Test2::Util::UUID - Utils for generating UUIDs under Test2.

       Chad Granum <exodist@cpan.org>

       Copyright 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 v5.40.1                                       2025-03-31                             Test2::Util::UUID(3pm)

       This module provides a consistent UUID source for all of Test2.

       $uuid = gen_uuid()
           Generate a UUID, always normalized to upper case.

       $uuid_or_undef = looks_like_uuid($UUID)
           Checks  if  the  provided  value  looks like a UUID. Make sure it is defined, 36 characters long, has
           dashes, and only contains 0-9 a-f and dash (case insensitive).

           Returns the input value if it looks like a UUID, otherise it returns undef.

       Chad Granum <exodist@cpan.org>

       Test2::Util::UUID - Utils for generating UUIDs under Test2.

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

           use Test2::Util::UUID qw/gen_uuid looks_like_uuid uuid2bin bin2uuid/;

           my $uuid = gen_uuid;

           my $bin = bin2uuid($uuid);

           my $uuid_again = uuid2bin($uuid);

       One of the following modules will be used under the hood, they are listed here in order of preference.

       UUID >= 0.35
           When  possible  this  module will use the UUID cpan module, but it must be version 0.35 or greater to
           avoid a fork related bug. It will generate version 7 UUIDs as they are  most  suitible  for  database
           entry.

       Data::UUID::MT
           Data::UUID::MT  is  the  second  choice  for  UUID  generation.  With this module version 4 UUIDs are
           generated as they are fairly usable in databases.

       UUID::Tiny - slow
           UUID::Tiny is used if the previous 2 are not available. This module is pure perl and  thus  could  be
           slower than the others. Version 4 UUIDs are generated when this module is used.

           A  warning  will  be  issued  with  this  module.  You  can  surpress  the  warning  with  either the
           $TEST2_UUID_NO_WARN environment variable or the "warn => 0" import argument.

       Data::UUID - Not Suitible for Databases
           This is the last resort module. This generates UUIDs fast, but they are of a type/version that is not
           suitible for database keys.

           A warning  will  be  issued  with  this  module.  You  can  surpress  the  warning  with  either  the
           $TEST2_UUID_NO_WARN environment variable or the "warn => 0" import argument.

   CONTROLLINGWARNINGSATIMPORT

           use Test2::Util::UUID 'gen_uuid', warn => 0;

       Passing in "warn => 0" will disable the warnings normally issued when using UUID::Tiny or Data::UUID as a
       backend.

   SELECTINGABACKENDATIMPORT

       If  you  wish to override the order and specify which backend to use you may do so by listing them during
       import prefixed with ':'.

           use Test2::Util::UUID 'gen_uuid', backends => [':UUID', ':UUID::Tiny'];

       The above will try  the  UUID  module  first,  followed  by  the  UUID::Tiny  module.  It  will  not  try
       Data::UUID::MT or Data::UUID.

       Note:  You  must  include  these  import  arguments  anywhere you import this module, otherwise the other
       imports will use the default list, resulting in different places using different UUIDs.

       THE$TEST2_UUID_BACKENDENVVAR

       Setting the $TEST2_UUID_BACKEND env var to one of the backends, or a comma seperated list  will  override
       the default list for all imports. It will NOT override imports that specify their own lists.