Test::Stream::Plugin::CanFork - Skip a test file unless the system supports forking
This distribution is deprecated in favor of Test2, Test2::Suite, and Test2::Workflow.
See Test::Stream::Manual::ToTest2 for a conversion guide.
It is fairly common to write tests that need to fork. Not all systems support forking. This library does the hard work of checking if forking is supported on the current system. If forking is not supported then this will skip all tests and exit true.
use Test::Stream::Plugin::CanFork; ... Code that forks ...
or
use Test::Stream::Plugin::CanFork real => 1; ... Code that requires true fork support (not emulated) ...
Checking if the current system supports forking is not simple, here is an example of how to do it:
use Config; sub CAN_FORK { return 1 if $Config{d_fork}; # Some platforms use ithreads to mimick forking return 0 unless $^O eq 'MSWin32' || $^O eq 'NetWare'; return 0 unless $Config{useithreads}; return 0 unless $Config{ccflags} =~ /-DPERL_IMPLICIT_SYS/; # Threads are not reliable before 5.008001 return 0 unless $] >= 5.008001; # 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 fork is dumb. 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.
Skip the test file if the system does not support threads.
Test::Stream::Plugin::CanFork uses Test::Stream under the hood.
The source code repository for Test::Stream can be found at http://github.com/Test-More/Test-Stream/.
Copyright 2015 Chad Granum <exodist7@gmail.com>.
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/
To install Test::Stream, copy and paste the appropriate command in to your terminal.
cpanm
cpanm Test::Stream
CPAN shell
perl -MCPAN -e shell install Test::Stream
For more information on module installation, please visit the detailed CPAN module installation guide.