "stream.rkt" rackunit)
#|
approximates
https://github.com/mbutterick/restructure/blob/master/test/DecodeStream.coffee
|#
;describe 'DecodeStream', ->
; it 'should read a buffer', ->
; buf = new Buffer [1,2,3]
; stream = new DecodeStream buf
; stream.readBuffer(buf.length).should.deep.equal new Buffer [1,2,3]
7 years ago
(let ()
(define buf (+Buffer '(1 2 3)))
(define stream (+DecodeStream buf))
(check-equal? (send stream readBuffer (*length buf)) (+Buffer '(1 2 3))))
;
; it 'should readUInt16BE', ->
; buf = new Buffer [0xab, 0xcd]
; stream = new DecodeStream buf
; stream.readUInt16BE().should.deep.equal 0xabcd
7 years ago
(let ()
(define buf (+Buffer '(#xab #xcd)))
(define stream (+DecodeStream buf))
(check-equal? (send stream readUInt16BE) #xabcd))
;
; it 'should readUInt16LE', ->
; buf = new Buffer [0xab, 0xcd]
; stream = new DecodeStream buf
; stream.readUInt16LE().should.deep.equal 0xcdab
7 years ago
(let ()
(define buf (+Buffer '(#xab #xcd)))
(define stream (+DecodeStream buf))
(check-equal? (send stream readUInt16LE) #xcdab))
;
; it 'should readUInt24BE', ->
; buf = new Buffer [0xab, 0xcd, 0xef]
; stream = new DecodeStream buf
; stream.readUInt24BE().should.deep.equal 0xabcdef
7 years ago
(let ()
(define buf (+Buffer '(#xab #xcd #xef)))
(define stream (+DecodeStream buf))
(check-equal? (send stream readUInt24BE) #xabcdef))
;
; it 'should readUInt24LE', ->
; buf = new Buffer [0xab, 0xcd, 0xef]
; stream = new DecodeStream buf
; stream.readUInt24LE().should.deep.equal 0xefcdab
7 years ago
(let ()
(define buf (+Buffer '(#xab #xcd #xef)))
(define stream (+DecodeStream buf))
(check-equal? (send stream readUInt24LE) #xefcdab))
;
; it 'should readInt24BE', ->
; buf = new Buffer [0xff, 0xab, 0x24]
; stream = new DecodeStream buf
; stream.readInt24BE().should.deep.equal -21724
7 years ago
(let ()
(define buf (+Buffer '(#xff #xab #x24)))
(define stream (+DecodeStream buf))
(check-equal? (send stream readInt24BE) -21724))
;
; it 'should readInt24LE', ->
; buf = new Buffer [0x24, 0xab, 0xff]
; stream = new DecodeStream buf
; stream.readInt24LE().should.deep.equal -21724
7 years ago
(let ()
(define buf (+Buffer '(#x24 #xab #xff)))
(define stream (+DecodeStream buf))
(check-equal? (send stream readInt24LE) -21724))
;
; describe 'readString', ->
; it 'should decode ascii by default', ->
; buf = new Buffer 'some text', 'ascii'
; stream = new DecodeStream buf
; stream.readString(buf.length).should.equal 'some text'
7 years ago
(let ()
(define buf (+Buffer "some text" 'ascii))
(define stream (+DecodeStream buf))
(check-equal? (send stream readString (*length buf)) "some text"))
;
; it 'should decode ascii', ->
; buf = new Buffer 'some text', 'ascii'
; stream = new DecodeStream buf
; stream.readString(buf.length, 'ascii').should.equal 'some text'
7 years ago
(let ()
(define buf (+Buffer "some text" 'ascii))
(define stream (+DecodeStream buf))
(check-equal? (send stream readString (*length buf) 'ascii) "some text"))
;
; it 'should decode utf8', ->
; buf = new Buffer 'unicode! 👍', 'utf8'
; stream = new DecodeStream buf
; stream.readString(buf.length, 'utf8').should.equal 'unicode! 👍'
7 years ago
(let ()
(define buf (+Buffer "unicode! 👍" 'utf8))
(define stream (+DecodeStream buf))
(check-equal? (send stream readString (*length buf) 'utf8) "unicode! 👍"))
#|
; todo: support freaky string encodings
; it 'should decode utf16le', ->
; buf = new Buffer 'unicode! 👍', 'utf16le'
; stream = new DecodeStream buf
; stream.readString(buf.length, 'utf16le').should.equal 'unicode! 👍'
;
; it 'should decode ucs2', ->
; buf = new Buffer 'unicode! 👍', 'ucs2'
; stream = new DecodeStream buf
; stream.readString(buf.length, 'ucs2').should.equal 'unicode! 👍'
;
; it 'should decode utf16be', ->
; buf = new Buffer 'unicode! 👍', 'utf16le'
; for i in [0...buf.length - 1] by 2
; byte = buf[i]
; buf[i] = buf[i + 1]
; buf[i + 1] = byte
;
; stream = new DecodeStream buf
; stream.readString(buf.length, 'utf16be').should.equal 'unicode! 👍'
;
; it 'should decode macroman', ->
; buf = new Buffer [0x8a, 0x63, 0x63, 0x65, 0x6e, 0x74, 0x65, 0x64, 0x20, 0x63, 0x68, 0x87, 0x72, 0x61, 0x63, 0x74, 0x65, 0x72, 0x73]
; stream = new DecodeStream buf
; stream.readString(buf.length, 'mac').should.equal 'äccented cháracters'
7 years ago
|#
; it 'should return a buffer for unsupported encodings', ->
; stream = new DecodeStream new Buffer [1, 2, 3]
7 years ago
; stream.readString(3, 'unsupported').should.deep.equal new Buffer [1, 2, 3]
(let ()
(define buf (+Buffer '(1 2 3)))
(define stream (+DecodeStream buf))
(check-equal? (send stream readString 3 'unsupported) (+Buffer '(1 2 3))))