tests.lisp

;;; tests.lisp --- test procedure.

;; Copyright (C) 2014 Ralph Schleicher

;; Redistribution and use in source and binary forms, with or without
;; modification, are permitted provided that the following conditions
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;;
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;; "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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;; POSSIBILITY OF SUCH DAMAGE.

;;; Code:

(in-package :common-lisp-user)

(defpackage :rs-colors-tests
  (:use :common-lisp
	:iterate
	:lisp-unit
	:rs-colors))

(in-package :rs-colors-tests)

(define-test srgb-regression-test
  (assert-false
   (iter (for value :from 0 :to (1- (expt 2 24)))
	 (for color = (make-srgb-color-from-number value))
	 (multiple-value-bind (ro go bo)
	     (color-coordinates color)
	   (change-class color 'ciexyz-color)
	   (change-class color 'srgb-color)
	   (multiple-value-bind (r g b)
	       (color-coordinates color)
	     (let ((eps #.(/ (expt 2 31))))
	       (unless (and (< (abs (- r ro)) eps)
			    (< (abs (- g go)) eps)
			    (< (abs (- b bo)) eps))
		 (collect value))))))))

(define-test adobe-rgb-regression-test
  (assert-false
   (iter (for value :from 0 :to (1- (expt 2 24)))
	 (for color = (make-adobe-rgb-color-from-number value))
	 (multiple-value-bind (ro go bo)
	     (color-coordinates color)
	   (change-class color 'ciexyz-color)
	   (change-class color 'adobe-rgb-color)
	   (multiple-value-bind (r g b)
	       (color-coordinates color)
	     (let ((eps #.(/ (expt 2 15))))
	       (unless (and (< (abs (- r ro)) eps)
			    (< (abs (- g go)) eps)
			    (< (abs (- b bo)) eps))
		 (collect value))))))))

(run-tests)

;;; tests.lisp ends here