#lang racket

(require "../rsound.rkt"
         "../util.rkt"
         "../write-wav.rkt"
         "../read-wav.rkt"
         rackunit
         rackunit/text-ui)

(run-tests
(test-suite 
 "write-wav"
(let ()
(define sound-len 32114)
(define test-samplerate 30022)
(define r (parameterize ([default-sample-rate test-samplerate])
            (noise sound-len)))

(let ()
  (define temp-filename (make-temporary-file))
(write-sound/s16vector (rsound-data r) (rsound-start r) 
                       (rsound-stop r) (rsound-sample-rate r) (path->string temp-filename))

(check-equal? (rs-read-frames temp-filename) sound-len)
(check-equal? (rs-read-sample-rate temp-filename) test-samplerate)

(define s 
  (apply rsound/all 
         (read-sound/s16vector (path->string temp-filename) 0 #f)))

(check-true
 (for/and ([i (in-range sound-len)])
   (and (= (rs-ith/left/s16 r i) (rs-ith/left/s16 s i))
        (= (rs-ith/right/s16 r i) (rs-ith/right/s16 s i))))))
  
(let ()
  (define start 10001)
  (define stop  19934)
  (define temp-filename (make-temporary-file))
  (write-sound/s16vector (rsound-data r)  start stop
                         (rsound-sample-rate r)
                         (path->string temp-filename))

(check-equal? (rs-read-frames temp-filename) (- stop start))
(check-equal? (rs-read-sample-rate temp-filename) test-samplerate)

(define s 
  (apply rsound/all 
         (read-sound/s16vector (path->string temp-filename) 0 #f)))

(check-true
 (for/and ([i (in-range (- stop start))])
   (and (= (rs-ith/left/s16 r (+ start i)) (rs-ith/left/s16 s i))
        (= (rs-ith/right/s16 r (+ start i)) (rs-ith/right/s16 s i))))))
  
  ;; test case for partial write:
  
  
  
  
  
  )))