;;  Filename : test-member.scm
;;  About    : unit tests for memq, memv, member
;;
;;  Copyright (C) 2006 YAMAMOTO Kengo <yamaken AT bp.iij4u.or.jp>
;;  Copyright (c) 2007-2008 SigScheme Project <uim-en AT googlegroups.com>
;;
;;  All rights reserved.
;;
;;  Redistribution and use in source and binary forms, with or without
;;  modification, are permitted provided that the following conditions
;;  are met:
;;
;;  1. Redistributions of source code must retain the above copyright
;;     notice, this list of conditions and the following disclaimer.
;;  2. Redistributions in binary form must reproduce the above copyright
;;     notice, this list of conditions and the following disclaimer in the
;;     documentation and/or other materials provided with the distribution.
;;  3. Neither the name of authors nor the names of its contributors
;;     may be used to endorse or promote products derived from this software
;;     without specific prior written permission.
;;
;;  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ``AS
;;  IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
;;  THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
;;  PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR
;;  CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
;;  EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
;;  PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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;;  NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
;;  SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

(require-extension (unittest))

(define tn test-name)

(define elm0 (lambda () 0))
(define elm1 (lambda () 1))
(define elm2 (lambda () 2))
(define elm3 (lambda () 3))
(define nil  '())
(define cdr3 (cons elm3 nil))
(define cdr2 (cons elm2 cdr3))
(define cdr1 (cons elm1 cdr2))
(define cdr0 (cons elm0 cdr1))
(define lst cdr0)

;; Remake char object to avoid constant optimization. If the implementation
;; does not have neither immediate char nor preallocated char objects, (eq? c
;; (char c)) will be false.
(define char
  (lambda (c)
    (integer->char (char->integer c))))

;;
;; memq
;;

(tn "memq")
(assert-false  (tn)       (memq 'a '()))
(assert-false  (tn)       (memq '() '()))
(assert-equal? (tn) '(()) (memq '() '(())))
(tn "memq builtin procedures")
(assert-equal? (tn) (list + - * /) (memq + (list + - * /)))
(assert-equal? (tn) (list - * /)   (memq - (list + - * /)))
(assert-equal? (tn) (list * /)     (memq * (list + - * /)))
(assert-equal? (tn) (list /)       (memq / (list + - * /)))
(assert-false  (tn)                (memq car (list + - * /)))
(tn "memq closures")
(assert-equal? (tn) cdr0 (memq elm0 lst))
(assert-equal? (tn) cdr1 (memq elm1 lst))
(assert-equal? (tn) cdr2 (memq elm2 lst))
(assert-equal? (tn) cdr3 (memq elm3 lst))
(assert-false  (tn)      (memq 'none lst))
(tn "memq strings with non-constant key")
;; These tests assume that (string #\a) is not optimized as constant string.
(assert-false  (tn) (memq (string #\a) '("a" "b" "c" "d")))
(assert-false  (tn) (memq (string #\b) '("a" "b" "c" "d")))
(assert-false  (tn) (memq (string #\c) '("a" "b" "c" "d")))
(assert-false  (tn) (memq (string #\d) '("a" "b" "c" "d")))
(assert-false  (tn) (memq (string #\e) '("a" "b" "c" "d")))
(tn "memq lists with non-constant key")
;; These tests assume that the keys are not optimized as constant object.
(assert-false  (tn) (memq (list (string #\a)) '(("a") ("b") ("c") ("d"))))
(assert-false  (tn) (memq (list (string #\b)) '(("a") ("b") ("c") ("d"))))
(assert-false  (tn) (memq (list (string #\c)) '(("a") ("b") ("c") ("d"))))
(assert-false  (tn) (memq (list (string #\d)) '(("a") ("b") ("c") ("d"))))
(assert-false  (tn) (memq (list (string #\e)) '(("a") ("b") ("c") ("d"))))
(assert-false  (tn)
               (memq (list (string #\a #\B #\c)
                           (list (string #\d) (list (string #\e))))
                     '(("aBc" ("d" ("E"))) ("aBc" ("d" ("e"))) "f" ("g"))))

