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Merge pull request #2538 from senhuang42/monotonicity_test

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Add memory monotonicity test over srcSize
This commit is contained in:
sen
2021-03-22 16:54:34 -04:00
committed by GitHub
parent ebc2dfa821 dff4a0e867
commit c48889f097
2 changed files with 52 additions and 2 deletions
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tests/fuzzer.c
+42
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@@ -3181,6 +3181,48 @@ static int basicUnitTests(U32 const seed, double compressibility)
}
DISPLAYLEVEL(3, "OK \n");
DISPLAYLEVEL(3, "test%3i : check compression mem usage monotonicity over levels for estimateCCtxSize() : ", testNb++);
{
int level = 1;
size_t prevSize = 0;
for (; level < ZSTD_maxCLevel(); ++level) {
size_t const currSize = ZSTD_estimateCCtxSize(level);
if (prevSize > currSize) {
DISPLAYLEVEL(3, "Error! previous cctx size: %zu at level: %d is larger than current cctx size: %zu at level: %d",
prevSize, level-1, currSize, level);
goto _output_error;
}
prevSize = currSize;
}
}
DISPLAYLEVEL(3, "OK \n");
DISPLAYLEVEL(3, "test%3i : check estimateCCtxSize() always larger or equal to ZSTD_estimateCCtxSize_usingCParams() : ", testNb++);
{
size_t const kSizeIncrement = 2 KB;
int level = -3;
for (; level <= ZSTD_maxCLevel(); ++level) {
size_t dictSize = 0;
for (; dictSize <= 256 KB; dictSize += 8 * kSizeIncrement) {
size_t srcSize = 2 KB;
for (; srcSize < 300 KB; srcSize += kSizeIncrement) {
ZSTD_compressionParameters const cParams = ZSTD_getCParams(level, srcSize, dictSize);
size_t const cctxSizeUsingCParams = ZSTD_estimateCCtxSize_usingCParams(cParams);
size_t const cctxSizeUsingLevel = ZSTD_estimateCCtxSize(level);
if (cctxSizeUsingLevel < cctxSizeUsingCParams
|| ZSTD_isError(cctxSizeUsingCParams)
|| ZSTD_isError(cctxSizeUsingLevel)) {
DISPLAYLEVEL(3, "error! l: %d dict: %zu srcSize: %zu cctx size cpar: %zu, cctx size level: %zu\n",
level, dictSize, srcSize, cctxSizeUsingCParams, cctxSizeUsingLevel);
goto _output_error;
}
}
}
}
}
DISPLAYLEVEL(3, "OK \n");
#endif
_end: