NAME

       Test2::Tools::Subtest - Tools for writing subtests

DESCRIPTION

       This package exports subs that let you write subtests.

       There are two types of subtests, buffered and streamed. Streamed subtests mimic subtests
       from Test::More in that they render all events as soon as they are produced. Buffered
       subtests wait until the subtest completes before rendering any results.

       The main difference is that streamed subtests are unreadable when combined with
       concurrency. Buffered subtests look fine with any number of concurrent threads and
       processes.

SYNOPSIS

   BUFFERED
           use Test2::Tools::Subtest qw/subtest_buffered/;

           subtest_buffered my_test => sub {
               ok(1, "subtest event A");
               ok(1, "subtest event B");
           };

       This will produce output like this:

           ok 1 - my_test {
               ok 1 - subtest event A
               ok 2 - subtest event B
               1..2
           }

   STREAMED
       The default option is 'buffered'. If you want streamed subtests, the way Test::Builder
       does it, use this:

           use Test2::Tools::Subtest qw/subtest_streamed/;

           subtest_streamed my_test => sub {
               ok(1, "subtest event A");
               ok(1, "subtest event B");
           };

       This will produce output like this:

           # Subtest: my_test
               ok 1 - subtest event A
               ok 2 - subtest event B
               1..2
           ok 1 - Subtest: my_test

IMPORTANT NOTE

       You can use "bail_out" or "skip_all" in a subtest, but not in a BEGIN block or "use"
       statement. This is due to the way flow control works within a BEGIN block. This is not
       normally an issue, but can happen in rare conditions using eval, or script files as
       subtests.

EXPORTS

       subtest_streamed $name => $sub
       subtest_streamed($name, $sub, @args)
       subtest_streamed $name => \%params, $sub
       subtest_streamed($name, \%params, $sub, @args)
           Run subtest coderef, stream events as they happen.

           "\%params" is a hashref with any arguments you wish to pass into hub construction.

       subtest_buffered $name => $sub
       subtest_buffered($name, $sub, @args)
       subtest_buffered $name => \%params, $sub
       subtest_buffered($name, \%params, $sub, @args)
           Run subtest coderef, render events all at once when subtest is complete.

           "\%params" is a hashref with any arguments you wish to pass into hub construction.

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 2017 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/