mte/unikernel/duniverse/dune_/test/unit-tests/sexp_tests.ml

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2025-11-11 02:07:51 +01:00
open! Stdune
let () = Printexc.record_backtrace true
(* Test that all strings of length <= 3 such that [Dune_lang.Atom.is_valid s]
are recognized as atoms by the parser *)
let () =
for len = 0 to 3 do
let s = Bytes.create len in
for i = 0 to (1 lsl (len * 8)) - 1 do
if len > 0 then Bytes.set s 0 (Char.chr (i land 0xff));
if len > 1 then Bytes.set s 1 (Char.chr ((i lsr 4) land 0xff));
if len > 2 then Bytes.set s 2 (Char.chr ((i lsr 8) land 0xff));
let s = Bytes.unsafe_to_string s in
let parser_recognizes_as_atom =
match Dune_lang.Parser.parse_string ~fname:"" ~mode:Single s with
| exception _ -> false
| Atom (_, A s') -> s = s'
| _ -> false
in
let printed_as_atom =
match Dune_lang.atom_or_quoted_string s with
| Atom _ -> true
| _ -> false
in
let valid_dune_atom = Dune_lang.Atom.is_valid s in
if valid_dune_atom <> parser_recognizes_as_atom
then (
Printf.eprintf
"Dune_lang.Atom.is_valid error:\n\
- s = %S\n\
- Dune_lang.Atom.is_valid s = %B\n\
- parser_recognizes_as_atom = %B\n"
s
valid_dune_atom
parser_recognizes_as_atom;
exit 1);
if printed_as_atom && not parser_recognizes_as_atom
then (
Printf.eprintf
"Dune_lang.Atom.atom_or_quoted_string error:\n\
- s = %S\n\
- printed_as_atom = %B\n\
- parser_recognizes_as_atom = %B\n"
s
printed_as_atom
parser_recognizes_as_atom;
exit 1)
done
done
;;