TAP::Parser::SourceHandler::Perl - Stream TAP from a Perl executable

- NAME
- VERSION
- SYNOPSIS
- DESCRIPTION
- METHODS
  - Class Methods
    - can_handle
    - make_iterator
    - get_taint
    - get_perl
- SUBCLASSING
  - Example
- SEE ALSO

# NAME

TAP::Parser::SourceHandler::Perl - Stream TAP from a Perl executable

# VERSION

Version 3.42

# SYNOPSIS

      use TAP::Parser::Source;
      use TAP::Parser::SourceHandler::Perl;

      my $source = TAP::Parser::Source->new->raw( \'script.pl' );
      $source->assemble_meta;

      my $class = 'TAP::Parser::SourceHandler::Perl';
      my $vote  = $class->can_handle( $source );
      my $iter  = $class->make_iterator( $source );

# DESCRIPTION

This is a Perl TAP::Parser::SourceHandler - it has 2 jobs:

1. Figure out if the TAP::Parser::Source it's given is actually a Perl script ("can_handle").

2. Creates an iterator for Perl sources ("make_iterator").

Unless you're writing a plugin or subclassing TAP::Parser, you probably won't need to use this module directly.

# METHODS

## Class Methods

### `can_handle`

      my $vote = $class->can_handle( $source );

Only votes if $source looks like a file. Casts the following votes:

      0.9  if it has a shebang ala "#!...perl"
      0.75 if it has any shebang
      0.8  if it's a .t file
      0.9  if it's a .pl file
      0.75 if it's in a 't' directory
      0.25 by default (backwards compat)

### `make_iterator`

      my $iterator = $class->make_iterator( $source );

Constructs & returns a new TAP::Parser::Iterator::Process for the source. Assumes `$source->raw` contains a reference to the perl script. `croak`s if the file could not be found.

The command to run is built as follows:

      $perl @switches $perl_script @test_args

The perl command to use is determined by "get_perl". The command generated is guaranteed to preserve:

      PERL5LIB
      PERL5OPT
      Taint Mode, if set in the script's shebang

Note: the command generated will not respect any shebang line defined in your Perl script. This is only a problem if you have compiled a custom version of Perl or if you want to use a specific version of Perl for one test and a different version for another, for example:

      #!/path/to/a/custom_perl --some --args
      #!/usr/local/perl-5.6/bin/perl -w

Currently you need to write a plugin to get around this.

### `get_taint`

Decode any taint switches from a Perl shebang line.

      # $taint will be 't'
      my $taint = TAP::Parser::SourceHandler::Perl->get_taint( '#!/usr/bin/perl -t' );

      # $untaint will be undefined
      my $untaint = TAP::Parser::SourceHandler::Perl->get_taint( '#!/usr/bin/perl' );

### `get_perl`

Gets the version of Perl currently running the test suite.

# SUBCLASSING

Please see "SUBCLASSING" in TAP::Parser for a subclassing overview.

## Example

      package MyPerlSourceHandler;

      use strict;

      use TAP::Parser::SourceHandler::Perl;

      use base 'TAP::Parser::SourceHandler::Perl';

      # use the version of perl from the shebang line in the test file
      sub get_perl {
          my $self = shift;
          if (my $shebang = $self->shebang( $self->{file} )) {
              $shebang =~ /^#!(.*\bperl.*?)(?:(?:\s)|(?:$))/;
              return $1 if $1;
          }
          return $self->SUPER::get_perl(@_);
      }

# SEE ALSO

TAP::Object, TAP::Parser, TAP::Parser::IteratorFactory, TAP::Parser::SourceHandler, TAP::Parser::SourceHandler::Executable, TAP::Parser::SourceHandler::File, TAP::Parser::SourceHandler::Handle, TAP::Parser::SourceHandler::RawTAP

TAP::Parser::SourceHandler::Perl - Stream TAP from a Perl executable