(tn "memq improper lists: symbols")
(assert-equal? (tn) '(a b c . d) (memq 'a '(a b c . d)))
(assert-equal? (tn) '(b c . d)   (memq 'b '(a b c . d)))
(assert-equal? (tn) '(c . d)     (memq 'c '(a b c . d)))
(assert-error  (tn) (lambda ()   (memq 'd '(a b c . d))))
(assert-error  (tn) (lambda ()   (memq 'e '(a b c . d))))
(assert-error  (tn) (lambda ()   (memq 'a 'a)))
(assert-error  (tn) (lambda ()   (memq 'b 'a)))
(tn "memq improper lists: strings with non-constant key")
(assert-error  (tn) (lambda () (memq (string #\a) '("a" "b" "c" . "d"))))
(assert-error  (tn) (lambda () (memq (string #\b) '("a" "b" "c" . "d"))))
(assert-error  (tn) (lambda () (memq (string #\c) '("a" "b" "c" . "d"))))
(assert-error  (tn) (lambda () (memq (string #\d) '("a" "b" "c" . "d"))))
(assert-error  (tn) (lambda () (memq (string #\e) '("a" "b" "c" . "d"))))
(tn "memq improper lists: lists with non-constant key")
(assert-error  (tn) (lambda () (memq (list (string #\a))
                                     '(("a") ("b") ("c") . "d"))))
(assert-error  (tn) (lambda () (memq (list (string #\b))
                                     '(("a") ("b") ("c") . "d"))))
(assert-error  (tn) (lambda () (memq (list (string #\c))
                                     '(("a") ("b") ("c") . "d"))))
(assert-error  (tn) (lambda () (memq (list (string #\d))
                                     '(("a") ("b") ("c") . "d"))))
(assert-error  (tn) (lambda () (memq (list (string #\e))
                                     '(("a") ("b") ("c") . "d"))))

(tn "memq from R5RS examples")
(assert-equal? (tn) '(a b c) (memq 'a '(a b c)))
(assert-equal? (tn) '(b c)   (memq 'b '(a b c)))
(assert-false  (tn)          (memq 'a '(b c d)))
(assert-false  (tn)          (memq (list 'a) '(b (a) c)))

;;
;; memv
;;

(tn "memv")
(assert-false  (tn)       (memv 'a '()))
(assert-false  (tn)       (memv '() '()))
(assert-equal? (tn) '(()) (memv '() '(())))
(tn "memv symbols")
(assert-equal? (tn) '(a b c) (memv 'a '(a b c)))
(assert-equal? (tn) '(b c)   (memv 'b '(a b c)))
(assert-false  (tn)          (memv 'a '(b c d)))
(tn "memv builtin procedures")
(assert-equal? (tn) (list + - * /) (memv + (list + - * /)))
(assert-equal? (tn) (list - * /)   (memv - (list + - * /)))
(assert-equal? (tn) (list * /)     (memv * (list + - * /)))
(assert-equal? (tn) (list /)       (memv / (list + - * /)))
(assert-false  (tn)                (memv car (list + - * /)))
(tn "memv closures")
(assert-equal? (tn) cdr0 (memv elm0 lst))
(assert-equal? (tn) cdr1 (memv elm1 lst))
(assert-equal? (tn) cdr2 (memv elm2 lst))
(assert-equal? (tn) cdr3 (memv elm3 lst))
(assert-false  (tn)      (memv 'none lst))
(tn "memv numbers")
(assert-equal? (tn) '(0 1 2 3) (memv 0 '(0 1 2 3)))
(assert-equal? (tn) '(1 2 3)   (memv 1 '(0 1 2 3)))
(assert-equal? (tn) '(2 3)     (memv 2 '(0 1 2 3)))
(assert-equal? (tn) '(3)       (memv 3 '(0 1 2 3)))
(assert-false  (tn)            (memv 4 '(0 1 2 3)))
(tn "memv chars")
(assert-equal? (tn) '(#\a #\b #\c #\d) (memv #\a '(#\a #\b #\c #\d)))
(assert-equal? (tn) '(#\b #\c #\d)     (memv #\b '(#\a #\b #\c #\d)))
(assert-equal? (tn) '(#\c #\d)         (memv #\c '(#\a #\b #\c #\d)))
(assert-equal? (tn) '(#\d)             (memv #\d '(#\a #\b #\c #\d)))
(assert-false  (tn)                    (memv #\e '(#\a #\b #\c #\d)))
(tn "memv strings with non-constant key")
;; These tests assume that (string #\a) is not optimized as constant string.
(assert-false  (tn) (memv (string #\a) '("a" "b" "c" "d")))
(assert-false  (tn) (memv (string #\b) '("a" "b" "c" "d")))
(assert-false  (tn) (memv (string #\c) '("a" "b" "c" "d")))
(assert-false  (tn) (memv (string #\d) '("a" "b" "c" "d")))
(assert-false  (tn) (memv (string #\e) '("a" "b" "c" "d")))
(tn "memv lists")
(assert-false  (tn) (memv (list 'a) '(b (a) c)))
(tn "memv lists with non-constant key")
;; These tests assume that the keys are not optimized as constant object.
(assert-false  (tn) (memv (list (string #\a)) '(("a") ("b") ("c") ("d"))))
(assert-false  (tn) (memv (list (string #\b)) '(("a") ("b") ("c") ("d"))))
(assert-false  (tn) (memv (list (string #\c)) '(("a") ("b") ("c") ("d"))))
(assert-false  (tn) (memv (list (string #\d)) '(("a") ("b") ("c") ("d"))))
(assert-false  (tn) (memv (list (string #\e)) '(("a") ("b") ("c") ("d"))))
(assert-false  (tn)
               (memv (list (string #\a #\B #\c)
                           (list (string #\d) (list (string #\e))))
                     '(("aBc" ("d" ("E"))) ("aBc" ("d" ("e"))) "f" ("g"))))

