tpm2d: add tests for the tpm2daemon

* configure.ac: Detect TPM emulator and enable tests.
* tests/tpm2dtests/: New test suite.
* tests/Makefile.am: Run tests.

--
Add a set of tests that exercise tpm2daemon handling of keys and
verify compatibility with non-tpm based keys.

Running this test infrastructure requires a tpm emulator, which is
tested for during configuration.  If an emulator is not found, the
tests won't be run since they require the presence of a TPM (although
the TPM handling code will still be built).

Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>

- Fixed tests/Makefile.am for make distcheck.

Signed-off-by: Werner Koch <wk@gnupg.org>

tests/tpm2dtests/setup.scm

@@ -0,0 +1,48 @@
+#!/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 (in-srcdir "tests" "tpm2dtests" "defs.scm"))
+
+(define cache (flag "--create-tarball" *args*))
+(unless (and cache (= 1 (length cache)))
+	(fail "Usage: setup.scm --create-tarball <file> [--use-keyring]"))
+
+(when (> (*verbose*) 0)
+      (define (pad symbol length)
+	(let loop ((cs (string->list (symbol->string symbol)))
+		   (result (make-string length #\space))
+		   (i 0))
+	  (if (null? cs)
+	      result
+	      (begin
+		(string-set! result i (car cs))
+		(loop (cdr cs) result (+ 1 i))))))
+      (log " I am going to use these tools:\n"
+	   "==============================")
+      (for-each
+       (lambda (t)
+	 (log (pad t 25) (tool t)))
+       '(gpgconf gpg gpg-agent scdaemon gpgsm dirmngr gpg-connect-agent
+		 gpg-preset-passphrase gpgtar pinentry)))
+
+;;(setenv "GNUPGHOME" (getcwd) #t)
+(create-gpghome)
+(start-agent)
+(stop-agent)
+(call-check `(,(tool 'gpgtar) --create --output ,(car cache) "."))