;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2012, 2013, 2014, 2015, 2017, 2018, 2019 Ludovic Courtès <ludo@gnu.org>
;;; Copyright © 2018 Jan (janneke) Nieuwenhuizen <janneke@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.
;;;
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;;; 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-union)
  #:use-module (guix tests)
  #:use-module (guix store)
  #:use-module (guix utils)
  #:</td></tr></table>
<table class='tabs'><tr><td>
<a href='/guix/about/'>about</a><a href='/guix/'>summary</a><a href='/guix/refs/?id=125f52c443c0257586421800d3a2e64f58759735'>refs</a><a href='/guix/log/gnu/services.scm'>log</a><a href='/guix/tree/gnu/services.scm?id=125f52c443c0257586421800d3a2e64f58759735'>tree</a><a href='/guix/commit/gnu/services.scm?id=125f52c443c0257586421800d3a2e64f58759735'>commit</a><a class='active' href='/guix/diff/gnu/services.scm?id=125f52c443c0257586421800d3a2e64f58759735'>diff</a></td><td class='form'><form class='right' method='get' action='/guix/log/gnu/services.scm'>
<input type='hidden' name='id' value='125f52c443c0257586421800d3a2e64f58759735'/><select name='qt'>
<option value='grep'>log msg</option>
<option value='author'>author</option>
<option value='committer'>committer</option>
<option value='range'>range</option>
</select>
<input class='txt' type='search' size='10' name='q' value=''/>
<input type='submit' value='search'/>
</form>
</td></tr></table>
<div class='path'>path: <a href='/guix/diff/?id=125f52c443c0257586421800d3a2e64f58759735'>root</a>/<a href='/guix/diff/gnu?id=125f52c443c0257586421800d3a2e64f58759735'>gnu</a>/<a href='/guix/diff/gnu/services.scm?id=125f52c443c0257586421800d3a2e64f58759735'>services.scm</a></div><div class='content'><div class='cgit-panel'><b>diff options</b><form method='get'><input type='hidden' name='id' value='125f52c443c0257586421800d3a2e64f58759735'/><table><tr><td colspan='2'/></tr><tr><td class='label'>context:</td><td class='ctrl'><select name='context' onchange='this.form.submit();'><option value='1'>1</option><option value='2'>2</option><option value='3' selected='selected'>3</option><option value='4'>4</option><option value='5'>5</option><option value='6'>6</option><option value='7'>7</option><option value='8'>8</option><option value='9'>9</option><option value='10'>10</option><option value='15'>15</option><option value='20'>20</option><option value='25'>25</option><option value='30'>30</option><option value='35'>35</option><option value='40'>40</option></select></td></tr><tr><td class='label'>space:</td><td class='ctrl'><select name='ignorews' onchange='this.form.submit();'><option value='0' selected='selected'>include</option><option value='1'>ignore</option></select></td></tr><tr><td class='label'>mode:</td><td class='ctrl'><select name='dt' onchange='this.form.submit();'><option value='0' selected='selected'>unified</option><option value='1'>ssdiff</option><option value='2'>stat only</option></select></td></tr><tr><td/><td class='ctrl'><noscript><input type='submit' value='reload'/></noscript></td></tr></table></form></div><div class='diffstat-header'><a href='/guix/diff/?id=125f52c443c0257586421800d3a2e64f58759735'>Diffstat</a> (limited to 'gnu/services.scm')</div><table summary='diffstat' class='diffstat'></table><div class='diffstat-summary'>0 files changed, 0 insertions, 0 deletions</div><table summary='diff' class='diff'><tr><td></td></tr></table></div> <!-- class=content -->
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sts 3)))))
         (builder `(begin
                     (use-modules (guix build union))
                     (union-build (assoc-ref %outputs "out")
                                  (map cdr %build-inputs))))
         (drv
          (build-expression->derivation %store "union-test"
                                        builder
                                        #:inputs inputs
                                        #:modules '((guix build union)))))
    (and (build-derivations %store (list (pk 'drv drv)))
         (with-directory-excursion (derivation->output-path drv)
           (and (file-exists? "bin/touch")
                (file-exists? "bin/gcc")
                (file-exists? "bin/ld")
                (file-exists? "lib/libc.so")
                (directory-exists? "lib/gcc")
                (file-exists? "include/unistd.h")

