tests: introduce test_must_fail

diff --git a/builtin-checkout.c b/builtin-checkout.c
index 4a4bb8b77dc9251849a2ecf625a4efb9ce154fdb..9579ff4ab12dfc1c48d6e530a93d0d18e07c2ebb 100644 (file)
--- a/builtin-checkout.c
+++ b/builtin-checkout.c
@@ -545,6 +545,10 @@ int cmd_checkout(int argc, const char **argv, const char *prefix)
 
        if (argc) {
                const char **pathspec = get_pathspec(prefix, argv);
+
+               if (!pathspec)
+                       die("invalid path specification");
+
                /* Checkout paths */
                if (opts.new_branch || opts.force || opts.merge) {
                        if (argc == 1) {