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Add size-hint to fuzz tests

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This commit is contained in:
Nick Magerko 2019-08-19 15:12:24 -07:00
parent 09894dc2eb
commit ea9d35922c
2 changed files with 19 additions and 0 deletions
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3
tests/fuzz/zstd_helpers.c
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@ -90,6 +90,9 @@ void FUZZ_setRandomParameters(ZSTD_CCtx *cctx, size_t srcSize, uint32_t *state)
setRand(cctx, ZSTD_c_forceMaxWindow, 0, 1, state);
setRand(cctx, ZSTD_c_literalCompressionMode, 0, 2, state);
setRand(cctx, ZSTD_c_forceAttachDict, 0, 2, state);
if (FUZZ_rand32(state, 0, 1) == 0) {
setRand(cctx, ZSTD_c_srcSizeHint, 0, 2 * srcSize, state);
}
}
FUZZ_dict_t FUZZ_train(void const* src, size_t srcSize, uint32_t *state)

16
tests/zstreamtest.c
View File

@ -1151,6 +1151,21 @@ static int basicUnitTests(U32 seed, double compressibility)
}
DISPLAYLEVEL(3, "OK \n");
DISPLAYLEVEL(3, "test%3i : ZSTD_c_srcSizeHint provides hint about size of stream : ", testNb++);
{
CHECK_Z( ZSTD_initCStream(zc, 1 /* cLevel */) );
outBuff.dst = (char*)(compressedBuffer);
outBuff.size = compressedBufferSize;
outBuff.pos = 0;
inBuff.src = CNBuffer;
inBuff.size = CNBufferSize;
inBuff.pos = 0;
CHECK_Z( ZSTD_compressStream(zc, &outBuff, &inBuff) );
if (inBuff.pos != inBuff.size) goto _output_error; /* entire input should be consumed */
{ size_t const r = ZSTD_endStream(zc, &outBuff);
if (r != 0) goto _output_error; } /* error, or some data not flushed */
}
/* Overlen overwriting window data bug */
DISPLAYLEVEL(3, "test%3i : wildcopy doesn't overwrite potential match data : ", testNb++);
{ /* This test has a window size of 1024 bytes and consists of 3 blocks:
@ -2106,6 +2121,7 @@ static int fuzzerTests_newAPI(U32 seed, int nbTests, int startTest,
if (FUZ_rand(&lseed) & 3) CHECK_Z( setCCtxParameter(zc, cctxParams, ZSTD_c_ldmMinMatch, FUZ_randomClampedLength(&lseed, ZSTD_LDM_MINMATCH_MIN, ZSTD_LDM_MINMATCH_MAX), opaqueAPI) );
if (FUZ_rand(&lseed) & 3) CHECK_Z( setCCtxParameter(zc, cctxParams, ZSTD_c_ldmBucketSizeLog, FUZ_randomClampedLength(&lseed, ZSTD_LDM_BUCKETSIZELOG_MIN, ZSTD_LDM_BUCKETSIZELOG_MAX), opaqueAPI) );
if (FUZ_rand(&lseed) & 3) CHECK_Z( setCCtxParameter(zc, cctxParams, ZSTD_c_ldmHashRateLog, FUZ_randomClampedLength(&lseed, ZSTD_LDM_HASHRATELOG_MIN, ZSTD_LDM_HASHRATELOG_MAX), opaqueAPI) );
if (FUZ_rand(&lseed) & 3) CHECK_Z( setCCtxParameter(zc, cctxParams, ZSTD_c_srcSizeHint, FUZ_randomClampedLength(&lseed, 0, ZSTD_ZSTD_SRCSIZEHINT_MAX), opaqueAPI) );
}
/* mess with frame parameters */