Test2::Util::Facets2Legacy - Convert facet data to the legacy event API.

- NAME
- DESCRIPTION
- SYNOPSIS
  - AS METHODS
  - AS FUNCTIONS
- NOTE ON CYCLES
- EXPORTS
- SOURCE
- MAINTAINERS
- AUTHORS
- COPYRIGHT

# NAME

Test2::Util::Facets2Legacy - Convert facet data to the legacy event API.

# DESCRIPTION

This module exports several subroutines from the older event API (see Test2::Event). These subroutines can be used as methods on any object that provides a custom `facet_data()` method. These subroutines can also be used as functions that take a facet data hashref as arguments.

# SYNOPSIS

## AS METHODS

        package My::Event;

        use Test2::Util::Facets2Legacy ':ALL';

        sub facet_data { return { ... } }

Then to use it:

        my $e = My::Event->new(...);

        my $causes_fail = $e->causes_fail;
        my $summary     = $e->summary;
        ....

## AS FUNCTIONS

        use Test2::Util::Facets2Legacy ':ALL';

        my $f = {
            assert => { ... },
            info => [{...}, ...],
            control => {...},
            ...
        };

        my $causes_fail = causes_fail($f);
        my $summary     = summary($f);

# NOTE ON CYCLES

When used as methods, all these subroutines call `$e->facet_data()`. The default `facet_data()` method in Test2::Event relies on the legacy methods this module emulates in order to work. As a result of this it is very easy to create infinite recursion bugs.

These methods have cycle detection and will throw an exception early if a cycle is detected. `uuid()` is currently the only subroutine in this library that has a fallback behavior when cycles are detected.

# EXPORTS

Nothing is exported by default. You must specify which methods to import, or use the ':ALL' tag.

$bool = $e->causes_fail()
$bool = causes_fail($f)

  Check if the event or facets result in a failing state.

$bool = $e->diagnostics()
$bool = diagnostics($f)

  Check if the event or facets contain any diagnostics information.

$bool = $e->global()
$bool = global($f)

  Check if the event or facets need to be globally processed.

$bool = $e->increments_count()
$bool = increments_count($f)

  Check if the event or facets make an assertion.

$bool = $e->no_display()
$bool = no_display($f)

  Check if the event or facets should be rendered or hidden.

($max, $directive, $reason) = $e->sets_plan()
($max, $directive, $reason) = sets_plan($f)

  Check if the event or facets set a plan, and return the plan details.

$id = $e->subtest_id()
$id = subtest_id($f)

  Get the subtest id, if any.

$string = $e->summary()
$string = summary($f)

  Get the summary of the event or facets hash, if any.

$undef_or_int = $e->terminate()
$undef_or_int = terminate($f)

  Check if the event or facets should result in process termination, if so the exit code is returned (which could be 0). undef is returned if no termination is requested.

$uuid = $e->uuid()
$uuid = uuid($f)

  Get the UUID of the facets or event.

  Note: This will fall back to `$e->SUPER::uuid()` if a cycle is detected and an event is used as the argument.

# SOURCE

The source code repository for Test2 can be found at http://github.com/Test-More/test-more/.

# MAINTAINERS

Chad Granum <exodist@cpan.org>

# AUTHORS

Chad Granum <exodist@cpan.org>

# COPYRIGHT

Copyright 2018 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/

Test2::Util::Facets2Legacy - Convert facet data to the legacy event API.