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Add Failing Test

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W. Felix Handte 2018-08-24 14:30:21 -07:00
parent 1af27a7ed7
commit db4c8d05b3
1 changed files with 53 additions and 0 deletions
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53
tests/zstreamtest.c
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@ -1020,6 +1020,59 @@ static int basicUnitTests(U32 seed, double compressibility)
}
DISPLAYLEVEL(3, "OK \n");
DISPLAYLEVEL(3, "test%3i : dictionary + uncompressible block + reusing tables checks offset table validity: ", testNb++);
{ ZSTD_CDict* const cdict = ZSTD_createCDict_advanced(
dictionary.start, dictionary.filled,
ZSTD_dlm_byRef, ZSTD_dct_fullDict,
ZSTD_getCParams(3, 0, dictionary.filled),
ZSTD_defaultCMem);
const size_t inbufsize = 2 * 128 * 1024; /* 2 blocks */
const size_t outbufsize = ZSTD_compressBound(inbufsize);
size_t inbufpos = 0;
size_t cursegmentlen;
BYTE *inbuf = (BYTE *)malloc(inbufsize);
BYTE *outbuf = (BYTE *)malloc(outbufsize);
BYTE *checkbuf = (BYTE *)malloc(inbufsize);
size_t ret;
CHECK(cdict == NULL, "failed to alloc cdict");
CHECK(inbuf == NULL, "failed to alloc input buffer");
/* first block is uncompressible */
cursegmentlen = 128 * 1024;
RDG_genBuffer(inbuf + inbufpos, cursegmentlen, 0., 0., seed);
inbufpos += cursegmentlen;
/* second block is compressible */
cursegmentlen = 128 * 1024 - 256;
RDG_genBuffer(inbuf + inbufpos, cursegmentlen, 0.05, 0., seed);
inbufpos += cursegmentlen;
/* and includes a very long backref */
cursegmentlen = 128;
memcpy(inbuf + inbufpos, dictionary.start + 256, cursegmentlen);
inbufpos += cursegmentlen;
/* and includes a very long backref */
cursegmentlen = 128;
memcpy(inbuf + inbufpos, dictionary.start + 128, cursegmentlen);
inbufpos += cursegmentlen;
ret = ZSTD_compress_usingCDict(zc, outbuf, outbufsize, inbuf, inbufpos, cdict);
CHECK_Z(ret);
ret = ZSTD_decompress_usingDict(zd, checkbuf, inbufsize, outbuf, ret, dictionary.start, dictionary.filled);
CHECK_Z(ret);
CHECK(memcmp(inbuf, checkbuf, inbufpos), "start and finish buffers don't match");
ZSTD_freeCDict(cdict);
free(inbuf);
free(outbuf);
free(checkbuf);
}
DISPLAYLEVEL(3, "OK \n");
_end:
FUZ_freeDictionary(dictionary);
ZSTD_freeCStream(zc);