Test2::Require::Fork − Skip a test file unless the system supports forking
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
Test2::Require::Fork;
... Code that forks ...
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 mimic forking
return 0 unless $ˆO eq 'MSWin32' || $ˆO 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 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.
Test2::Require::CanReallyfork
Similar to this module, but will skip on any perl that only has fork emulation.
Test2::Require::CanThread
Skip the test file if the system does not support threads.
The source code repository for Test2−Suite can be found at https://github.com/Test−More/Test2−Suite/.
Chad Granum <[email protected]>
Chad Granum <[email protected]>
Copyright 2018 Chad Granum <[email protected]>.
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/