(* Js_of_ocaml tests
 * http://www.ocsigen.org/js_of_ocaml/
 * Copyright (C) 2010 Jérôme Vouillon
 * Laboratoire PPS - CNRS Université Paris Diderot
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
 *)

open Js_of_ocaml

let%expect_test _ =
  let re1 = Regexp.regexp "ab?" in
  let re2 = Regexp.regexp "\\." in
  let re3 = Regexp.regexp_string "(.)\\(.)" in
  let s1 = "totobtutua" in
  let s2 = "rr.ee.ab.a.b.bb.a.ee." in
  (match Regexp.string_match re1 s1 0 with
  | None -> print_endline "Can't match 1 1"
  | Some r ->
      let x = Regexp.matched_string r in
      if x = "a" then () else print_endline ("Wrong match 1 1: " ^ x));
  [%expect {||}];
  (match Regexp.string_match re1 s2 0 with
  | None -> print_endline "Can't match 1 2"
  | Some r ->
      let x = Regexp.matched_string r in
      if x = "ab" then () else print_endline ("Wrong match 1 2: " ^ x));
  [%expect {||}];
  (let l = Regexp.split re2 s2 in
   if l = [ "rr"; "ee"; "ab"; "a"; "b"; "bb"; "a"; "ee"; "" ]
   then ()
   else print_endline "Wrong split 2 2");
  [%expect {||}];
  (let x = Regexp.global_replace re2 s2 "" in
   if x = "rreeababbbaee" then () else print_endline ("Wrong replacement 2 2: " ^ x));
  [%expect {||}];
  (match Regexp.string_match re3 "(.)\\(.)" 0 with
  | None -> print_endline "Quote 3 3"
  | Some _ -> ());
  [%expect {||}]

(* [replace_first] must keep every flag of the regexp except [g]. Here the
   [s] (dotAll) flag lets [.] match the newline; dropping it would leave the
   string unchanged. *)
let%expect_test "replace_first preserves non-g flags" =
  let re = Regexp.regexp_with_flag "a.b" "s" in
  Printf.printf "%S\n" (Regexp.replace_first re "a\nb" "X");
  [%expect {| "X" |}]
