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[zstreamtest] Add failing test case

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This commit is contained in:
Nick Terrell 2018-09-28 12:09:14 -07:00
parent e06f91a169
commit 146049a1ea
1 changed files with 39 additions and 0 deletions
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39
tests/zstreamtest.c
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@ -1073,6 +1073,45 @@ static int basicUnitTests(U32 seed, double compressibility)
}
DISPLAYLEVEL(3, "OK \n");
DISPLAYLEVEL(3, "test%3i : dictionary + small blocks + 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);
ZSTD_outBuffer out = {compressedBuffer, compressedBufferSize, 0};
int remainingInput = 256 * 1024;
ZSTD_CCtx_reset(zc);
CHECK_Z(ZSTD_CCtx_resetParameters(zc));
CHECK_Z(ZSTD_CCtx_refCDict(zc, cdict));
CHECK_Z(ZSTD_CCtx_setParameter(zc, ZSTD_p_checksumFlag, 1));
/* Write a bunch of 6 byte blocks */
while (remainingInput > 0) {
const size_t kSmallBlockSize = 6;
char testBuffer[kSmallBlockSize] = "\xAA\xAA\xAA\xAA\xAA\xAA";
const size_t outStart = out.pos;
ZSTD_inBuffer in = {testBuffer, kSmallBlockSize, 0};
CHECK_Z(ZSTD_compress_generic(zc, &out, &in, ZSTD_e_flush));
CHECK(in.pos != in.size, "input not fully consumed");
remainingInput -= kSmallBlockSize;
}
/* Write several very long offset matches into the dictionary */
for (int offset = 1024; offset >= 0; offset -= 128) {
size_t start = out.pos;
ZSTD_inBuffer in = {dictionary.start + offset, 128, 0};
ZSTD_EndDirective flush = offset > 0 ? ZSTD_e_continue : ZSTD_e_end;
CHECK_Z(ZSTD_compress_generic(zc, &out, &in, flush));
CHECK(in.pos != in.size, "input not fully consumed");
}
/* Ensure decompression works */
CHECK_Z(ZSTD_decompress_usingDict(zd, decodedBuffer, CNBufferSize, out.dst, out.pos, dictionary.start, dictionary.filled));
ZSTD_freeCDict(cdict);
}
DISPLAYLEVEL(3, "OK \n");
_end:
FUZ_freeDictionary(dictionary);
ZSTD_freeCStream(zc);