diff options
Diffstat (limited to 'tests/fuzzer.c')
| -rw-r--r-- | tests/fuzzer.c | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/tests/fuzzer.c b/tests/fuzzer.c index e6fa13c..07d63a2 100644 --- a/tests/fuzzer.c +++ b/tests/fuzzer.c @@ -630,6 +630,46 @@ static int FUZ_test(U32 seed, U32 nbCycles, const U32 startCycle, const double c FUZ_CHECKTEST(memcmp(block, decodedBuffer, (size_t)targetSize), "LZ4_decompress_safe_partial: corruption detected in regenerated data"); } + /* Partial decompression using dictionary. */ + FUZ_DISPLAYTEST("test LZ4_decompress_safe_partial_usingDict using no dict"); + { size_t const missingOutBytes = FUZ_rand(&randState) % (unsigned)blockSize; + int const targetSize = (int)((size_t)blockSize - missingOutBytes); + size_t const extraneousInBytes = FUZ_rand(&randState) % 2; + int const inCSize = (int)((size_t)compressedSize + extraneousInBytes); + char const sentinel = decodedBuffer[targetSize] = block[targetSize] ^ 0x5A; + int const decResult = LZ4_decompress_safe_partial_usingDict(compressedBuffer, decodedBuffer, inCSize, targetSize, blockSize, NULL, 0); + FUZ_CHECKTEST(decResult<0, "LZ4_decompress_safe_partial_usingDict failed despite valid input data (error:%i)", decResult); + FUZ_CHECKTEST(decResult != targetSize, "LZ4_decompress_safe_partial_usingDict did not regenerated required amount of data (%i < %i <= %i)", decResult, targetSize, blockSize); + FUZ_CHECKTEST(decodedBuffer[targetSize] != sentinel, "LZ4_decompress_safe_partial_usingDict overwrite beyond requested size (though %i <= %i <= %i)", decResult, targetSize, blockSize); + FUZ_CHECKTEST(memcmp(block, decodedBuffer, (size_t)targetSize), "LZ4_decompress_safe_partial_usingDict: corruption detected in regenerated data"); + } + + FUZ_DISPLAYTEST("test LZ4_decompress_safe_partial_usingDict() using prefix as dict"); + { size_t const missingOutBytes = FUZ_rand(&randState) % (unsigned)blockSize; + int const targetSize = (int)((size_t)blockSize - missingOutBytes); + size_t const extraneousInBytes = FUZ_rand(&randState) % 2; + int const inCSize = (int)((size_t)compressedSize + extraneousInBytes); + char const sentinel = decodedBuffer[targetSize] = block[targetSize] ^ 0x5A; + int const decResult = LZ4_decompress_safe_partial_usingDict(compressedBuffer, decodedBuffer, inCSize, targetSize, blockSize, decodedBuffer, dictSize); + FUZ_CHECKTEST(decResult<0, "LZ4_decompress_safe_partial_usingDict failed despite valid input data (error:%i)", decResult); + FUZ_CHECKTEST(decResult != targetSize, "LZ4_decompress_safe_partial_usingDict did not regenerated required amount of data (%i < %i <= %i)", decResult, targetSize, blockSize); + FUZ_CHECKTEST(decodedBuffer[targetSize] != sentinel, "LZ4_decompress_safe_partial_usingDict overwrite beyond requested size (though %i <= %i <= %i)", decResult, targetSize, blockSize); + FUZ_CHECKTEST(memcmp(block, decodedBuffer, (size_t)targetSize), "LZ4_decompress_safe_partial_usingDict: corruption detected in regenerated data"); + } + + FUZ_DISPLAYTEST("test LZ4_decompress_safe_partial_usingDict() using external dict"); + { size_t const missingOutBytes = FUZ_rand(&randState) % (unsigned)blockSize; + int const targetSize = (int)((size_t)blockSize - missingOutBytes); + size_t const extraneousInBytes = FUZ_rand(&randState) % 2; + int const inCSize = (int)((size_t)compressedSize + extraneousInBytes); + char const sentinel = decodedBuffer[targetSize] = block[targetSize] ^ 0x5A; + int const decResult = LZ4_decompress_safe_partial_usingDict(compressedBuffer, decodedBuffer, inCSize, targetSize, blockSize, dict, dictSize); + FUZ_CHECKTEST(decResult<0, "LZ4_decompress_safe_partial_usingDict failed despite valid input data (error:%i)", decResult); + FUZ_CHECKTEST(decResult != targetSize, "LZ4_decompress_safe_partial_usingDict did not regenerated required amount of data (%i < %i <= %i)", decResult, targetSize, blockSize); + FUZ_CHECKTEST(decodedBuffer[targetSize] != sentinel, "LZ4_decompress_safe_partial_usingDict overwrite beyond requested size (though %i <= %i <= %i)", decResult, targetSize, blockSize); + FUZ_CHECKTEST(memcmp(block, decodedBuffer, (size_t)targetSize), "LZ4_decompress_safe_partial_usingDict: corruption detected in regenerated data"); + } + /* Test Compression with limited output size */ /* Test compression with output size being exactly what's necessary (should work) */ |