I'm using Test::Most and have the following simple test: 

{
  my $fi2 = '';
  $fi2 = FileImporter->new('t/test_data/really_good');

  my %ref_check = (
    _parseable_files => 'ARRAY',
    _nonparseable_files => 'ARRAY',
    _files => 'HASH',
    _bad_header_files => 'ARRAY',
  );
  ref_check($fi2, \%ref_check); # tests are run in the subroutine

}

[download]

The test passes fine when run by itself. However, when I throw another test in front of it which creates a similar object... 

{   ### New test place in front of the earlier test
  my $fi;

  lives_ok { $fi = FileImporter->new('t/test_data/file'); }
    'creates object';

  $fi->DESTROY;
  FileImporter->DESTROY;
}

{     ### Same test as before, now fails with new test in front of it
  my $fi2 = '';
  $fi2 = FileImporter->new('t/test_data/really_good');

  my %ref_check = (
    _parseable_files => 'ARRAY',
    _nonparseable_files => 'ARRAY',
    _files => 'HASH',
    _bad_header_files => 'ARRAY',
  );
  ref_check($fi2, \%ref_check);


}

[download]

...the second test now fails even though it's the same test that ran alone. I traced the problem down to a class subroutine which iterates over file names: 

{
  my $iterator;
  sub _file_iterator {
    my @files = @_;
    my $f = sub {
      shift @files;
    };
    return $f;
  }

  sub get_next_file {
    my $s = shift;

    if (!$s->{_selected_file}) {
      my @files = @_ ? @_ : $s->get_files;
      $iterator = _file_iterator(@files) if !$iterator;
    }
    my $next_file = $iterator->();
    $s->{_selected_file} = $next_file;
    $iterator = '' if !$next_file;
    return $next_file;
  }
}

[download]

Somehow, the iterator is populated with a file name left over from the first test. I'm not sure how or why this is happening. I've placed the tests in two different scopes and given them a different name. I'm assuming there is some kind of voodoo going on under the hood with Test::Most. I'm looking for a way to wipe out my FileImporter class out of memory.

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In reply to How to completely destroy class attributes with Test::Most? by nysus

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