test-ask-password-api: add a manual test for password reading

Makefile.am

@@ -1417,7 +1417,8 @@ manual_tests += \
 	test-ipcrm \
 	test-btrfs \
 	test-acd \
-	test-ipv4ll-manual
+	test-ipv4ll-manual \
+	test-ask-password-api
 
 if HAVE_LIBIPTC
 manual_tests += \
@@ -1873,6 +1874,12 @@ test_rlimit_util_SOURCES = \
 test_rlimit_util_LDADD = \
 	libshared.la
 
+test_ask_password_api_SOURCES = \
+	src/test/test-ask-password-api.c
+
+test_ask_password_api_LDADD = \
+	libshared.la
+
 BUILT_SOURCES += \
 	src/test/test-hashmap-ordered.c
 

src/test/test-ask-password-api.c

@@ -0,0 +1,40 @@
+/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
+
+/***
+  This file is part of systemd.
+
+  Copyright 2016 Zbigniew Jędrzejewski-Szmek
+
+  systemd is free software; you can redistribute it and/or modify it
+  under the terms of the GNU Lesser General Public License as published by
+  the Free Software Foundation; either version 2.1 of the License, or
+  (at your option) any later version.
+
+  systemd 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
+  Lesser General Public License for more details.
+
+  You should have received a copy of the GNU Lesser General Public License
+  along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include "alloc-util.h"
+#include "ask-password-api.h"
+#include "log.h"
+
+static void ask_password(void) {
+        int r;
+        _cleanup_free_ char *ret;
+
+        r = ask_password_tty("hello?", "da key", 0, 0, NULL, &ret);
+        assert(r >= 0);
+
+        log_info("Got %s", ret);
+}
+
+int main(int argc, char **argv) {
+        log_parse_environment();
+
+        ask_password();
+}