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authorCaleb Ristvedt <caleb.ristvedt@cune.org>2018-05-27 23:20:54 +0200
committerLudovic Courtès <ludo@gnu.org>2018-06-01 15:35:54 +0200
commitbf5bf5778cb7c3a2475c6acd707abc925b1819aa (patch)
tree34f209fea10a40e45468ecbc4ad15c46905df114 /tests/store-deduplication.scm
parent285cc75c3160421005ba0181490de4b290755b63 (diff)
downloadguix-bf5bf5778cb7c3a2475c6acd707abc925b1819aa.tar
guix-bf5bf5778cb7c3a2475c6acd707abc925b1819aa.tar.gz
Add (guix store deduplication).
* guix/store/database.scm (register-path): Add #:deduplicate? and call 'deduplicate' when it's true. (counting-wrapper-port, nar-sha256): Move to... * guix/store/deduplication.scm: ... here. New file. * tests/store-deduplication.scm: New file. * Makefile.am (STORE_MODULES): Add deduplication.scm. (SCM_TESTS) [HAVE_GUILE_SQLITE3]: Add store-deduplication.scm. Co-authored-by: Ludovic Courtès <ludo@gnu.org>
Diffstat (limited to 'tests/store-deduplication.scm')
-rw-r--r--tests/store-deduplication.scm64
1 files changed, 64 insertions, 0 deletions
diff --git a/tests/store-deduplication.scm b/tests/store-deduplication.scm
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+;;; GNU Guix --- Functional package management for GNU
+;;; Copyright © 2018 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-store-deduplication)
+ #:use-module (guix tests)
+ #:use-module (guix store deduplication)
+ #:use-module (guix hash)
+ #:use-module ((guix utils) #:select (call-with-temporary-directory))
+ #:use-module (guix build utils)
+ #:use-module (rnrs bytevectors)
+ #:use-module (ice-9 binary-ports)
+ #:use-module (srfi srfi-1)
+ #:use-module (srfi srfi-64))
+
+(test-begin "store-deduplication")
+
+(test-equal "deduplicate"
+ (cons* #t #f ;inode comparisons
+ 2 (make-list 5 6)) ;'nlink' values
+
+ (call-with-temporary-directory
+ (lambda (store)
+ (let ((data (string->utf8 "Hello, world!"))
+ (identical (map (lambda (n)
+ (string-append store "/" (number->string n)))
+ (iota 5)))
+ (unique (string-append store "/unique")))
+ (for-each (lambda (file)
+ (call-with-output-file file
+ (lambda (port)
+ (put-bytevector port data))))
+ identical)
+ (call-with-output-file unique
+ (lambda (port)
+ (put-bytevector port (string->utf8 "This is unique."))))
+
+ (for-each (lambda (file)
+ (deduplicate file (sha256 data) #:store store))
+ identical)
+ (deduplicate unique (nar-sha256 unique) #:store store)
+
+ ;; (system (string-append "ls -lRia " store))
+ (cons* (apply = (map (compose stat:ino stat) identical))
+ (= (stat:ino (stat unique))
+ (stat:ino (stat (car identical))))
+ (stat:nlink (stat unique))
+ (map (compose stat:nlink stat) identical))))))
+
+(test-end "store-deduplication")