--- /dev/null
+/* With errlog == NULL, we never get a "failure". */
+#include <ccan/tap/tap.h>
+#include <stdlib.h>
+#include <ccan/opt/opt.c>
+#include <ccan/opt/usage.c>
+#include <ccan/opt/helpers.c>
+#include <ccan/opt/parse.c>
+#include "utils.h"
+
+int main(int argc, char *argv[])
+{
+ plan_tests(8);
+
+ /* Simple short args.*/
+ opt_register_noarg("-a", test_noarg, NULL, "All");
+ opt_register_early_noarg("-b|--blong", test_noarg, NULL, "All");
+
+ /* This is OK. */
+ ok1(parse_early_args_incomplete(&argc, &argv, "-c", NULL));
+ ok1(test_cb_called == 0);
+
+ /* Skips letters correctly */
+ ok1(parse_early_args_incomplete(&argc, &argv, "-ca", NULL));
+ ok1(test_cb_called == 0); /* a is not an early arg! */
+
+ test_cb_called = 0;
+ ok1(parse_early_args_incomplete(&argc, &argv, "-bca", NULL));
+ ok1(test_cb_called == 1);
+
+ test_cb_called = 0;
+ ok1(parse_early_args_incomplete(&argc, &argv, "--unknown", "--also-unknown", "--blong", NULL));
+ ok1(test_cb_called == 1);
+
+ /* parse_args allocates argv */
+ free(argv);
+ return exit_status();
+}