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negative compression level test

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compare results from simple and advanced AIP
This commit is contained in:
Yann Collet
2018-06-07 14:46:55 -07:00
parent b27c7389e3
commit 43a5697b24
1 changed files with 25 additions and 1 deletions
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26
tests/fuzzer.c
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@ -1080,12 +1080,36 @@ static int basicUnitTests(U32 seed, double compressibility)
ZSTD_freeCCtx(cctx); ZSTD_freeCCtx(cctx);
} }
/* negative compression level test : ensure simple API and advanced API produce same result */
DISPLAYLEVEL(3, "test%3i : negative compression level : ", testNb++);
{ size_t const srcSize = CNBuffSize / 5;
int const compressionLevel = -2;
size_t const cSize_1pass = ZSTD_compress(compressedBuffer, compressedBufferSize,
CNBuffer, srcSize,
compressionLevel);
if (ZSTD_isError(cSize_1pass)) goto _output_error;
{ ZSTD_CCtx* const cctx = ZSTD_createCCtx();
assert(cctx != NULL);
CHECK( ZSTD_CCtx_setParameter(cctx, ZSTD_p_compressionLevel, compressionLevel) );
{ ZSTD_inBuffer in = { CNBuffer, srcSize, 0 };
ZSTD_outBuffer out = { compressedBuffer, compressedBufferSize, 0 };
size_t const compressionResult = ZSTD_compress_generic(cctx, &out, &in, ZSTD_e_end);
DISPLAYLEVEL(5, "simple=%zu vs %zu=advanced : ", cSize_1pass, out.pos);
if (ZSTD_isError(compressionResult)) goto _output_error;
if (out.pos != cSize_1pass) goto _output_error;
}
ZSTD_freeCCtx(cctx);
}
}
DISPLAYLEVEL(3, "OK \n");
/* parameters order test */ /* parameters order test */
{ size_t const inputSize = CNBuffSize / 2; { size_t const inputSize = CNBuffSize / 2;
U64 xxh64; U64 xxh64;
{ ZSTD_CCtx* cctx = ZSTD_createCCtx(); { ZSTD_CCtx* const cctx = ZSTD_createCCtx();
DISPLAYLEVEL(3, "test%3i : parameters in order : ", testNb++); DISPLAYLEVEL(3, "test%3i : parameters in order : ", testNb++);
assert(cctx != NULL);
CHECK( ZSTD_CCtx_setParameter(cctx, ZSTD_p_compressionLevel, 2) ); CHECK( ZSTD_CCtx_setParameter(cctx, ZSTD_p_compressionLevel, 2) );
CHECK( ZSTD_CCtx_setParameter(cctx, ZSTD_p_enableLongDistanceMatching, 1) ); CHECK( ZSTD_CCtx_setParameter(cctx, ZSTD_p_enableLongDistanceMatching, 1) );
CHECK( ZSTD_CCtx_setParameter(cctx, ZSTD_p_windowLog, 18) ); CHECK( ZSTD_CCtx_setParameter(cctx, ZSTD_p_windowLog, 18) );