5 check_expected ([<<'EOF', <<'EOF']);
7 (dir-open) mkdir "xyzzy"
8 (dir-open) open "xyzzy"
9 (dir-open) write "xyzzy"
10 (dir-open) write "xyzzy" (must return -1, actually -1)
15 (dir-open) mkdir "xyzzy"
16 (dir-open) open "xyzzy"
17 (dir-open) write "xyzzy"