simple test for the if_nameindex() related functions

test/inet/if_nameindex.c

@@ -0,0 +1,61 @@
+/* if_nameindex.c: test the if_nameindex() function
+ *
+ * Copyright (C) 2006 Erik Andersen <andersen@uclibc.org>
+ *
+ * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <net/if.h>
+
+static char ifname[IF_NAMESIZE];
+
+void test_if_nameindex(void)
+{
+	size_t i;
+	struct if_nameindex *ret;
+
+	ret = if_nameindex();
+
+	if (ret == NULL) {
+		perror("if_nameindex()");
+		exit(1);
+	}
+
+	printf("--- if_nameindex()\n");
+	for (i=0; ret[i].if_name; ++i)
+		printf("%i: %s\n", ret[i].if_index, ret[i].if_name);
+
+	if_freenameindex(ret);
+}
+
+void test_if_indextoname(void)
+{
+	if (if_indextoname(1, ifname) == NULL) {
+		perror("if_nameindex()");
+		exit(1);
+	}
+
+	printf("if_indextoname(1) = %s\n", ifname);
+}
+
+void test_if_nametoindex(void)
+{
+	int ifindex = if_nametoindex(ifname);
+
+	if (ifindex == 0) {
+		perror("if_nametoindex()");
+		exit(1);
+	}
+
+	printf("if_nametoindex(%s) = %i\n", ifname, ifindex);
+}
+
+int main()
+{
+	test_if_nameindex();
+	test_if_indextoname();
+	test_if_nametoindex();
+	return 0;
+}