;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2015, 2017 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-file-systems)
  #:use-module (guix store)
  #:use-module (guix modules)
  #:use-module (gnu system uuid)
  #:use-module (gnu system file-systems)
  #:use-module (srfi srfi-1)
  #:use-module (srfi srfi-64)
  #:use-module (rnrs bytevectors)
  #:use-module (ice-9 match))

;; Test the (gnu system file-systems) module.

(test-begin "file-systems")

(test-equal "uuid->string"
  "c5307e6b-d1ba-499d-89c5-cb0b143577c4"
  (uuid->string
   #vu8(197 48 126 107 209 186 73 157 137 197 203 11 20 53 119 196)))

(test-equal "string->uuid"
  '(16 "4dab5feb-d176-45de-b287-9b0a6e4c01cb")
  (let ((uuid (string->uuid "4dab5feb-d176-45de-b287-9b0a6e4c01cb")))
    (list (bytevector-length uuid) (uuid->string uuid))))

(test-assert "uuid"
  (let ((str "4dab5feb-d176-45de-b287-9b0a6e4c01cb"))
    (bytevector=? (uuid-bytevector
                   (uuid "4dab5feb-d176-45de-b287-9b0a6e4c01cb"))
                  (string->uuid "4dab5feb-d176-45de-b287-9b0a6e4c01cb"))))

(test-assert "uuid, syntax error"
  (catch 'syntax-error
    (lambda ()
      (eval '(uuid "foobar") (current-module))
      #f)
    (lambda (key proc message location form . args)
      (and (eq? proc 'uuid)
           (string-contains message "invalid UUID")
           (equal? form '(uuid "foobar" 'dce))))))

(test-assert "file-system-needed-for-boot?"
  (let-syntax ((dummy-fs (syntax-rules ()
                           ((_ directory)
                            (file-system
                              (device "foo")
                              (mount-point directory)
                              (type "ext4"))))))
    (parameterize ((%store-prefix "/gnu/guix/store"))
      (and (file-system-needed-for-boot? (dummy-fs "/"))
           (file-system-needed-for-boot? (dummy-fs "/gnu"))
           (file-system-needed-for-boot? (dummy-fs "/gnu/guix"))
           (file-system-needed-for-boot? (dummy-fs "/gnu/guix/store"))
           (not (file-system-needed-for-boot?
                 (dummy-fs "/gnu/guix/store/foo")))
           (not (file-system-needed-for-boot? (dummy-fs "/gn")))
           (not (file-system-needed-for-boot?
                 (file-system
                   (inherit (dummy-fs (%store-prefix)))
                   (device "/foo")
                   (flags '(bind-mount read-only)))))))))

(test-assert "does not pull (guix config)"
  ;; This module is meant both for the host side and "build side", so make
  ;; sure it doesn't pull in (guix config), which depends on the user's
  ;; config.
  (not (member '(guix config)
               (source-module-closure '((gnu system file-systems))))))

(test-equal "does not pull (gnu packages …)"
  ;; Same story: (gnu packages …) should not be pulled.
  #f
  (find (match-lambda
          (('gnu 'packages _ ..1) #t)
          (_ #f))
        (source-module-closure '((gnu system file-systems)))))

(test-end)