is_deeply([$oid_hex, $type, $size], \@x, 'got expected header');
is($arg_res, $arg, 'arg passed to cat_async');
is_deeply($raw, $bref, 'blob result matches');
- is_deeply($missing, [ undef, undef, undef, undef, $arg],
+ is_deeply($missing, [ undef, 'non-existent', 'missing', undef, $arg],
'non-existent blob gives expected result');
}