;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2015 Eric Bavier <bavier@member.fsf.org>
;;; Copyright © 2016 Alex Sassmannshausen <alex@pompo.co>
;;;
;;; 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-cpan)
  #:use-module (guix import cpan)
  #:use-module (guix base32)
  #:use-module (guix hash)
  #:use-module (guix tests)
  #:use-module (guix grafts)
  #:use-module (srfi srfi-64)
  #:use-module (ice-9 match))

;; Globally disable grafts because they can trigger early builds.
(%graft? #f)

(define test-json
  "{
  \"metadata\" : {
    \"prereqs\" : {
      \"runtime\" : {
        \"requires\" : {
          \"Test::Script\" : \"1.05\",
        }
      }
    }
    \"name\" : \"Foo-Bar\",
    \"version\" : \"0.1\"
  }
  \"name\" : \"Foo-Bar-0.1\",
  \"distribution\" : \"Foo-Bar\",
  \"license\" : [
    \"perl_5\"
  ],
  \"abstract\" : \"Fizzle Fuzz\",
  \"download_url\" : \"http://example.com/Foo-Bar-0.1.tar.gz\",
  \"author\" : \"Guix\",
  \"version\" : \"0.1\"
}")

(define test-source
  "foobar")

(test-begin "cpan")

(test-assert "cpan->guix-package"
  ;; Replace network resources with sample data.
  (mock ((guix build download) url-fetch
         (lambda* (url file-name
                       #:key
                       (mirrors '()) verify-certificate?)
           (with-output-to-file file-name
             (lambda ()
               (display
                (match url
                  ("http://example.com/Foo-Bar-0.1.tar.gz"
                   test-source)
                  (_ (error "Unexpected URL: " url))))))))
        (mock ((guix http-client) http-fetch
               (lambda (url . rest)
                 (match url
                   ("https://fastapi.metacpan.org/v1/release/Foo-Bar"
                    (values (open-input-string test-json)
                            (string-length test-json)))
                   ("https://fastapi.metacpan.org/v1/module/Test::Script?fields=distribution"
                    (let ((result "{ \"distribution\" : \"Test-Script\" }"))
                      (values (open-input-string result)
                              (string-length result))))
                   (_ (error "Unexpected URL: " url)))))
              (match (cpan->guix-package "Foo::Bar")
                (('package
                   ('name "perl-foo-bar")
                   ('version "0.1")
                   ('source ('origin
                              ('method 'url-fetch)
                              ('uri ('string-append "http://example.com/Foo-Bar-"
                                                    'version ".tar.gz"))
                              ('sha256
                               ('base32
                                (? string? hash)))))
                   ('build-system 'perl-build-system)
                   ('inputs
                    ('quasiquote
                     (("perl-test-script" ('unquote 'perl-test-script)))))
                   ('home-page "http://search.cpan.org/dist/Foo-Bar")
                   ('synopsis "Fizzle Fuzz")
                   ('description 'fill-in-yourself!)
                   ('license (package-license perl)))
                 (string=? (bytevector->nix-base32-string
                            (call-with-input-string test-source port-sha256))
                           hash))
                (x
                 (pk 'fail x #f))))))

(test-equal "source-url-http"
  ((@@ (guix import cpan) cpan-source-url)
   `(("download_url" .
      "http://cpan.metacpan.org/authors/id/T/TE/TEST/Foo-Bar-0.1.tar.gz")))
  "mirror://cpan/authors/id/T/TE/TEST/Foo-Bar-0.1.tar.gz")

(test-equal "source-url-https"
  ((@@ (guix import cpan) cpan-source-url)
   `(("download_url" .
      "https://cpan.metacpan.org/authors/id/T/TE/TEST/Foo-Bar-0.1.tar.gz")))
  "mirror://cpan/authors/id/T/TE/TEST/Foo-Bar-0.1.tar.gz")

(test-end "cpan")
