# $Id: 13-listable.t 1247 2010-03-04 15:47:17Z rvos $
use strict;
use Bio::Phylo::Util::CONSTANT 'looks_like_instance';
use Test::More tests => 7;
use Bio::Phylo;
use Bio::Phylo::Taxa;
use Bio::Phylo::Taxa::Taxon;
use Bio::Phylo::Forest;
use Bio::Phylo::Forest::Tree;
use Bio::Phylo::Forest::Node;
ok( my $listable = Bio::Phylo::Listable->new, '1 initialize object' );
my $trees = Bio::Phylo::Forest->new;
my $tree  = Bio::Phylo::Forest::Tree->new;
$trees->insert($tree);
my $taxa  = Bio::Phylo::Taxa->new;
my $taxon = Bio::Phylo::Taxa::Taxon->new;
$taxa->insert($taxon);
eval { $trees->cross_reference($taxa) };
ok( looks_like_instance( $@, 'Bio::Phylo::Util::Exceptions::ObjectMismatch' ),
    '2 bad crossref' );
eval { $taxa->cross_reference($taxa) };
ok( looks_like_instance( $@, 'Bio::Phylo::Util::Exceptions::ObjectMismatch' ),
    '3 bad crossref' );
eval { $taxa->insert($tree) };
ok( looks_like_instance( $@, 'Bio::Phylo::Util::Exceptions::ObjectMismatch' ),
    '4 insert obj bad' );
ok( $trees->first,                 '5 get first tree' );
ok( $trees->last,                  '6 get last tree' );
ok( $tree->cross_reference($taxa), '7 good crossref' );