(tn "memv improper lists: symbols")
(assert-equal? (tn) '(a b c . d) (memv 'a '(a b c . d)))
(assert-equal? (tn) '(b c . d)   (memv 'b '(a b c . d)))
(assert-equal? (tn) '(c . d)     (memv 'c '(a b c . d)))
(assert-error  (tn) (lambda ()   (memv 'd '(a b c . d))))
(assert-error  (tn) (lambda ()   (memv 'e '(a b c . d))))
(assert-error  (tn) (lambda ()   (memv 'a 'a)))
(assert-error  (tn) (lambda ()   (memv 'b 'a)))
(tn "memv improper lists: chars")
(assert-equal? (tn) '(#\a #\b #\c . #\d) (memv #\a '(#\a #\b #\c . #\d)))
(assert-equal? (tn) '(#\b #\c . #\d)     (memv #\b '(#\a #\b #\c . #\d)))
(assert-equal? (tn) '(#\c . #\d)         (memv #\c '(#\a #\b #\c . #\d)))
(assert-error  (tn) (lambda ()           (memv #\d '(#\a #\b #\c . #\d))))
(assert-error  (tn) (lambda ()           (memv #\e '(#\a #\b #\c . #\d))))
(tn "memv improper lists: strings with non-constant key")
(assert-error  (tn) (lambda () (memv (string #\a) '("a" "b" "c" . "d"))))
(assert-error  (tn) (lambda () (memv (string #\b) '("a" "b" "c" . "d"))))
(assert-error  (tn) (lambda () (memv (string #\c) '("a" "b" "c" . "d"))))
(assert-error  (tn) (lambda () (memv (string #\d) '("a" "b" "c" . "d"))))
(assert-error  (tn) (lambda () (memv (string #\e) '("a" "b" "c" . "d"))))
(tn "memv improper lists: lists with non-constant key")
(assert-error  (tn) (lambda () (memv (list (string #\a))
                                     '(("a") ("b") ("c") . "d"))))
(assert-error  (tn) (lambda () (memv (list (string #\b))
                                     '(("a") ("b") ("c") . "d"))))
(assert-error  (tn) (lambda () (memv (list (string #\c))
                                     '(("a") ("b") ("c") . "d"))))
(assert-error  (tn) (lambda () (memv (list (string #\d))
                                     '(("a") ("b") ("c") . "d"))))
(assert-error  (tn) (lambda () (memv (list (string #\e))
                                     '(("a") ("b") ("c") . "d"))))

;;
;; member
;;

