tests: Add test for '--decrypt --multifile'.

* tests/openpgp/Makefile.am (XTESTS): Add new test.
* tests/openpgp/decrypt-multifile.scm: New file.

Signed-off-by: Justus Winter <justus@g10code.com>

tests/openpgp/Makefile.am

@@ -47,6 +47,7 @@ XTESTS = \
 	version.scm \
 	mds.scm \
 	decrypt.scm \
+	decrypt-multifile.scm \
 	decrypt-dsa.scm \
 	sigs.scm \
 	sigs-dsa.scm \

tests/openpgp/decrypt-multifile.scm

@@ -0,0 +1,47 @@
+#!/usr/bin/env gpgscm
+
+;; Copyright (C) 2016 g10 Code GmbH
+;;
+;; This file is part of GnuPG.
+;;
+;; GnuPG 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.
+;;
+;; GnuPG 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 this program; if not, see <http://www.gnu.org/licenses/>.
+
+(load (with-path "defs.scm"))
+(setup-legacy-environment)
+
+(info "Checking decryption of supplied files using --multifile.")
+
+(define my-wd (getcwd))
+(define encrypted-files (map (lambda (name)
+			       (string-append name ".asc"))
+			     plain-files))
+
+(with-temporary-working-directory
+ ;; First, copy the files so that GnuPG writes the decrypted files here
+ ;; and not into the source directory.
+ (for-each (lambda (name)
+	     (file-copy (in-srcdir name) name))
+	   encrypted-files)
+
+ ;; Now decrypt all files.
+ (call-check `(,@gpg --decrypt --multifile ,@encrypted-files))
+
+ ;; And verify the result.  Reference files are in our original
+ ;; working directory courtesy of setup-legacy-environment.
+ (for-each-p
+  "Verifying files:"
+  (lambda (name)
+    (unless (file=? (path-join my-wd name) name)
+	    (error "decrypted file differs")))
+  plain-files))