Test2::Require::Threads(3perl)                Perl Programmers Reference Guide


NAME
       Test2::Require::Threads - Skip a test file unless the system supports
       threading

DESCRIPTION
       It is fairly common to write tests that need to use threads. Not all
       systems support threads. This library does the hard work of checking if
       threading is supported on the current system. If threading is not
       supported then this will skip all tests and exit true.

SYNOPSIS
           use Test2::Require::Threads;

           ... Code that uses threads ...

EXPLANATION
       Checking if the current system supports threading is not simple, here
       is an example of how to do it:

           use Config;

           sub CAN_THREAD {
               # Threads are not reliable before 5.008001
               return 0 unless $] >= 5.008001;
               return 0 unless $Config{'useithreads'};

               # Devel::Cover currently breaks with threads
               return 0 if $INC{'Devel/Cover.pm'};
               return 1;
           }

       Duplicating this non-trivial code in all tests that need to use threads
       is error-prone. It is easy to forget bits, or get it wrong. On top of
       these checks you also need to tell the harness that no tests should run
       and why.

SEE ALSO
       Test2::Require::CanFork
           Skip the test file if the system does not support forking.

       Test2
           Test2::Require::Threads uses Test2 under the hood.

SOURCE
       The source code repository for Test2-Suite can be found at
       https://github.com/Test-More/Test2-Suite/.

MAINTAINERS
       Chad Granum <exodist@cpan.org>

AUTHORS
       Chad Granum <exodist@cpan.org>

COPYRIGHT
       Copyright 2018 Chad Granum <exodist@cpan.org>.

       This program is free software; you can redistribute it and/or modify it
       under the same terms as Perl itself.

       See http://dev.perl.org/licenses/

perl v5.40.0                      2024-09-01    Test2::Require::Threads(3perl)