Add detection for Redhat and its friends and relations

.github/workflows/redhat.yml

@@ -17,5 +17,5 @@ jobs:
         yes|perl -MCPAN -e 'install Expect'
         export PERL5OPT=-Mlocal::lib
         /usr/local/bin/cpanm --installdeps .
-        perl makefile-expect-driver.pl Linux Unix OSFeatures::POSIXShellRedirection HWCapabilities::Int64
+      perl makefile-expect-driver.pl Linux Unix OSFeatures::POSIXShellRedirection HWCapabilities::Int64 Linux::Redhat Linux::RHEL
         make test

MANIFEST

@@ -153,3 +153,8 @@ lib/Devel/AssertOS/Linux/SUSE.pm
 t/etc-os-release/sles
 t/suse.t
 lib/Devel/AssertOS/Linux/SLES.pm
+lib/Devel/AssertOS/Linux/Centos.pm
+lib/Devel/AssertOS/Linux/Fedora.pm
+lib/Devel/AssertOS/Linux/RHEL.pm
+lib/Devel/AssertOS/Linux/Redhat.pm
+t/redhat.t

lib/Devel/AssertOS/Linux/Centos.pm

@@ -0,0 +1,35 @@
+package Devel::AssertOS::Linux::Centos;
+
+use Devel::CheckOS;
+use strict;
+use warnings;
+
+use Devel::CheckOS::Helpers::LinuxOSrelease 'distributor_id';
+
+no warnings 'redefine';
+
+our $VERSION = '1.0';
+
+sub os_is {
+    my $id = distributor_id;
+
+    Devel::CheckOS::os_is('Linux') &&
+    defined($id) &&
+    $id eq 'centos';
+}
+
+sub expn { "The operating system is some version of Centos" }
+
+Devel::CheckOS::die_unsupported() unless ( os_is() );
+
+=head1 COPYRIGHT and LICENCE
+
+Copyright 2024 David Cantrell
+
+This software is free-as-in-speech software, and may be used, distributed, and modified under the terms of either the GNU General Public Licence version 2 or the Artistic Licence. It's up to you which one you use. The full text of the licences can be found in the files GPL2.txt and ARTISTIC.txt, respectively.
+
+=cut
+
+1;
+
+

lib/Devel/AssertOS/Linux/Fedora.pm

@@ -0,0 +1,35 @@
+package Devel::AssertOS::Linux::Fedora;
+
+use Devel::CheckOS;
+use strict;
+use warnings;
+
+use Devel::CheckOS::Helpers::LinuxOSrelease 'distributor_id';
+
+no warnings 'redefine';
+
+our $VERSION = '1.0';
+
+sub os_is {
+    my $id = distributor_id;
+
+    Devel::CheckOS::os_is('Linux') &&
+    defined($id) &&
+    $id eq 'fedora';
+}
+
+sub expn { "The operating system is some version of Fedora" }
+
+Devel::CheckOS::die_unsupported() unless ( os_is() );
+
+=head1 COPYRIGHT and LICENCE
+
+Copyright 2024 David Cantrell
+
+This software is free-as-in-speech software, and may be used, distributed, and modified under the terms of either the GNU General Public Licence version 2 or the Artistic Licence. It's up to you which one you use. The full text of the licences can be found in the files GPL2.txt and ARTISTIC.txt, respectively.
+
+=cut
+
+1;
+
+

lib/Devel/AssertOS/Linux/RHEL.pm

@@ -0,0 +1,35 @@
+package Devel::AssertOS::Linux::RHEL;
+
+use Devel::CheckOS;
+use strict;
+use warnings;
+
+use Devel::CheckOS::Helpers::LinuxOSrelease 'distributor_id';
+
+no warnings 'redefine';
+
+our $VERSION = '1.0';
+
+sub os_is {
+    my $id = distributor_id;
+
+    Devel::CheckOS::os_is('Linux') &&
+    defined($id) &&
+    $id eq 'rhel';
+}
+
+sub expn { "The operating system is some version of RHEL" }
+
+Devel::CheckOS::die_unsupported() unless ( os_is() );
+
+=head1 COPYRIGHT and LICENCE
+
+Copyright 2024 David Cantrell
+
+This software is free-as-in-speech software, and may be used, distributed, and modified under the terms of either the GNU General Public Licence version 2 or the Artistic Licence. It's up to you which one you use. The full text of the licences can be found in the files GPL2.txt and ARTISTIC.txt, respectively.
+
+=cut
+
+1;
+
+

lib/Devel/AssertOS/Linux/Redhat.pm

@@ -0,0 +1,31 @@
+package Devel::AssertOS::Linux::Redhat;
+
+use Devel::CheckOS;
+use strict;
+use warnings;
+
+use Devel::CheckOS::Helpers::LinuxOSrelease 'distributor_id';
+
+no warnings 'redefine';
+
+our $VERSION = '1.0';
+
+sub matches { map { "Linux::$_" } qw(Centos Fedora RHEL) }
+
+sub os_is { Devel::CheckOS::os_is(matches()) }
+
+sub expn { "The operating system is some derivative of Redhat - which includes RHEL, Centos, and Fedora" }
+
+Devel::CheckOS::die_unsupported() unless ( os_is() );
+
+=head1 COPYRIGHT and LICENCE
+
+Copyright 2024 David Cantrell
+
+This software is free-as-in-speech software, and may be used, distributed, and modified under the terms of either the GNU General Public Licence version 2 or the Artistic Licence. It's up to you which one you use. The full text of the licences can be found in the files GPL2.txt and ARTISTIC.txt, respectively.
+
+=cut
+
+1;
+
+

t/redhat.t

@@ -0,0 +1,27 @@
+use warnings;
+use strict;
+use Test::More;
+use Devel::CheckOS qw(os_is os_isnt);
+use Devel::CheckOS::Helpers::LinuxOSrelease 'distributor_id';
+
+local $^O = 'linux';
+
+Devel::CheckOS::Helpers::LinuxOSrelease::_set_file('t/etc-os-release/rhel');
+ok(os_is('Linux::RHEL'), "detected RHEL");
+ok(os_is('Linux::Redhat'), "... and also as Redhat");
+ok(os_isnt('Linux::Fedora'), "... but not as Fedora");
+ok(os_isnt('Linux::Centos'), "... or Centos");
+
+Devel::CheckOS::Helpers::LinuxOSrelease::_set_file('t/etc-os-release/fedora');
+ok(os_is('Linux::Fedora'), "detected Fedora");
+ok(os_is('Linux::Redhat'), "... and also as Redhat");
+ok(os_isnt('Linux::RHEL'), "... but not as RHEL");
+ok(os_isnt('Linux::Centos'), "... or Centos");
+
+Devel::CheckOS::Helpers::LinuxOSrelease::_set_file('t/etc-os-release/centos');
+ok(os_is('Linux::Centos'), "detected Centos");
+ok(os_is('Linux::Redhat'), "... and also as Redhat");
+ok(os_isnt('Linux::Fedora'), "... but not as Fedora");
+ok(os_isnt('Linux::RHEL'), "... or RHEL");
+
+done_testing;