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Add test case to roundtrip using ZSTD_getSequences() and ZSTD_compressSequences()

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This commit is contained in:
senhuang42 2020-11-03 18:53:44 -05:00
parent 5fd69f8173
commit 2bbdddf24e
2 changed files with 61 additions and 8 deletions
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14
lib/compress/zstd_compress.c
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@ -3407,7 +3407,6 @@ static size_t ZSTD_writeEpilogue(ZSTD_CCtx* cctx, void* dst, size_t dstCapacity)
}
if (cctx->stage != ZSTDcs_ending) {
DEBUGLOG(4, "did this\n");
/* write one last empty block, make it the "last" block */
U32 const cBlockHeader24 = 1 /* last block */ + (((U32)bt_raw)<<1) + 0;
RETURN_ERROR_IF(dstCapacity<4, dstSize_tooSmall, "no room for epilogue");
@ -4389,7 +4388,7 @@ size_t ZSTD_compressStream2( ZSTD_CCtx* cctx,
/* transparent initialization stage */
if (cctx->streamStage == zcss_init) {
ZSTD_CCtx_init_compressStream2(cctx, endOp, input->size);
FORWARD_IF_ERROR(ZSTD_CCtx_init_compressStream2(cctx, endOp, input->size), "CompressStream2 initialization failed");
ZSTD_setBufferExpectations(cctx, output, input); /* Set initial buffer expectations now that we've initialized */
}
/* end of transparent initialization stage */
@ -4661,11 +4660,11 @@ static size_t ZSTD_copySequencesToSeqStore(seqStore_t* seqStore, const ZSTD_sequ
*
* Returns the cumulative size of all compressed blocks (including their headers), otherwise a ZSTD error
*/
size_t ZSTD_compressSequences_internal(void* dst, size_t dstCapacity,
ZSTD_CCtx* cctx,
const ZSTD_Sequence* inSeqs, size_t inSeqsSize,
const void* src, size_t srcSize,
ZSTD_sequenceFormat_e format) {
static size_t ZSTD_compressSequences_internal(void* dst, size_t dstCapacity,
ZSTD_CCtx* cctx,
const ZSTD_Sequence* inSeqs, size_t inSeqsSize,
const void* src, size_t srcSize,
ZSTD_sequenceFormat_e format) {
U32 cSize = 0;
U32 lastBlock;
U32 blockSize;
@ -4675,7 +4674,6 @@ size_t ZSTD_compressSequences_internal(void* dst, size_t dstCapacity,
seqStore_t blockSeqStore;
blockSeqStore.longLengthID = 0;
blockSeqStore.longLengthPos = 0;
size_t origDstCapacity = dstCapacity;
DEBUGLOG(4, "ZSTD_compressSequences_internal srcSize: %zu, inSeqsSize: %zu", srcSize, inSeqsSize);
BYTE const* ip = (BYTE const*)src;

55
tests/fuzzer.c
View File

@ -2740,6 +2740,61 @@ static int basicUnitTests(U32 const seed, double compressibility)
}
DISPLAYLEVEL(3, "OK \n");
DISPLAYLEVEL(3, "test%3i : ZSTD_getSequences followed by ZSTD_compressSequences : ", testNb++);
{
size_t srcSize = 150 KB;
BYTE* src = (BYTE*)CNBuffer;
BYTE* dst = (BYTE*)compressedBuffer;
size_t dstSize = ZSTD_compressBound(srcSize);
size_t decompressSize = srcSize;
char* decompressBuffer = (char*)malloc(decompressSize);
size_t compressedSize;
size_t dSize;
ZSTD_CCtx* cctx = ZSTD_createCCtx();
ZSTD_Sequence* seqs = (ZSTD_Sequence*)malloc(srcSize * sizeof(ZSTD_Sequence));
size_t seqsSize;
if (seqs == NULL) goto _output_error;
assert(cctx != NULL);
/* Populate src with random data */
RDG_genBuffer(CNBuffer, srcSize, compressibility, 0., seed);
/* Test with block delimiters roundtrip */
seqsSize = ZSTD_getSequences(cctx, seqs, srcSize, src, srcSize, ZSTD_sf_explicitBlockDelimiters);
compressedSize = ZSTD_compressSequences(dst, dstSize, seqs, seqsSize, src, srcSize, 3 /* clevel */, ZSTD_sf_explicitBlockDelimiters);
if (ZSTD_isError(compressedSize)) {
DISPLAY("Error in sequence compression with block delims\n");
goto _output_error;
}
dSize = ZSTD_decompress(decompressBuffer, decompressSize, dst, compressedSize);
if (ZSTD_isError(dSize)) {
DISPLAY("Error in sequence compression roundtrip with block delims\n");
goto _output_error;
}
assert(!memcmp(decompressBuffer, src, srcSize));
/* Test with no block delimiters roundtrip */
seqsSize = ZSTD_getSequences(cctx, seqs, srcSize, src, srcSize, ZSTD_sf_noBlockDelimiters);
compressedSize = ZSTD_compressSequences(dst, dstSize, seqs, seqsSize, src, srcSize, 3 /* clevel */, ZSTD_sf_noBlockDelimiters);
if (ZSTD_isError(compressedSize)) {
DISPLAY("Error in sequence compression with no block delims\n");
goto _output_error;
}
dSize = ZSTD_decompress(decompressBuffer, decompressSize, dst, compressedSize);
if (ZSTD_isError(dSize)) {
DISPLAY("Error in sequence compression roundtrip with no block delims\n");
goto _output_error;
}
assert(!memcmp(decompressBuffer, src, srcSize));
ZSTD_freeCCtx(cctx);
free(decompressBuffer);
free(seqs);
}
DISPLAYLEVEL(3, "OK \n");
/* Multiple blocks of zeros test */
#define LONGZEROSLENGTH 1000000 /* 1MB of zeros */
DISPLAYLEVEL(3, "test%3i : compress %u zeroes : ", testNb++, LONGZEROSLENGTH);