You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
182 lines
7.9 KiB
Racket
182 lines
7.9 KiB
Racket
#lang racket/base
|
|
(require rackunit
|
|
racket/dict
|
|
racket/class
|
|
"../base.rkt"
|
|
"../pointer.rkt"
|
|
"../number.rkt"
|
|
"../dict.rkt"
|
|
"../base.rkt"
|
|
racket/promise
|
|
sugar/unstable/dict)
|
|
|
|
#|
|
|
approximates
|
|
https://github.com/mbutterick/restructure/blob/master/test/Pointer.coffee
|
|
|#
|
|
|
|
(test-case
|
|
"pointer: decode should handle null pointers"
|
|
(parameterize ([current-input-port (open-input-bytes (bytes 0))])
|
|
(check-false (decode (x:pointer) #:parent (mhash x:start-offset-key 50)))))
|
|
|
|
(test-case
|
|
"pointer: decode should use local offsets from start of parent by default"
|
|
(parameterize ([current-input-port (open-input-bytes (bytes 1 53))])
|
|
(check-equal? (decode (x:pointer) #:parent (mhash x:start-offset-key 0)) 53)))
|
|
|
|
(test-case
|
|
"pointer: decode should support immediate offsets"
|
|
(parameterize ([current-input-port (open-input-bytes (bytes 1 53))])
|
|
(check-equal? (decode (x:pointer #:relative-to 'immediate)) 53)))
|
|
|
|
(test-case
|
|
"pointer: decode should support offsets relative to the parent"
|
|
(parameterize ([current-input-port (open-input-bytes (bytes 0 0 1 53))])
|
|
(pos (current-input-port) 2)
|
|
(check-equal? (decode (x:pointer #:relative-to 'parent) #:parent (mhash x:parent-key (mhash x:start-offset-key 2))) 53)))
|
|
|
|
(test-case
|
|
"pointer: decode should support global offsets"
|
|
(parameterize ([current-input-port (open-input-bytes (bytes 1 2 4 0 0 0 53))])
|
|
(pos (current-input-port) 2)
|
|
(check-equal? (decode (x:pointer #:relative-to 'global) #:parent (mhash x:parent-key (mhash x:parent-key (mhash x:start-offset-key 2))))
|
|
53)))
|
|
|
|
;; skipping
|
|
;; 'should support offsets relative to a property on the parent'
|
|
|
|
(test-case
|
|
"pointer: decode should support returning pointer if there is no decode type"
|
|
(parameterize ([current-input-port (open-input-bytes (bytes 4))])
|
|
(check-equal? (decode (x:pointer uint8 'void) #:parent (mhash x:start-offset-key 0)) 4)))
|
|
|
|
(test-case
|
|
"pointer: decode should support decoding pointers lazily"
|
|
(parameterize ([current-input-port (open-input-bytes (bytes 1 53))])
|
|
(define res (decode (x:dict 'ptr (x:pointer #:lazy #t))))
|
|
(check-true (promise? (hash-ref res 'ptr)))
|
|
(check-equal? (force (hash-ref res 'ptr)) 53)))
|
|
|
|
(test-case
|
|
"pointer: size"
|
|
(let ([parent (mhash x:pointer-size-key 0)])
|
|
(check-equal? (size (x:pointer) 10 #:parent parent) 1)
|
|
(check-equal? (hash-ref parent x:pointer-size-key) 1)))
|
|
|
|
(test-case
|
|
"pointer: size should add to immediate pointerSize"
|
|
(let ([parent (mhash x:pointer-size-key 0)])
|
|
(check-equal? (size (x:pointer #:relative-to 'immediate) 10 #:parent parent) 1)
|
|
(check-equal? (hash-ref parent x:pointer-size-key) 1)))
|
|
|
|
(test-case
|
|
"pointer: size should add to parent pointerSize"
|
|
(let ([parent (mhash x:parent-key (mhash x:pointer-size-key 0))])
|
|
(check-equal? (size (x:pointer #:relative-to 'parent) 10 #:parent parent) 1)
|
|
(check-equal? (hash-ref* parent x:parent-key x:pointer-size-key) 1)))
|
|
|
|
(test-case
|
|
"pointer: size should add to global pointerSize"
|
|
(let ([parent (mhash x:parent-key (mhash x:parent-key (mhash x:parent-key (mhash x:pointer-size-key 0))))])
|
|
(check-equal? (size (x:pointer #:relative-to 'global) 10 #:parent parent) 1)
|
|
(check-equal? (hash-ref* parent x:parent-key x:parent-key x:parent-key x:pointer-size-key) 1)))
|
|
|
|
(test-case
|
|
"pointer: size should handle void pointers"
|
|
(let ([parent (mhash x:pointer-size-key 0)])
|
|
(check-equal? (size (x:pointer uint8 'void) (x:void-pointer uint8 50) #:parent parent) 1)
|
|
(check-equal? (hash-ref parent x:pointer-size-key) 1)))
|
|
|
|
(test-case
|
|
"pointer: size should throw if no type and not a void pointer"
|
|
