015-no_return.t

#! perl
# Copyright (C) 2007,2014, Parrot Foundation.
# 015-no_return.t

use strict;
use warnings;

use Test::More tests => 12;
use Carp;
use lib qw( lib t/configure/testlib );
use Parrot::Configure;
use Parrot::Configure::Options qw( process_options );
use Parrot::Configure::Utils qw( capture );

$| = 1;
is( $|, 1, "output autoflush is set" );

my ($args, $step_list_ref) = process_options(
    {
        argv => [],
        mode => q{configure},
    }
);
ok( defined $args, "process_options returned successfully" );
my %args = %$args;

my $conf = Parrot::Configure->new;
ok( defined $conf, "Parrot::Configure->new() returned okay" );

my $step        = q{init::epsilon};
my $description = 'Determining if your computer does epsilon';

$conf->add_steps($step);
my @confsteps = @{ $conf->steps };
isnt( scalar @confsteps, 0,
    "Parrot::Configure object 'steps' key holds non-empty array reference" );
is( scalar @confsteps, 1, "Parrot::Configure object 'steps' key holds ref to 1-element array" );
my $nontaskcount = 0;
foreach my $k (@confsteps) {
    $nontaskcount++ unless $k->isa("Parrot::Configure::Task");
}
is( $nontaskcount, 0, "Each step is a Parrot::Configure::Task object" );
is( $confsteps[0]->step, $step, "'step' element of Parrot::Configure::Task struct identified" );
ok( !ref( $confsteps[0]->object ),
    "'object' element of Parrot::Configure::Task struct is not yet a ref" );

$conf->options->set(%args);

{
    my $rv;
    my $stdout;
    capture ( sub {$rv = $conf->runsteps}, \$stdout );
    ok( $rv, "runsteps successfully ran $step" );
    like( $stdout, qr/$description/s, "Got correct description for $step" );
    like( $stdout, qr/done\.\z/,      "got 'done' in lieu of result set by step" );
}

pass("Completed all tests in $0");

################### DOCUMENTATION ###################

=head1 NAME

015-no_return.t - see what happens when configuration step implicitly returns
true value but does not set a result

=head1 SYNOPSIS

    % prove t/configure/015-no_return.t

=head1 DESCRIPTION

The files in this directory test functionality used by F<Configure.pl>.

The tests in this file examine what happens when your configuration step
module fails to return the object and does not have an explicit C<return>.

=head1 AUTHOR

James E Keenan

=head1 SEE ALSO

Parrot::Configure, F<Configure.pl>.

=cut

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