number tests pass

main
Matthew Butterick 6 years ago
parent e4aa5d254c
commit 0eba993f8d

@ -0,0 +1,15 @@
#lang racket/base
(provide (all-defined-out))
#|
approximates
https://github.com/mbutterick/restructure/blob/master/src/Array.coffee
|#
(test-module
(check-equal? (decode (+Array uint16be 3) #"ABCDEF") '(16706 17220 17734))
(check-equal? (encode (+Array uint16be 3) '(16706 17220 17734) #f) #"ABCDEF")
(check-equal? (size (+Array uint16be) '(1 2 3)) 6)
(check-equal? (size (+Array doublebe) '(1 2 3 4 5)) 40))

@ -1,5 +1,7 @@
#lang racket/base
(require racket/generic)
(require racket/generic
racket/dict
racket/port)
(provide (all-defined-out))
(define (->input-port arg)
@ -17,6 +19,18 @@
(define (signed->unsigned sint bits)
(bitwise-and sint (arithmetic-shift 1 bits)))
(define (dump x)
(define (dump-dict x)
(for/list ([(k v) (in-dict x)])
(cons (dump k) (dump v))))
(let loop ([x x])
(cond
[(input-port? x) (port->bytes x)]
[(output-port? x) (get-output-bytes x)]
[(dict? x) (dump-dict x)]
[(list? x) (map loop x)]
[else x])))
(define-generics xenomorphic
(encode xenomorphic val [port])
(decode xenomorphic [port])

@ -2,6 +2,12 @@
(require "base.rkt")
(provide (all-defined-out))
#|
approximates
https://github.com/mbutterick/restructure/blob/master/src/Number.coffee
|#
(define (exact-if-possible x) (if (integer? x) (inexact->exact x) x))
(define system-endian (if (system-big-endian?) 'be 'le))

