package alcotest

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alcotest
- Alcotest
alcotest.engine
- Alcotest_engine
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alcotest.stdlib_ext
- Alcotest_stdlib_ext
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Alcotest uses Format.std_formatter and Format.err_formatter formatters. However, in a parallel context (OCaml 5 and domains), using these values in parallel can lead to data-races, since these values are not domains-safe. As such, Alcotest offers a way to create your own formatter equivalent in behavior to Format.std_formatter and Format.err_formatter (i.e. they write well on 1 and 2) but they can be used without risk even if another library (such as Logs) uses Format.std_formatter and/or Format.err_formatter and is used in parallel.

type stdout = private Format.formatter

type stderr = private Format.formatter

val set_stdout : stdout -> unit

val set_stderr : stderr -> unit

val get_stdout : unit -> stdout

val get_stderr : unit -> stderr

val ocaml_stdout : stdout

val ocaml_stderr : stderr

val make_stdout : unit -> stdout

val make_stderr : unit -> stderr

val pr : ('a, Format.formatter, unit) format -> 'a

val epr : ('a, Format.formatter, unit) format -> 'a