(let ([parent (mhash x:pointer-size-key 0)])
|
|
(check-exn exn:fail:contract? (λ () (size (x:pointer uint8 'void) 30 #:parent parent)))))
|
|
|
|
(test-case
|
|
"pointer: size should return a fixed size without a value"
|
|
(check-equal? (size (x:pointer)) 1))
|
|
|
|
(test-case
|
|
"pointer: encode should handle null pointers"
|
|
(parameterize ([current-output-port (open-output-bytes)])
|
|
(define parent (mhash x:pointer-size-key 0
|
|
x:start-offset-key 0
|
|
x:pointer-offset-key 0
|
|
x:pointers-key null))
|
|
(encode (x:pointer) #f #:parent parent)
|
|
(check-equal? (hash-ref parent x:pointer-size-key) 0)
|
|
(check-equal? (get-output-bytes (current-output-port)) (bytes 0))))
|
|
|
|
(test-case
|
|
"pointer: encode should handle local offsets"
|
|
(parameterize ([current-output-port (open-output-bytes)])
|
|
(define parent (mhash x:pointer-size-key 0
|
|
x:start-offset-key 0
|
|
x:pointer-offset-key 1
|
|
x:pointers-key null))
|
|
(encode (x:pointer) 10 #:parent parent)
|
|
(check-equal? (hash-ref parent x:pointer-offset-key) 2)
|
|
(check-equal? (hash-ref parent x:pointers-key) (list (x:ptr uint8 10 parent)))
|
|
(check-equal? (get-output-bytes (current-output-port)) (bytes 1))))
|
|
|
|
(test-case
|
|
"pointer: encode should handle immediate offsets"
|
|
(parameterize ([current-output-port (open-output-bytes)])
|
|
(define parent (mhash x:pointer-size-key 0
|
|
x:start-offset-key 0
|
|
x:pointer-offset-key 1
|
|
x:pointers-key null))
|
|
(encode (x:pointer #:relative-to 'immediate) 10 #:parent parent)
|
|
(check-equal? (hash-ref parent x:pointer-offset-key) 2)
|
|
(check-equal? (hash-ref parent x:pointers-key) (list (x:ptr uint8 10 parent)))
|
|
(check-equal? (get-output-bytes (current-output-port)) (bytes 0))))
|
|
|
|
(test-case
|
|
"pointer: encode should handle offsets relative to parent"
|
|
(parameterize ([current-output-port (open-output-bytes)])
|
|
(define parent (mhash x:parent-key (mhash x:pointer-size-key 0
|
|
x:start-offset-key 3
|
|
x:pointer-offset-key 5
|
|
x:pointers-key null)))
|
|
(encode (x:pointer #:relative-to 'parent) 10 #:parent parent)
|
|
(check-equal? (hash-ref* parent x:parent-key x:pointer-offset-key) 6)
|
|
(check-equal? (hash-ref* parent x:parent-key x:pointers-key) (list (x:ptr uint8 10 parent)))
|
|
(check-equal? (get-output-bytes (current-output-port)) (bytes 2))))
|
|
|
|
(test-case
|
|
"pointer: encode should handle global offsets"
|
|
(parameterize ([current-output-port (open-output-bytes)])
|
|
(define parent (mhash x:parent-key
|
|
(mhash x:parent-key
|
|
(mhash x:parent-key (mhash x:pointer-size-key 0
|
|
x:start-offset-key 3
|
|
x:pointer-offset-key 5
|
|
x:pointers-key null)))))
|
|
(encode (x:pointer #:relative-to 'global) 10 #:parent parent)
|
|
(check-equal? (hash-ref* parent x:parent-key x:parent-key x:parent-key x:pointer-offset-key) 6)
|
|
(check-equal? (hash-ref* parent x:parent-key x:parent-key x:parent-key x:pointers-key)
|
|
(list (x:ptr uint8 10 parent)))
|
|
(check-equal? (get-output-bytes (current-output-port)) (bytes 5))))
|
|
|
|
(test-case
|
|
"pointer: encode should support void pointers"
|
|
(parameterize ([current-output-port (open-output-bytes)])
|
|
(define parent (mhash x:pointer-size-key 0
|
|
x:start-offset-key 0
|
|
x:pointer-offset-key 1
|
|
x:pointers-key null))
|
|
(encode (x:pointer uint8 'void) (x:void-pointer uint8 55) #:parent parent)
|
|
(check-equal? (hash-ref parent x:pointer-offset-key) 2)
|
|
(check-equal? (hash-ref parent x:pointers-key) (list (x:ptr uint8 55 parent)))
|
|
(check-equal? (get-output-bytes (current-output-port)) (bytes 1))))
|
|
|
|
(test-case
|
|
"pointer: encode should throw if not a void pointer instance"
|
|
(parameterize ([current-output-port (open-output-bytes)])
|
|
(define parent (mhash x:pointer-size-key 0
|
|
x:start-offset-key 0
|
|
x:pointer-offset-key 1
|
|
x:pointers-key null))
|
|
(check-exn exn:fail:contract? (λ () (encode (x:pointer uint8 'void) 44 #:parent parent)))))
|