                ;; The 'include/c++' sub-directory is only found in
                ;; gcc-bootstrap, so it should be unified in a
                ;; straightforward way, without traversing it.
                (eq? 'symlink (stat:type (lstat "include/c++")))

                ;; Conversely, several inputs have a 'bin' sub-directory, so
                ;; unifying it requires traversing them all, and creating a
                ;; new 'bin' sub-directory in the profile.
                (eq? 'directory (stat:type (lstat "bin"))))))))

(test-assert "union-build collision first & last"
  (let* ((guile   (package-derivation %store %bootstrap-guile))
         (fake    (build-expression->derivation
                   %store "fake-guile"
                   '(begin
                      (use-modules (guix build utils))
                      (let ((out (assoc-ref %outputs "out")))
                        (mkdir-p (string-append out "/bin"))
                        (call-with-output-file (string-append out "/bin/guile")
                          (const #t))))
                   #:modules '((guix build utils))))
         (builder (lambda (policy)
                    `(begin
                       (use-modules (guix build union)
                                    (srfi srfi-1))
                       (union-build (assoc-ref %outputs "out")
                                    (map cdr %build-inputs)
                                    #:resolve-collision ,policy))))
         (drv1
          (build-expression->derivation %store "union-first"
                                        (builder 'first)
                                        #:inputs `(("guile" ,guile)
                                                   ("fake" ,fake))
                                        #:modules '((guix build union))))
         (drv2
          (build-expression->derivation %store "union-last"
                                        (builder 'last)
                                        #:inputs `(("guile" ,guile)
                                                   ("fake" ,fake))
                                        #:modules '((guix build union)))))
    (and (build-derivations %store (list drv1 drv2))
         (with-directory-excursion (derivation->output-path drv1)
           (string=? (readlink "bin/guile")
                     (string-append (derivation->output-path guile)
                                    "/bin/guile")))
         (with-directory-excursion (derivation->output-path drv2)
           (string=? (readlink "bin/guile")
                     (string-append (derivation->output-path fake)
                                    "/bin/guile"))))))

(test-assert "union-build #:create-all-directories? #t"
  (let* ((build  `(begin
                    (use-modules (guix build union))
                    (union-build (assoc-ref %outputs "out")
                                 (map cdr %build-inputs)
                                 #:create-all-directories? #t)))
         (input  (package-derivation %store %bootstrap-guile))
         (drv    (build-expression->derivation %store "union-test-all-dirs"
                                               build
                                               #:modules '((guix build union))
                                               #:inputs `(("g" ,input)))))
    (and (build-derivations %store (list drv))
         (with-directory-excursion (derivation->output-path drv)
           ;; Even though there's only one input to the union,
           ;; #:create-all-directories? #t must have created bin/ rather than
           ;; making it a symlink to Guile's bin/.
           (and (file-exists? "bin/guile")
                (file-is-directory? "bin")
                (eq? 'symlink (stat:type (lstat "bin/guile"))))))))

(letrec-syntax ((test-relative-file-name
                 (syntax-rules (=>)
                   ((_ (reference file => expected) rest ...)
                    (begin
                      (test-equal (string-append "relative-file-name "
                                                 reference " " file)
                        expected
                        (relative-file-name reference file))
                      (test-relative-file-name rest ...)))
                   ((_)
                    #t))))
  (test-relative-file-name
   ("/a/b" "/a/c/d"     => "../c/d")
   ("/a/b" "/a/b"       => "")
   ("/a/b" "/a"         => "..")
   ("/a/b" "/a/b/c/d"   => "c/d")
   ("/a/b/c" "/a/d/e/f" => "../../d/e/f")))

(test-end)