utils: Move base16 procedures to (guix base16).

* guix/utils.scm (bytevector->base16-string, base16-string->bytevector):
Move to...
* guix/base16.scm: ... here.  New file.
* tests/utils.scm ("bytevector->base16-string->bytevector"): Move to...
* tests/base16.scm: ... here.  New file.
* Makefile.am (MODULES): Add guix/base16.scm.
(SCM_TESTS): Add tests/base16.scm.
* build-aux/download.scm, guix/derivations.scm,
guix/docker.scm, guix/import/snix.scm, guix/pk-crypto.scm,
guix/scripts/authenticate.scm, guix/scripts/download.scm,
guix/scripts/hash.scm, guix/store.scm, tests/hash.scm,
tests/pk-crypto.scm: Adjust imports accordingly.

1 files changed, 34 insertions, 0 deletions

diff --git a/tests/base16.scm b/tests/base16.scm
new file mode 100644
index 0000000000..a64b650bec
--- /dev/null
+++ b/tests/base16.scm
@@ -0,0 +1,34 @@
+;;; GNU Guix --- Functional package management for GNU
+;;; Copyright © 2012, 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-base16)
+  #:use-module (guix base16)
+  #:use-module (srfi srfi-1)
+  #:use-module (srfi srfi-64)
+  #:use-module (rnrs bytevectors))
+
+(test-begin "base16")
+
+(test-assert "bytevector->base16-string->bytevector"
+  (every (lambda (bv)
+           (equal? (base16-string->bytevector
+                    (bytevector->base16-string bv))
+                   bv))
+         (map string->utf8 '("" "f" "fo" "foo" "foob" "fooba" "foobar"))))
+
+(test-end "base16")