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

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

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

tests/openpgp/Makefile.am

@@ -48,6 +48,7 @@ XTESTS = \
 	decrypt-multifile.scm \
 	decrypt-dsa.scm \
 	decrypt-session-key.scm \
+	decrypt-unwrap-verify.scm \
 	sigs.scm \
 	sigs-dsa.scm \
 	encrypt.scm \

tests/openpgp/decrypt-unwrap-verify.scm

@@ -0,0 +1,41 @@
+#!/usr/bin/env gpgscm
+
+;; Copyright (C) 2017 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)
+
+(lettmp (steve's-key)
+  (call-check `(,@gpg --output ,steve's-key --export "1D777619BE310D79"))
+
+  (for-each-p
+   "Checking unwrapping the encryption."
+   (lambda (name)
+     ;; First, unwrap the encrypted message using Steve's secret key.
+     (lettmp (unwrapped)
+       (tr:do
+	(tr:open (in-srcdir "samplemsgs" (string-append name ".asc")))
+	(tr:gpg "" `(--yes --decrypt --unwrap))
+	(tr:write-to unwrapped))
+
+       ;; Then, verify the signature with a clean working directory
+       ;; containing only Steve's public key.
+       (with-ephemeral-home-directory
+	(call-check `(,@gpg --import ,steve's-key))
+	(call-check `(,@gpg --verify ,unwrapped)))))
+  '("encsig-2-keys-3" "encsig-2-keys-4")))