(in-package :ddr-tests)


#|
Copyright (c) 2007 Christopher K. Riesbeck

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|#

;;; Test cases for the exercises in ddr-exs.html

;;; UPDATES
;;; 10/15/10 Changed tests to load rule sets automatically [CKR]
;;; 10/13/10 Added test to MEMBER [CKR]
;;; 09/21/09 Moved Shakey tests to separate file and package [CKR]
;;; 02/09/08 Added a test to MEMBER [CKR]
;;; 02/07/08 Added another test to ALL-DIFFERENT (from Jeremy Meisel) [CKR]
;;; 02/02/08 Added tests to MEMBER [CKR]

;;; MEMBER

(declaim (special *member-kb*))

(define-test member
   (init-kb *member-kb*)
  
  (assert-false (ask '(member a nil)))
  (assert-true (ask '(member a (cons a nil))))
  (assert-false (ask '(member nil (cons a nil))))
  (assert-true (ask '(member b (cons a (cons b (cons c nil))))))
  (assert-true (ask '(member c (cons a (cons b (cons c nil))))))
  (assert-false (ask '(member d (cons a (cons b (cons c nil))))))
  (assert-false (ask '(member nil nil)))
  (assert-false (ask '(member a a)))
  (assert-false (ask '(member a (cons (cons a nil) (cons b nil)))))
  )


;;; ALL-DIFFERENT

(declaim (special *all-different-kb*))

(define-test all-different
  (init-kb *all-different-kb*)
  
  (assert-false (ask '(different a b)))
  (tell '(all-different nil))
  (assert-false (ask '(different a b)))
  (tell '(all-different (cons a (cons b (cons c nil)))))
  (assert-true (ask '(different a b)))
  (assert-true (ask '(different a c)))
  (assert-true (ask '(different b a)))
  (assert-true (ask '(different b c)))
  (assert-true (ask '(different c a)))
  (assert-true (ask '(different c b)))
  (assert-false (ask '(different a a)))
  (assert-false (ask '(different a d)))
  )

;;; MAP COLORING

(declaim (special *map-color-kb*))

(define-test color-map1
  (init-kb *map-color-kb*)

  (assert-equal '((colors-for map1 red blue green yellow))
                (ask '(colors-for map1 red blue green ?d)))
  (assert-equal 2 (length (ask '(colors-for map1 red blue ?c ?d))))
  (assert-equal 24 (length (ask '(colors-for map1 ?a ?b ?c ?d))))
  (assert-equal nil (ask '(colors-for map1 red blue green red)))
  )

(define-test color-map2
  (init-kb *map-color-kb*)

  (assert-equal '((colors-for map2 red blue green blue yellow))
                (ask '(colors-for map2 red blue green ?d ?e)))
  (assert-equal 2 (length (ask '(colors-for map2 red blue ?c ?d ?e))))
  (assert-equal 24 (length (ask '(colors-for map2 ?a ?b ?c ?d ?e))))
  (assert-equal nil (ask '(colors-for map2 red blue green yellow ?e)))
  )

(define-test color-map3
  (init-kb *map-color-kb*)

  (assert-equal '((colors-for map3 red blue green yellow green blue))
                (ask '(colors-for map3 red blue green yellow ?e ?f)))
  (assert-equal 1 (length (ask '(colors-for map3 red blue green ?d ?e ?f))))
  (assert-equal 24 (length (ask '(colors-for map3 ?a ?b ?c ?d ?e ?f))))
  (assert-equal nil (ask '(colors-for map3 red blue green blue ?e ?f)))
  )