I was thrilled to learn that Compress::Bzip2 existed on CPAN. However, I was less than thrilled by the test script. So I wrote my own.

0: #! /usr/bin/env perl
1: #
2: # test script for Compress::Bzip2
3: # david landgren 26-feb-2001
4:
5: use Compress::Bzip2;
6:
7: print "1..3\n";
8:
9: my( $source, $target, $verify );
10:
11: $source = '';
12: $target = Compress::Bzip2::compress( $source );
13: $verify = Compress::Bzip2::decompress( $target );
14:
15: print 'not ' if $verify ne $source;
16: print "ok 1\n";
17:
18: $source = 'x' x 10000;
19: $target = Compress::Bzip2::compress( $source );
20: $verify = Compress::Bzip2::decompress( $target );
21:
22: print 'not ' if $verify ne $source;
23: print "ok 2\n";
24:
25: $source = do {
26:     $/ = undef;
27:     my $input = shift || $0;
28:     if( open IN, $input ) {
29:             my $slurp = <IN>;
30:             close IN;
31:             $slurp;
32:     }
33:     else {
34:             '';
35:     }
36: };
37:
38: if( !$source ) {
39:     print 'not ';
40: }
41: else {
42:     $target = Compress::Bzip2::compress( $source );
43:     $verify = Compress::Bzip2::decompress( $target );
44:     print 'not ' if $verify ne $source;
45: }
46: print "ok 3\n";
47: __END__
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I've mailed the test to the author, but in the meantime if you want to use this wonderful compressor directly from Perl, with this script you'll know if it works correctly on your platform.