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(* Open Source License                                                       *)
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let range n = List.init n Fun.id

let test_roundtrip len () =
  let open Data_encoding in
  let encoding = Fixed.list len int31 in
  let data = range len in
  assert (List.length data = len) ;
  let blob = Data_encoding.Binary.to_string_exn encoding data in
  let data_out = Data_encoding.Binary.of_string_exn encoding blob in
  assert (List.compare_lengths data data_out = 0) ;
  assert (List.for_all2 Int.equal data data_out)

let test_invalid_argument () =
  (match Data_encoding.Fixed.list 0 Data_encoding.int31 with
  | _ -> assert false
  | exception Invalid_argument _ -> ()) ;
  (match Data_encoding.Fixed.list (-1) Data_encoding.int31 with
  | _ -> assert false
  | exception Invalid_argument _ -> ()) ;
  (match Data_encoding.(Fixed.list 1 (Variable.array int31)) with
  | _ -> assert false
  | exception Invalid_argument _ -> ()) ;
  (match Data_encoding.Fixed.list 1 Data_encoding.unit with
  | _ -> assert false
  | exception Invalid_argument _ -> ()) ;
  (match
     Data_encoding.(Fixed.list 1 (obj1 (opt "zeroable" (Variable.array int31))))
   with
  | _ -> assert false
  | exception Invalid_argument _ -> ()) ;
  ()

let test_list_too_long len () =
  let open Data_encoding in
  let encoding = Fixed.list len int31 in
  let encodinglong = Fixed.list (len + 1) int31 in
  let encodingshort = Fixed.list (len - 1) int31 in
  let data = range len in
  assert (List.length data = len) ;
  (match Data_encoding.Binary.to_string_exn encodinglong data with
  | _ -> assert false
  | exception Data_encoding.Binary.Write_error List_invalid_length -> ()) ;
  (match Data_encoding.Binary.to_string_exn encodingshort data with
  | _ -> assert false
  | exception Data_encoding.Binary.Write_error List_invalid_length -> ()) ;
  let blob = Data_encoding.Binary.to_string_exn encoding data in
  (match Data_encoding.Binary.of_string_exn encodinglong blob with
  | _ -> assert false
  | exception Data_encoding.Binary.Read_error Not_enough_data -> ()) ;
  (match Data_encoding.Binary.of_string_exn encodingshort blob with
  | _ -> assert false
  | exception Data_encoding.Binary.Read_error Extra_bytes -> ()) ;
  ()

let tests =
  [
    ("roundtrip1", `Quick, test_roundtrip 1);
    ("roundtrip2", `Quick, test_roundtrip 2);
    ("roundtrip19", `Quick, test_roundtrip 19);
    ("roundtrip1232", `Quick, test_roundtrip 1232);
    ("invalid_arg", `Quick, test_invalid_argument);
    ("too-long 10", `Quick, test_list_too_long 10);
    ("too-long 120", `Quick, test_list_too_long 120);
  ]