@ -0,0 +1,330 @@
#lang racket/base
(require rackunit "../number.rkt" "../base.rkt")
;describe 'Number', ->
; describe 'uint8', ->
; it 'should decode', ->
; it 'should have a size', ->
; it 'should encode', (done) ->
(parameterize ([current-input-port (open-input-bytes (bytes #xab #xff))])
(check-equal? (decode uint8) #xab)
(check-equal? (decode uint8) #xff))
(check-equal? (size uint8) 1)
(let ([port (open-output-bytes)])
(encode uint8 #xab port)
(encode uint8 #xff port)
(check-equal? (dump port) (bytes #xab #xff)))
; describe 'uint16', ->
; it 'is an alias for uint16be', ->
; modified test: `uint16` is the same endianness as the platform
(check-equal? (decode uint16 (bytes 0 1)) (decode (if (system-big-endian?)
uint16be
uint16le) (bytes 0 1)))
; describe 'uint16be', ->
; it 'should decode', ->
; it 'should have a size', ->
; it 'should encode', (done) ->
(check-equal? (decode uint16be (open-input-bytes (bytes #xab #xff))) #xabff)
(check-equal? (size uint16be) 2)
(check-equal? (encode uint16be #xabff #f) (bytes #xab #xff))
;
; describe 'uint16le', ->
; it 'should decode', ->
; it 'should have a size', ->
; it 'should encode', (done) ->
(check-equal? (decode uint16le (open-input-bytes (bytes #xff #xab))) #xabff)
(check-equal? (size uint16le) 2)
(check-equal? (encode uint16le #xabff #f) (bytes #xff #xab))
;
; describe 'uint24', ->
; it 'is an alias for uint24be', ->
;; modified test: `uint24` is the same endianness as the platform
(check-equal? (decode uint24 (bytes 0 1 2)) (decode (if (system-big-endian?)
uint24be
uint24le) (bytes 0 1 2)))
;
; describe 'uint24be', ->
; it 'should decode', ->
; it 'should have a size', ->
; it 'should encode', (done) ->
(check-equal? (decode uint24be (open-input-bytes (bytes #xff #xab #x24))) #xffab24)
(check-equal? (size uint24be) 3)
(check-equal? (encode uint24be #xffab24 #f) (bytes #xff #xab #x24))
;
; describe 'uint24le', ->
; it 'should decode', ->
; it 'should have a size', ->
; it 'should encode', (done) ->
(check-equal? (decode uint24le (open-input-bytes (bytes #x24 #xab #xff))) #xffab24)
(check-equal? (size uint24le) 3)
(check-equal? (encode uint24le #xffab24 #f) (bytes #x24 #xab #xff))
;
; describe 'uint32', ->
; it 'is an alias for uint32be', ->
;; modified test: `uint32` is the same endianness as the platform
(check-equal? (decode uint32 (bytes 0 1 2 3)) (decode (if (system-big-endian?)
uint32be
uint32le) (bytes 0 1 2 3)))
;
; describe 'uint32be', ->
; it 'should decode', ->
; it 'should have a size', ->
; it 'should encode', (done) ->
(check-equal? (decode uint32be (open-input-bytes (bytes #xff #xab #x24 #xbf))) #xffab24bf)
(check-equal? (size uint32be) 4)
(check-equal? (encode uint32be #xffab24bf #f) (bytes #xff #xab #x24 #xbf))
;
; describe 'uint32le', ->
; it 'should decode', ->
; it 'should encode', (done) ->
(check-equal? (decode uint32le (open-input-bytes (bytes #xbf #x24 #xab #xff))) #xffab24bf)
(check-equal? (size uint32le) 4)
(check-equal? (encode uint32le #xffab24bf #f) (bytes #xbf #x24 #xab #xff))
;
; describe 'int8', ->
; it 'should decode', ->
; it 'should have a size', ->
; it 'should encode', (done) ->
(let ([port (open-input-bytes (bytes #x7f #xff))])
(check-equal? (decode int8 port) 127)
(check-equal? (decode int8 port) -1))
(check-equal? (size int8) 1)
(let ([port (open-output-bytes)])
(encode int8 127 port)
(encode int8 -1 port)
(check-equal? (dump port) (bytes #x7f #xff)))
;
; describe 'int16', ->
; it 'is an alias for int16be', ->
; int16.should.equal int16be
;; modified test: `int16` is the same endianness as the platform
(check-equal? (decode int16 (bytes 0 1)) (decode (if (system-big-endian?)
int16be
int16le) (bytes 0 1)))
;
; describe 'int16be', ->
; it 'should decode', ->
; it 'should have a size', ->
; it 'should encode', (done) ->
(let ([port (open-input-bytes (bytes #xff #xab))])
(check-equal? (decode int16be port) -85))
(check-equal? (size int16be) 2)
(let ([port (open-output-bytes)])
(encode int16be -85 port)
(check-equal? (dump port) (bytes #xff #xab)))
; describe 'int16le', ->
; it 'should decode', ->
; it 'should have a size', ->
; it 'should encode', (done) ->
(check-equal? (decode int16le (open-input-bytes (bytes #xab #xff))) -85)
(check-equal? (size int16le) 2)
(check-equal? (encode int16le -85 #f) (bytes #xab #xff))
;
; describe 'int24', ->
; it 'is an alias for int24be', ->
; int24.should.equal int24be
;; modified test: `int24` is the same endianness as the platform
(check-equal? (decode int24 (bytes 0 1 2)) (decode (if (system-big-endian?)
int24be
int24le) (bytes 0 1 2)))
;
; describe 'int24be', ->
; it 'should decode', ->
; it 'should have a size', ->
; it 'should encode', (done) ->
(check-equal? (decode int24be (open-input-bytes (bytes #xff #xab #x24))) -21724)
(check-equal? (size int24be) 3)
