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# Test case for HDF5 references
use strict;
use warnings;
use PDL;
use PDL::IO::HDF5;
use Test::More;
my $filename = "reference.hdf5";
# get rid of filename if it already exists
unlink $filename if( -e $filename);
my $hdf5 = new PDL::IO::HDF5($filename);
my $group=$hdf5->group('group1');
# Store a dataset
my $dataset=$hdf5->dataset('data1');
my $data = pdl [ 2.0, 3.0, 4.0, 5.0, 6.0, 7.0, 8.0, 9.0, 10.0, 11.0, 12.0 ];
$dataset->set($data, unlimited => 1);
# create the reference
my @regionStart = ( 3 );
my @regionCount = ( 3 );
$hdf5->reference($dataset,"myRef",\@regionStart,\@regionCount);
my $expected = 'data1, myRef';
my @datasets1=$hdf5->datasets();
is(join(', ',@datasets1), $expected);
# dereference the dataset
my $ref = $hdf5->dataset("myRef");
my $dereferenced = $ref->get();
$expected = '[5 6 7]';
is("$dereferenced", $expected);
# clean up file
unlink $filename if( -e $filename);
done_testing;
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