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Manual Reference Pages  -  TEST2::TOOLS::SUBTEST (3)

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NAME

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

CONTENTS

DESCRIPTION

This package exports subs that let you write subtests.

There are 2 types of subtests, buffered and streamed. Streamed subtests mimick subtest 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’, use this if you want streamed, the way Test::Builder does it.



    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 http://github.com/Test-More/Test2-Suite/.

MAINTAINERS

Chad Granum <exodist@cpan.org>

AUTHORS

Chad Granum <exodist@cpan.org>

COPYRIGHT

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/

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perl v5.20.3 TEST2::TOOLS::SUBTEST (3) 2016-03-20

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