test: add support for unit testing

test/unit/test.h

@@ -0,0 +1,41 @@
+/*
+ **********************************************************************
+ * Copyright (C) Miroslav Lichvar  2016
+ * 
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of version 2 of the GNU General Public License as
+ * published by the Free Software Foundation.
+ * 
+ * This program 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, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ * 
+ **********************************************************************
+ */
+
+#ifndef GOT_TEST_H
+#define GOT_TEST_H
+
+#include <addressing.h>
+
+extern void test_unit(void);
+
+#define TEST_CHECK(expr) \
+  do { \
+    if (!(expr)) { \
+      test_fail(__LINE__); \
+      exit(1); \
+    } \
+  } while (0)
+
+extern void test_fail(int line);
+
+extern void get_random_address(IPAddr *ip, int family, int bits);
+extern void swap_address_bit(IPAddr *ip, unsigned int b);
+
+#endif