(tn "member")
(assert-false  (tn)       (member 'a '()))
(assert-false  (tn)       (member '() '()))
(assert-equal? (tn) '(()) (member '() '(())))
(tn "member symbols")
(assert-equal? (tn) '(a b c) (member 'a '(a b c)))
(assert-equal? (tn) '(b c)   (member 'b '(a b c)))
(assert-false  (tn)          (member 'a '(b c d)))
(assert-equal? (tn) '((a) c) (member (list 'a) '(b (a) c)))  ;; R5RS
(tn "member builtin procedures")
(assert-equal? (tn) (list + - * /) (member + (list + - * /)))
(assert-equal? (tn) (list - * /)   (member - (list + - * /)))
(assert-equal? (tn) (list * /)     (member * (list + - * /)))
(assert-equal? (tn) (list /)       (member / (list + - * /)))
(assert-false  (tn)                (member car (list + - * /)))
(tn "member closures")
(assert-equal? (tn) cdr0 (member elm0 lst))
(assert-equal? (tn) cdr1 (member elm1 lst))
(assert-equal? (tn) cdr2 (member elm2 lst))
(assert-equal? (tn) cdr3 (member elm3 lst))
(assert-false  (tn)      (member 'none lst))
(tn "member numbers")
(assert-equal? (tn) '(0 1 2 3) (member 0 '(0 1 2 3)))
(assert-equal? (tn) '(1 2 3)   (member 1 '(0 1 2 3)))
(assert-equal? (tn) '(2 3)     (member 2 '(0 1 2 3)))
(assert-equal? (tn) '(3)       (member 3 '(0 1 2 3)))
(assert-false  (tn)            (member 4 '(0 1 2 3)))
(tn "member chars")
(assert-equal? (tn) '(#\a #\b #\c #\d) (member #\a '(#\a #\b #\c #\d)))
(assert-equal? (tn) '(#\b #\c #\d)     (member #\b '(#\a #\b #\c #\d)))
(assert-equal? (tn) '(#\c #\d)         (member #\c '(#\a #\b #\c #\d)))
(assert-equal? (tn) '(#\d)             (member #\d '(#\a #\b #\c #\d)))
(assert-false  (tn)                    (member #\e '(#\a #\b #\c #\d)))
(tn "member chars with non-constant key")
(assert-equal? (tn) '(#\a #\b #\c #\d) (member (char #\a) '(#\a #\b #\c #\d)))
(assert-equal? (tn) '(#\b #\c #\d)     (member (char #\b) '(#\a #\b #\c #\d)))
(assert-equal? (tn) '(#\c #\d)         (member (char #\c) '(#\a #\b #\c #\d)))
(assert-equal? (tn) '(#\d)             (member (char #\d) '(#\a #\b #\c #\d)))
(assert-false  (tn)                    (member (char #\e) '(#\a #\b #\c #\d)))
(tn "member strings")
(assert-equal? (tn) '("a" "b" "c" "d") (member "a" '("a" "b" "c" "d")))
(assert-equal? (tn) '("b" "c" "d")     (member "b" '("a" "b" "c" "d")))
(assert-equal? (tn) '("c" "d")         (member "c" '("a" "b" "c" "d")))
(assert-equal? (tn) '("d")             (member "d" '("a" "b" "c" "d")))
(assert-false  (tn)                    (member "e" '("a" "b" "c" "d")))
(tn "member strings with non-constant key")
;; These tests assume that (string #\a) is not optimized as constant string.
(assert-equal? (tn) '("a" "b" "c" "d") (member (string #\a) '("a" "b" "c" "d")))
(assert-equal? (tn) '("b" "c" "d")    (member (string #\b) '("a" "b" "c" "d")))
(assert-equal? (tn) '("c" "d")        (member (string #\c) '("a" "b" "c" "d")))
(assert-equal? (tn) '("d")            (member (string #\d) '("a" "b" "c" "d")))
(assert-false  (tn)                   (member (string #\e) '("a" "b" "c" "d")))
(tn "member lists")
(assert-equal? (tn)
               '(("a") ("b") ("c") ("d"))
               (member '("a") '(("a") ("b") ("c") ("d"))))
(assert-equal? (tn)
               '(("b") ("c") ("d"))
               (member '("b") '(("a") ("b") ("c") ("d"))))
(assert-equal? (tn)
               '(("c") ("d"))
               (member '("c") '(("a") ("b") ("c") ("d"))))
(assert-equal? (tn)
               '(("d"))
               (member '("d") '(("a") ("b") ("c") ("d"))))
(assert-false  (tn) (member '("e") '(("a") ("b") ("c") ("d"))))
(assert-equal? (tn)
               '(("aBc" ("d" ("e"))) "f" ("g"))
               (member '("aBc" ("d" ("e")))
                       '(("aBc" ("d" ("E"))) ("aBc" ("d" ("e"))) "f" ("g"))))
(tn "member lists with non-constant key")
;; These tests assume that the keys are not optimized as constant object.
(assert-equal? (tn)
               '(("a") ("b") ("c") ("d"))
               (member (list (string #\a)) '(("a") ("b") ("c") ("d"))))
(assert-equal? (tn)
               '(("b") ("c") ("d"))
               (member (list (string #\b)) '(("a") ("b") ("c") ("d"))))
(assert-equal? (tn)
               '(("c") ("d"))
               (member (list (string #\c)) '(("a") ("b") ("c") ("d"))))
(assert-equal? (tn)
               '(("d"))
               (member (list (string #\d)) '(("a") ("b") ("c") ("d"))))
(assert-false  (tn) (member (list (string #\e)) '(("a") ("b") ("c") ("d"))))
(assert-equal? (tn)
               '(("aBc" ("d" ("e"))) "f" ("g"))
               (member (list (string #\a #\B #\c)
                             (list (string #\d) (list (string #\e))))
                       '(("aBc" ("d" ("E"))) ("aBc" ("d" ("e"))) "f" ("g"))))

