#! perl
# Copyright (C) 2007, Parrot Foundation.
# $Id: 005-run_one_step.t 36833 2009-02-17 20:09:26Z allison $
# 005-run_one_step.t

use strict;
use warnings;

use Test::More tests => 21;
use Carp;
use lib qw( lib t/configure/testlib );
use Parrot::Configure;
use Parrot::Configure::Options qw( process_options );
use IO::CaptureOutput 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 $newconf = Parrot::Configure->new;
ok( defined $newconf, "Parrot::Configure->new() returned okay" );
is( $conf, $newconf, "Parrot::Configure object is a singleton" );

# Since these tests peek into the Parrot::Configure object, they will break if
# the structure of that object changes.  We retain them for now to delineate
# our progress in testing the object.
foreach my $k (qw| steps options data |) {
    ok( defined $conf->$k, "Parrot::Configure object has $k key" );
}
is( ref( $conf->steps ), q{ARRAY}, "Parrot::Configure object 'steps' key is array reference" );
is( scalar @{ $conf->steps },
    0, "Parrot::Configure object 'steps' key holds empty array reference" );
foreach my $k (qw| options data |) {
    isa_ok( $conf->$k, "Parrot::Configure::Data" );
}

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

$conf->add_steps($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);
is( $conf->options->{c}->{debugging},
    1, "command-line option '--debugging' has been stored in object" );

{
    my $rv ;
    my ($stdout, $stderr);
    capture( sub {$rv = $conf->runsteps }, \$stdout, \$stderr );
    ok( $rv, "runsteps successfully ran $step" );
    like( $stdout, qr/$description/, "Got message expected upon running $step" );
}

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

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

=head1 NAME

005-run_one_step.t - test Parrot::Configure by running one step

=head1 SYNOPSIS

    % prove t/configure/005-run_one_step.t

=head1 DESCRIPTION

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

The tests in this file test those Parrot::Configure methods regularly called
by F<Configure.pl> up to C<Parrot::Configure::runsteps()> but providing only
one step instead of the regular full set.

=head1 AUTHOR

James E Keenan

=head1 SEE ALSO

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

=cut

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