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guix/tests/cache.scm

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Scheme

;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 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-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))
(cond-expand
(guile-2.2
;; Guile 2.2.2 has a bug whereby 'time-monotonic' objects have seconds and
;; nanoseconds swapped (fixed in Guile commit 886ac3e). Work around it.
(define time-monotonic time-tai))
(else #t))
(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-end "cache")
;;; Local Variables:
;;; eval: (put 'test-cache-cleanup 'scheme-indent-function 1)
;;; End: