;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2017, 2020 Ludovic Courtès <ludo@gnu.org>
;;; Copyright © 2022 Simon Tournier <zimon.toutoune@gmail.com>
;;;
;;; 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-cache)
  #:use-module (guix cache)
  #:use-module (srfi srfi-1)
  #:use-module (srfi srfi-19)
  #:use-module (srfi srfi-64)
  #:use-module ((guix utils) #:select (call-with-temporary-directory))
  #:use-module (ice-9 match))

(test-begin "cache")

(test-equal "remove-expired-cache-entries"
  '("o" "l" "d")
  (let* ((removed '())
         (now     (time-second (current-time time-monotonic)))
         (ttl     100)
         (stamp   (match-lambda
                    ((or "n" "e" "w") (+ now 100))
                    ((or "o" "l" "d") (- now 100))))
         (delete  (lambda (entry)
                    (set! removed (cons entry removed)))))
    (remove-expired-cache-entries (reverse '("n" "e" "w"
                                             "o" "l" "d"))
                                  #:entry-expiration stamp
                                  #:delete-entry delete)
    removed))

(define-syntax-rule (test-cache-cleanup cache exp ...)
  (call-with-temporary-directory
   (lambda (cache)
     (let* ((deleted '())
            (delete! (lambda (entry)
                       (set! deleted (cons entry deleted)))))
       exp ...
       (maybe-remove-expired-cache-entries cache
                                           (const '("a" "b" "c"))
                                           #:entry-expiration (const 0)
                                           #:delete-entry delete!)
       (reverse deleted)))))

(test-equal "maybe-remove-expired-cache-entries, first cleanup"
  '("a" "b" "c")
  (test-cache-cleanup cache))

(test-equal "maybe-remove-expired-cache-entries, no cleanup needed"
  '()
  (test-cache-cleanup cache
    (call-with-output-file (string-append cache "/last-expiry-cleanup")
      (lambda (port)
        (display (+ (time-second (current-time time-monotonic)) 100)
                 port)))))

(test-equal "maybe-remove-expired-cache-entries, cleanup needed"
  '("a" "b" "c")
  (test-cache-cleanup cache
    (call-with-output-file (string-append cache "/last-expiry-cleanup")
      (lambda (port)
        (display 0 port)))))

(test-equal "maybe-remove-expired-cache-entries, empty cache"
  '("a" "b" "c")
  (test-cache-cleanup cache
    (call-with-output-file (string-append cache "/last-expiry-cleanup")
      (lambda (port)
        (display "" port)))))

(test-equal "maybe-remove-expired-cache-entries, corrupted cache"
  '("a" "b" "c")
  (test-cache-cleanup cache
    (call-with-output-file (string-append cache "/last-expiry-cleanup")
      (lambda (port)
        (display "1\"34657890" port)))))

(test-end "cache")

;;; Local Variables:
;;; eval: (put 'test-cache-cleanup 'scheme-indent-function 1)
;;; End:
pan title='2022-12-12 15:03:35 +0100'>2022-12-12</span></td><td><a href='/guix/commit/gnu/system/examples?id=302a84a593e4be417d739caf4e5385df536e3943'>Merge branch 'version-1.4.0'</a></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2022-12-09 16:40:53 +0100'>2022-12-09</span></td><td><a href='/guix/commit/gnu/system/examples?id=755c4b496e24f2df5f1b0f4a3873e9e00bae1fdc'>system: Remove unused yggdrasil OS template.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2022-12-04 00:37:11 -0500'>2022-12-04</span></td><td><a href='/guix/commit/gnu/system/examples?id=08dc9f2ca2e96476aa51c906c8ba01ca5d033568'>gnu: Do not use 'local-file' in Raspberry Pi OS examples.</a><span class='msg-avail'>...</span></td><td>Maxim Cournoyer</td></tr>
<tr><td><span title='2022-12-01 14:31:29 -0500'>2022-12-01</span></td><td><a href='/guix/commit/gnu/system/examples?id=c7793b82efd3383a9f7adf0dfa82d71ee032e41b'>gnu: raspberry-pi: Add a bootloader-chain for the Raspberry Pi and os examples.</a><span class='msg-avail'>...</span></td><td>Stefan</td></tr>
<tr><td><span title='2022-10-23 02:00:06 +0200'>2022-10-23</span></td><td><a href='/guix/commit/gnu/system/examples?id=19f3dbcb4d4261b6d3813d36174b8ca6ac52d2ea'>system: Support bare-bones serial console.</a><span class='msg-avail'>...</span></td><td>Tobias Geerinckx-Rice</td></tr>
<tr><td><span title='2022-08-09 15:16:06 +0200'>2022-08-09</span></td><td><a href='/guix/commit/gnu/system/examples?id=fdafd404325413da4d5fdd717c84e57a51c60fe2'>maint: Use a pretty version string in ISO and VM images.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2022-08-09 15:16:06 +0200'>2022-08-09</span></td><td><a href='/guix/commit/gnu/system/examples?id=95a03aa5c507d48e2cde19ea007b8f90a4e0108a'>system: install: Always use 'current-guix'.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>