;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2012, 2015 Ludovic Courtès <ludo@gnu.org>
;;;
;;; This file is part of GNU Guix.
;;;
;;; GNU Guix is free software; you can redistribute it and/or modify it
;;; under the terms of the GNU General Public License as published by
;;; the Free Software Foundation; either version 3 of the License, or (at
;;; your option) any later version.
;;;
;;; GNU Guix is distributed in the hope that it will be useful, but
;;; WITHOUT ANY WARRANTY; without even the implied warranty of
;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
;;; GNU General Public License for more details.
;;;
;;; You should have received a copy of the GNU General Public License
;;; along with GNU Guix.  If not, see <http://www.gnu.org/licenses/>.


(define-module (test-build-utils)
  #:use-module (guix tests)
  #:use-module (guix store)
  #:use-module (guix derivations)
  #:use-module (guix build utils)
  #:use-module (guix packages)
  #:use-module (guix build-system)
  #:use-module (guix build-system trivial)
  #:use-module (gnu packages)
  #:use-module (gnu packages bootstrap)
  #:use-module (srfi srfi-34)
  #:use-module (srfi srfi-64)
  #:use-module (rnrs io ports)
  #:use-module (ice-9 popen))

(define %store
  (open-connection-for-tests))


(test-begin "build-utils")

(test-equal "alist-cons-before"
  '((a . 1) (x . 42) (b . 2) (c . 3))
  (alist-cons-before 'b 'x 42 '((a . 1) (b . 2) (c . 3))))

(test-equal "alist-cons-before, reference not found"
  '((a . 1) (b . 2) (c . 3) (x . 42))
  (alist-cons-before 'z 'x 42 '((a . 1) (b . 2) (c . 3))))

(test-equal "alist-cons-after"
  '((a . 1) (b . 2) (x . 42) (c . 3))
  (alist-cons-after 'b 'x 42 '((a . 1) (b . 2) (c . 3))))

(test-equal "alist-cons-after, reference not found"
  '((a . 1) (b . 2) (c . 3) (x . 42))
  (alist-cons-after 'z 'x 42 '((a . 1) (b . 2) (c . 3))))

(test-equal "alist-replace"
  '((a . 1) (b . 77) (c . 3))
  (alist-replace 'b 77 '((a . 1) (b . 2) (c . 3))))

(test-assert "alist-replace, key not found"
  (not (false-if-exception
        (alist-replace 'z 77 '((a . 1) (b . 2) (c . 3))))))

(test-equal "fold-port-matches"
  (make-list 3 "Guix")
  (call-with-input-string "Guix is cool, Guix rocks, and it uses Guile, Guix!"
    (lambda (port)
      (fold-port-matches cons '() "Guix" port))))

(test-equal "fold-port-matches, trickier"
  (reverse '("Guix" "guix" "Guix" "guiX" "Guix"))
  (call-with-input-string "Guix, guix, GuiGuixguiX, Guix"
    (lambda (port)
      (fold-port-matches cons '()
                         (list (char-set #\G #\g)
                               (char-set #\u)
                               (char-set #\i)
                               (char-set #\x #\X))
                         port))))

(test-equal "fold-port-matches, with unmatched chars"
  '("Guix" #\, #\space
    "guix" #\, #\space
    #\G #\u #\i "Guix" "guiX" #\, #\space
    "Guix")
  (call-with-input-string "Guix, guix, GuiGuixguiX, Guix"
    (lambda (port)
      (reverse
       (fold-port-matches cons '()
                          (list (char-set #\G #\g)
                                (char-set #\u)
                                (char-set #\i)
                                (char-set #\x #\X))
                          port
                          cons)))))

(test-assert "wrap-program, one input, multiple calls"
  (let* ((p (package
              (name "test-wrap-program") (version "0") (source #f)
              (synopsis #f) (description #f) (license #f) (home-page #f)
              (build-system trivial-build-system)
              (arguments
               `(#:guile ,%bootstrap-guile
                 #:modules ((guix build utils))
                 #:builder
                 (let* ((out  (assoc-ref %outputs "out"))
                        (bash (assoc-ref %build-inputs "bash"))
                        (foo  (string-append out "/foo")))
                   (begin
                     (use-modules (guix build utils))
                     (mkdir out)
                     (call-with-output-file foo
                       (lambda (p)
                         (format p
                                 "#!~a~%echo \"${GUIX_FOO} ${GUIX_BAR}\"~%"
                                 bash)))
                     (chmod foo #o777)
                     ;; wrap-program uses `which' to find bash for the wrapper
                     ;; shebang, but it can't know about the bootstrap bash in
                     ;; the store, since it's not named "bash".  Help it out a
                     ;; bit by providing a symlink it this package's output.
                     (symlink bash (string-append out "/bash"))
                     (setenv "PATH" out)
                     (wrap-program foo `("GUIX_FOO" prefix ("hello")))
                     (wrap-program foo `("GUIX_BAR" prefix ("world")))
                     #t))))
              (inputs `(("bash" ,(search-bootstrap-binary "bash"
                                                          (%current-system)))))))
         (d (package-derivation %store p)))

    ;; The bootstrap Bash is linked against an old libc and would abort with
    ;; an assertion failure when trying to load incompatible locale data.
    (unsetenv "LOCPATH")

    (and (build-derivations %store (pk 'drv d (list d)))
         (let* ((p    (derivation->output-path d))
                (foo  (string-append p "/foo"))
                (pipe (open-input-pipe foo))
                (str  (get-string-all pipe)))
           (equal? str "hello world\n")))))

(test-end)
