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Test cases for lbzip2. -*- outline -*-
* Compressor tests
** fib
Check how compressor copes with a Fibonacci word on input. I think that
Fibonacci word is the worst case for some BWT implementations.
** repet
Check how compressor handles very repetitive data (a sequence of alternating
two different characters). This seems to be the worst case for some bzip2
implementations (like ant).
* Decompressor tests
** 32767
Test if decompressor supports blocks with more than 18001 selectors
(in particular 32767 selectors). Some implementations (p7zip, ant)
choke on this.
** ch255
Test how decompressor copes with a `zip bomb'.
** codelen20
Check if decompressor correctly handles 20-bit prefix codes.
** concat
Check whether decompressor supports concatenated bzip2 streams. Some
implementations don't support that (including older versions of the
original bzip2).
** crc1
Determine whether decompressor checks block CRCs. Some old versions
of yambi didn't check them.
** crc2
Determine whether decompressor checks stream CRCs. Pre-2.0 versions
of lbzip2 don't check stream CRC.
** cve
Test if decompressor is vulnerable to CVE-2010-0405 (integer overflow
in BZ2_decompress). Most decompressors based on bzip2-1.0.5 or earlier
are vulnerable.
** empty
Check if decompressor supports empty compressed files.
** gap
Check if decompressor allows a gap consisting of garbage bytes between
bzip2 streams. Pre-2.0 lbzip2 allows that.
** incomp-[12]
Check if cyclic, non-randomized files are supported. See comments in
`incomp' file for more infomation.
** overrun
Check if decompressor correctly rejects blocks that overrun maximal block
size declared in bzip2 header. Pre-2.0 lbzip2 bounded block sizes on a flat
value of 900000, ignoring the information in stream header.
** rand
Check if decompressor supports randomized blocks. Old yambi versions lacked
that. Some implementations (eg. busybox) don't seem to care about
randomized blocks at all.
** trash
Check if decompressor ignores trailing garbage after bzip2 stream.
** void
Check if decompressor treats empty bz2 files as empty streams.
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