--- /dev/null
+#define _GNU_SOURCE
+#include <ccan/tap/tap.h>
+#include <stdarg.h>
+#include <setjmp.h>
+#include <stdlib.h>
+#include <stdarg.h>
+#include "utils.h"
+#include <ccan/opt/opt.c>
+#include <ccan/opt/usage.c>
+
+/* Test iterators. */
+int main(int argc, char *argv[])
+{
+ unsigned i, len;
+ const char *p;
+
+ plan_tests(37);
+ opt_register_table(subtables, NULL);
+
+ p = first_lopt(&i, &len);
+ ok1(i == 0);
+ ok1(len == 3);
+ ok1(strncmp(p, "jjj", len) == 0);
+ p = next_lopt(p, &i, &len);
+ ok1(i == 0);
+ ok1(len == 3);
+ ok1(strncmp(p, "lll", len) == 0);
+ p = next_lopt(p, &i, &len);
+ ok1(i == 1);
+ ok1(len == 3);
+ ok1(strncmp(p, "mmm", len) == 0);
+ p = next_lopt(p, &i, &len);
+ ok1(i == 5);
+ ok1(len == 3);
+ ok1(strncmp(p, "ddd", len) == 0);
+ p = next_lopt(p, &i, &len);
+ ok1(i == 6);
+ ok1(len == 3);
+ ok1(strncmp(p, "eee", len) == 0);
+ p = next_lopt(p, &i, &len);
+ ok1(i == 7);
+ ok1(len == 3);
+ ok1(strncmp(p, "ggg", len) == 0);
+ p = next_lopt(p, &i, &len);
+ ok1(i == 8);
+ ok1(len == 3);
+ ok1(strncmp(p, "hhh", len) == 0);
+ p = next_lopt(p, &i, &len);
+ ok1(!p);
+
+ p = first_sopt(&i);
+ ok1(i == 0);
+ ok1(*p == 'j');
+ p = next_sopt(p, &i);
+ ok1(i == 0);
+ ok1(*p == 'l');
+ p = next_sopt(p, &i);
+ ok1(i == 1);
+ ok1(*p == 'm');
+ p = next_sopt(p, &i);
+ ok1(i == 2);
+ ok1(*p == 'a');
+ p = next_sopt(p, &i);
+ ok1(i == 3);
+ ok1(*p == 'b');
+ p = next_sopt(p, &i);
+ ok1(i == 7);
+ ok1(*p == 'g');
+ p = next_sopt(p, &i);
+ ok1(i == 8);
+ ok1(*p == 'h');
+ p = next_sopt(p, &i);
+ ok1(!p);
+
+ return exit_status();
+}