(check-equal? (encode int24be -21724 #f) (bytes #xff #xab #x24))
;
; describe 'int24le', ->
; it 'should decode', ->
; it 'should have a size', ->
; it 'should encode', (done) ->
(check-equal? (decode int24le (open-input-bytes (bytes #x24 #xab #xff))) -21724)
(check-equal? (size int24le) 3)
(check-equal? (encode int24le -21724 #f) (bytes #x24 #xab #xff))
; describe 'int32', ->
; it 'is an alias for int32be', ->
; modified test: `int32` is the same endianness as the platform
(check-equal? (decode int32 (bytes 0 1 2 3)) (decode (if (system-big-endian?)
int32be
int32le) (bytes 0 1 2 3)))
;
; describe 'int32be', ->
; it 'should decode', ->
; it 'should have a size', ->
; it 'should encode', (done) ->
(check-equal? (decode int32be (open-input-bytes (bytes #xff #xab #x24 #xbf))) -5561153)
(check-equal? (size int32be) 4)
(check-equal? (encode int32be -5561153 #f) (bytes #xff #xab #x24 #xbf))
;
; describe 'int32le', ->
; it 'should decode', ->
; it 'should have a size', ->
; it 'should encode', (done) ->
(check-equal? (decode int32le (open-input-bytes (bytes #xbf #x24 #xab #xff))) -5561153)
(check-equal? (size int32le) 4)
(check-equal? (encode int32le -5561153 #f) (bytes #xbf #x24 #xab #xff))
;
; describe 'float', ->
; it 'is an alias for floatbe', ->
; modified test: `float` is the same endianness as the platform
(check-equal? (decode float (bytes 0 1 2 3)) (decode (if (system-big-endian?)
floatbe
floatle) (bytes 0 1 2 3)))
;
; describe 'floatbe', ->
; it 'should decode', ->
; it 'should have a size', ->
; it 'should encode', (done) ->
(check-= (decode floatbe (open-input-bytes (bytes #x43 #x7a #x8c #xcd))) 250.55 0.01)
(check-equal? (size floatbe) 4)
(check-equal? (encode floatbe 250.55 #f) (bytes #x43 #x7a #x8c #xcd))
;
; describe 'floatle', ->
; it 'should decode', ->
; it 'should have a size', ->
; it 'should encode', (done) ->
(check-= (decode floatle (open-input-bytes (bytes #xcd #x8c #x7a #x43))) 250.55 0.01)
(check-equal? (size floatle) 4)
(check-equal? (encode floatle 250.55 #f) (bytes #xcd #x8c #x7a #x43))
;
; describe 'double', ->
; it 'is an alias for doublebe', ->
; modified test: `double` is the same endianness as the platform
(check-equal? (decode double (bytes 0 1 2 3 4 5 6 7)) (decode (if (system-big-endian?)
doublebe
doublele) (bytes 0 1 2 3 4 5 6 7)))
;
; describe 'doublebe', ->
; it 'should decode', ->
; it 'should have a size', ->
; it 'should encode', (done) ->
(check-equal? (decode doublebe (open-input-bytes (bytes #x40 #x93 #x4a #x3d #x70 #xa3 #xd7 #x0a))) 1234.56)
(check-equal? (size doublebe) 8)
(check-equal? (encode doublebe 1234.56 #f) (bytes #x40 #x93 #x4a #x3d #x70 #xa3 #xd7 #x0a))
;
; describe 'doublele', ->
; it 'should decode', ->
; it 'should have a size', ->
; it 'should encode', (done) ->
(check-equal? (decode doublele (open-input-bytes (bytes #x0a #xd7 #xa3 #x70 #x3d #x4a #x93 #x40))) 1234.56)
(check-equal? (size doublele) 8)
(check-equal? (encode doublele 1234.56 #f) (bytes #x0a #xd7 #xa3 #x70 #x3d #x4a #x93 #x40))
;
; describe 'fixed16', ->
; it 'is an alias for fixed16be', ->
; modified test: `fixed16` is the same endianness as the platform
(check-equal? (decode fixed16 (bytes 0 1)) (decode (if (system-big-endian?)
fixed16be
fixed16le) (bytes 0 1)))
;
; describe 'fixed16be', ->
; it 'should decode', ->
; it 'should have a size', ->
; it 'should encode', (done) ->
(check-= (decode fixed16be (open-input-bytes (bytes #x19 #x57))) 25.34 0.01)
(check-equal? (size fixed16be) 2)
(check-equal? (encode fixed16be 25.34 #f) (bytes #x19 #x57))
;
; describe 'fixed16le', ->
; it 'should decode', ->
; it 'should have a size', ->
; it 'should encode', (done) ->
(check-= (decode fixed16le (open-input-bytes (bytes #x57 #x19))) 25.34 0.01)
(check-equal? (size fixed16le) 2)
(check-equal? (encode fixed16le 25.34 #f) (bytes #x57 #x19))
;
; describe 'fixed32', ->
; it 'is an alias for fixed32be', ->
; modified test: `fixed32` is the same endianness as the platform
(check-equal? (decode fixed32 (bytes 0 1 2 3)) (decode (if (system-big-endian?)
fixed32be
fixed32le) (bytes 0 1 2 3)))
;
; describe 'fixed32be', ->
; it 'should decode', ->
; it 'should have a size', ->
; it 'should encode', (done) ->
(check-= (decode fixed32be (open-input-bytes (bytes #x00 #xfa #x8c #xcc))) 250.55 0.01)
(check-equal? (size fixed32be) 4)
(check-equal? (encode fixed32be 250.55 #f) (bytes #x00 #xfa #x8c #xcc))
;
; describe 'fixed32le', ->
; it 'should decode', ->
; it 'should have a size', ->
; it 'should encode', (done) ->
(check-= (decode fixed32le (open-input-bytes (bytes #xcc #x8c #xfa #x00))) 250.55 0.01)
(check-equal? (size fixed32le) 4)
(check-equal? (encode fixed32le 250.55 #f) (bytes #xcc #x8c #xfa #x00))
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