# Module OUnit2.Conf

    module Conf: sig .. end

Define command line options, environment variables and file configuration.

This module helps to define configuration options that are translated to command line options et al.

The name defined for the variable is:

- should be a valid OCaml identifier
- kept as is for use in configuration file. (foo_bar = "")
- '_' are replaced by '-' and a leading '-' is added for command line (-foo "")
- capitalized and prefixed by OUNIT_ for environment (OUNIT_FOO_BAR="")

    type 'a conf_t = string -> 'a -> Arg.doc -> OUnit2.test_ctxt -> 'a

The default type of function that create a configuration option of type 'a.

    val make_string : string conf_t

`make_string name default help` Create a string configuration option with default value `default` and a short help string. The result of the partial application of the function can be used inside tests to be evaluated to a value.

    let my_option = Conf.make_string "my_option" "the default" "A default option."

    let tests =

      "ATest" >::

      (fun test_ctxt -> let option_value = my_option test_ctxt in ())

    val make_string_opt : string option conf_t

Create a `string option` configuration option. See `!make_string`.

    val make_int : int conf_t

Create an `int` configuration option. See `!make_string`.

    val make_float : float conf_t

Create a `float` configuration option. See `!make_string`.

    val make_bool : bool conf_t

Create a `bool` configuration option. See `!make_string`.

    val make_exec : string -> OUnit2.test_ctxt -> string

`make_exec execname` Create a option to define an executable.