(tn "member improper lists: symbols")
(assert-equal? (tn) '(a b c . d) (member 'a '(a b c . d)))
(assert-equal? (tn) '(b c . d)   (member 'b '(a b c . d)))
(assert-equal? (tn) '(c . d)     (member 'c '(a b c . d)))
(assert-error  (tn) (lambda ()   (member 'd '(a b c . d))))
(assert-error  (tn) (lambda ()   (member 'e '(a b c . d))))
(assert-error  (tn) (lambda ()   (member 'a 'a)))
(assert-error  (tn) (lambda ()   (member 'b 'a)))
(tn "member improper lists: chars")
(assert-equal? (tn) '(#\a #\b #\c . #\d) (member #\a '(#\a #\b #\c . #\d)))
(assert-equal? (tn) '(#\b #\c . #\d)     (member #\b '(#\a #\b #\c . #\d)))
(assert-equal? (tn) '(#\c . #\d)         (member #\c '(#\a #\b #\c . #\d)))
(assert-error  (tn) (lambda ()           (member #\d '(#\a #\b #\c . #\d))))
(assert-error  (tn) (lambda ()           (member #\e '(#\a #\b #\c . #\d))))
(tn "member improper lists: chars with non-constant key")
(assert-equal? (tn) '(#\a #\b #\c . #\d) (member (char #\a)
                                                 '(#\a #\b #\c . #\d)))
(assert-equal? (tn) '(#\b #\c . #\d)     (member (char #\b)
                                                 '(#\a #\b #\c . #\d)))
(assert-equal? (tn) '(#\c . #\d)         (member (char #\c)
                                                 '(#\a #\b #\c . #\d)))
(assert-error  (tn) (lambda ()           (member (char #\d)
                                                 '(#\a #\b #\c . #\d))))
(assert-error  (tn) (lambda ()           (member (char #\e)
                                                 '(#\a #\b #\c . #\d))))
(tn "member improper lists: strings")
(assert-equal? (tn) '("a" "b" "c" . "d") (member "a" '("a" "b" "c" . "d")))
(assert-equal? (tn) '("b" "c" . "d")     (member "b" '("a" "b" "c" . "d")))
(assert-equal? (tn) '("c" . "d")         (member "c" '("a" "b" "c" . "d")))
(assert-error  (tn) (lambda ()           (member "d" '("a" "b" "c" . "d"))))
(assert-error  (tn) (lambda ()           (member "e" '("a" "b" "c" . "d"))))
(tn "member improper lists: strings with non-constant key")
(assert-equal? (tn) '("a" "b" "c" . "d") (member (string #\a)
                                                 '("a" "b" "c" . "d")))
(assert-equal? (tn) '("b" "c" . "d")     (member (string #\b)
                                                 '("a" "b" "c" . "d")))
(assert-equal? (tn) '("c" . "d")         (member (string #\c)
                                                 '("a" "b" "c" . "d")))
(assert-error  (tn) (lambda ()           (member (string #\d)
                                                 '("a" "b" "c" . "d"))))
(assert-error  (tn) (lambda ()           (member (string #\e)
                                                 '("a" "b" "c" . "d"))))
(tn "member improper lists: lists with non-constant key")
(assert-equal? (tn)
               '(("a") ("b") ("c") . "d")
               (member (list (string #\a)) '(("a") ("b") ("c") . "d")))
(assert-equal? (tn)
               '(("b") ("c") . "d")
               (member (list (string #\b)) '(("a") ("b") ("c") . "d")))
(assert-equal? (tn)
               '(("c") . "d")
               (member (list (string #\c)) '(("a") ("b") ("c") . "d")))
(assert-error  (tn) (lambda () (member (list (string #\d))
                                       '(("a") ("b") ("c") . "d"))))
(assert-error  (tn) (lambda () (member (list (string #\e))
                                       '(("a") ("b") ("c") . "d"))))


(total-report)