Source file oUnitCheckEnv.ml

(**************************************************************************)
(* The OUnit library                                                      *)
(*                                                                        *)
(* Copyright (C) 2002-2008 Maas-Maarten Zeeman.                           *)
(* Copyright (C) 2010 OCamlCore SARL                                      *)
(* Copyright (C) 2013 Sylvain Le Gall                                     *)
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(* and Sylvain Le Gall.                                                   *)
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(* Check environment after and before tests, to check isolation. *)

open OUnitTest
open OUnitAssert

type t =
  {
    pwd: string;
    env: string array;
  }

let create () =
  {
    pwd = Sys.getcwd ();
    env = Unix.environment ();
  }

module EnvElement =
struct
  type t = string

  let pp_printer = Format.pp_print_string

  let compare = String.compare

  let pp_print_sep = OUnitDiff.pp_comma_separator
end

module SetEnv = OUnitDiff.SetMake(EnvElement)

let check test_ctxt t =
  let t' = create () in
    List.iter
      (fun f -> non_fatal test_ctxt (fun _ -> f ()))
      [
        (fun () ->
           assert_equal
             ~msg:"Current working dir (check env)."
             ~printer:(fun s -> s)
             t.pwd
             t'.pwd);
        (fun () ->
           let convert t = SetEnv.of_list (Array.to_list t.env) in
             SetEnv.assert_equal
               ~msg:"Environment (check env)."
               (convert t)
               (convert t'));
      ]