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;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2012, 2015, 2016, 2019 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 build utils)
  #:use-module ((gnu build bootloader)
                #:select (invoke/quiet))
  #:use-module ((guix utils)
                #:select (%current-system call-with-temporary-directory))
  #:use-module (gnu packages)
  #:use-module (gnu packages bootstrap)
  #:use-module (srfi srfi-34)
  #:use-module (srfi srfi-35)
  #:use-module (srfi srfi-64)
  #:use-module (rnrs io ports)
  #:use-module (ice-9 popen))


(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-equal "wrap-program, one input, multiple calls"
  "hello world\n"
  (call-with-temporary-directory
   (lambda (directory)
     (let ((bash (search-bootstrap-binary "bash" (%current-system)))
           (foo  (string-append directory "/foo")))

       (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.
       (with-environment-variable "PATH" (dirname bash)
         (wrap-program foo `("GUIX_FOO" prefix ("hello")))
         (wrap-program foo `("GUIX_BAR" prefix ("world")))

         ;; 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")

         (let* ((pipe (open-input-pipe foo))
                (str  (get-string-all pipe)))
           (with-directory-excursion directory
             (for-each delete-file '("foo" ".foo-real")))
           (and (zero? (close-pipe pipe))
                str)))))))

(test-assert "invoke/quiet, success"
  (begin
    (invoke/quiet "true")
    #t))

(test-assert "invoke/quiet, failure"
  (guard (c ((message-condition? c)
             (string-contains (condition-message c) "This is an error.")))
    (invoke/quiet "sh" "-c" "echo This is an error. ; false")
    #f))

(test-assert "invoke/quiet, failure, message on stderr"
  (guard (c ((message-condition? c)
             (string-contains (condition-message c)
                              "This is another error.")))
    (invoke/quiet "sh" "-c" "echo This is another error. >&2 ; false")
    #f))

(test-end)
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