guile/test-suite/tests/ftw.test

;;;; ftw.test --- exercise ice-9/ftw.scm      -*- scheme -*-
;;;;
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(define-module (test-suite test-ice-9-ftw)
  #:use-module (test-suite lib)
  #:use-module (ice-9 ftw))


;; the procedure-source checks here ensure the vector indexes we write match
;; what ice-9/posix.scm stat:dev and stat:ino do (which in turn match
;; libguile/filesys.c of course)

(or (equal? (procedure-source stat:dev)
	    '(lambda (f) (vector-ref f 0)))
    (error "oops, unexpected stat:dev definition"))
(define (stat:dev! st dev)
  (vector-set! st 0 dev))

(or (equal? (procedure-source stat:ino)
	    '(lambda (f) (vector-ref f 1)))
    (error "oops, unexpected stat:ino definition"))
(define (stat:ino! st ino)
  (vector-set! st 1 ino))


;; similar to what's now in guile 1.8, but only working to fetch, not with set!
(define-macro (@@ mod-name var-name)
  (let ((var (module-variable (resolve-module mod-name) var-name)))
    (if (not var)
	(error "no such variable" (list '@@ mod-name var-name)))
    (list variable-ref var)))


;;
;; visited?-proc
;;

(with-test-prefix "visited?-proc"

  ;; normally internal-only
  (let* ((visited?-proc (@@ (ice-9 ftw) visited?-proc))
	 (visited? (visited?-proc 97))
	 (s (stat "/")))

    (define (try-visited? dev ino)
      (stat:dev! s dev)
      (stat:ino! s ino)
      (visited? s))

    (pass-if "0 0 - 1st" (eq? #f (try-visited? 0 0)))
    (pass-if "0 0 - 2nd" (eq? #t (try-visited? 0 0)))
    (pass-if "0 0 - 3rd" (eq? #t (try-visited? 0 0)))

    (pass-if "0 1" (eq? #f (try-visited? 0 1)))
    (pass-if "0 2" (eq? #f (try-visited? 0 2)))
    (pass-if "0 3" (eq? #f (try-visited? 0 3)))

    (pass-if "5 5" (eq? #f (try-visited? 5 5)))
    (pass-if "5 7" (eq? #f (try-visited? 5 7)))
    (pass-if "7 5" (eq? #f (try-visited? 7 5)))
    (pass-if "7 7" (eq? #f (try-visited? 7 7)))

    (pass-if "5 5 - 2nd" (eq? #t (try-visited? 5 5)))
    (pass-if "5 7 - 2nd" (eq? #t (try-visited? 5 7)))
    (pass-if "7 5 - 2nd" (eq? #t (try-visited? 7 5)))
    (pass-if "7 7 - 2nd" (eq? #t (try-visited? 7 7)))))