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-rw-r--r--src/shared/test-tables.h46
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diff --git a/src/shared/test-tables.h b/src/shared/test-tables.h
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+/***
+ This file is part of systemd
+
+ Copyright 2013 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 <stdio.h>
+#include <stdlib.h>
+
+typedef const char* (*lookup_t)(int);
+typedef int (*reverse_t)(const char*);
+
+static inline void _test_table(const char *name,
+ lookup_t lookup,
+ reverse_t reverse,
+ int size) {
+ int i;
+
+ for (i = 0; i < size; i++) {
+ const char* val = lookup(i);
+ int rev = -1;
+
+ if (val)
+ rev = reverse(val);
+
+ printf("%s: %d → %s → %d\n", name, i, val, rev);
+ if (!val || rev != i)
+ exit(EXIT_FAILURE);
+ }
+}
+
+#define test_table(lower, upper) \
+ _test_table(STRINGIFY(lower), lower##_to_string, lower##_from_string, _##upper##_MAX)