2 * Copyright (c) 2015-present, Yann Collet, Facebook, Inc.
5 * This source code is licensed under both the BSD-style license (found in the
6 * LICENSE file in the root directory of this source tree) and the GPLv2 (found
7 * in the COPYING file in the root directory of this source tree).
8 * You may select, at your option, one of the above-listed licenses.
12 /*-************************************
14 **************************************/
15 #ifdef _MSC_VER /* Visual Studio */
16 # define _CRT_SECURE_NO_WARNINGS /* fgets */
17 # pragma warning(disable : 4127) /* disable: C4127: conditional expression is constant */
18 # pragma warning(disable : 4204) /* disable: C4204: non-constant aggregate initializer */
22 /*-************************************
24 **************************************/
25 #include <stdlib.h> /* free */
26 #include <stdio.h> /* fgets, sscanf */
27 #include <string.h> /* strcmp */
28 #include <time.h> /* clock_t */
29 #define ZSTD_STATIC_LINKING_ONLY /* ZSTD_compressContinue, ZSTD_compressBlock */
30 #include "zstd.h" /* ZSTD_VERSION_STRING */
31 #include "zstd_errors.h" /* ZSTD_getErrorCode */
32 #include "zstdmt_compress.h"
33 #define ZDICT_STATIC_LINKING_ONLY
34 #include "zdict.h" /* ZDICT_trainFromBuffer */
35 #include "datagen.h" /* RDG_genBuffer */
37 #define XXH_STATIC_LINKING_ONLY
38 #include "xxhash.h" /* XXH64 */
41 /*-************************************
43 **************************************/
48 static const U32 FUZ_compressibility_default = 50;
49 static const U32 nbTestsDefault = 30000;
52 /*-************************************
54 **************************************/
55 #define DISPLAY(...) fprintf(stdout, __VA_ARGS__)
56 #define DISPLAYLEVEL(l, ...) if (g_displayLevel>=l) { DISPLAY(__VA_ARGS__); }
57 static U32 g_displayLevel = 2;
59 #define DISPLAYUPDATE(l, ...) if (g_displayLevel>=l) { \
60 if ((FUZ_clockSpan(g_displayClock) > g_refreshRate) || (g_displayLevel>=4)) \
61 { g_displayClock = clock(); DISPLAY(__VA_ARGS__); \
62 if (g_displayLevel>=4) fflush(stdout); } }
63 static const clock_t g_refreshRate = CLOCKS_PER_SEC / 6;
64 static clock_t g_displayClock = 0;
67 /*-*******************************************************
69 *********************************************************/
70 #define MIN(a,b) ((a)<(b)?(a):(b))
71 #define MAX(a,b) ((a)>(b)?(a):(b))
73 static clock_t FUZ_clockSpan(clock_t cStart)
75 return clock() - cStart; /* works even when overflow; max span ~ 30mn */
78 #define FUZ_rotl32(x,r) ((x << r) | (x >> (32 - r)))
79 static unsigned FUZ_rand(unsigned* src)
81 static const U32 prime1 = 2654435761U;
82 static const U32 prime2 = 2246822519U;
86 rand32 = FUZ_rotl32(rand32, 13);
91 static unsigned FUZ_highbit32(U32 v32)
95 while (v32) v32 >>= 1, nbBits++;
100 /*=============================================
102 =============================================*/
103 #if defined(__APPLE__) && defined(__MACH__)
105 #include <malloc/malloc.h> /* malloc_size */
108 unsigned long long totalMalloc;
109 size_t currentMalloc;
115 static const mallocCounter_t INIT_MALLOC_COUNTER = { 0, 0, 0, 0, 0 };
117 static void* FUZ_mallocDebug(void* counter, size_t size)
119 mallocCounter_t* const mcPtr = (mallocCounter_t*)counter;
120 void* const ptr = malloc(size);
121 if (ptr==NULL) return NULL;
122 DISPLAYLEVEL(4, "allocating %u KB => effectively %u KB \n",
123 (U32)(size >> 10), (U32)(malloc_size(ptr) >> 10)); /* OS-X specific */
124 mcPtr->totalMalloc += size;
125 mcPtr->currentMalloc += size;
126 if (mcPtr->currentMalloc > mcPtr->peakMalloc)
127 mcPtr->peakMalloc = mcPtr->currentMalloc;
128 mcPtr->nbMalloc += 1;
132 static void FUZ_freeDebug(void* counter, void* address)
134 mallocCounter_t* const mcPtr = (mallocCounter_t*)counter;
135 DISPLAYLEVEL(4, "freeing %u KB \n", (U32)(malloc_size(address) >> 10));
137 mcPtr->currentMalloc -= malloc_size(address); /* OS-X specific */
141 static void FUZ_displayMallocStats(mallocCounter_t count)
143 DISPLAYLEVEL(3, "peak:%6u KB, nbMallocs:%2u, total:%6u KB \n",
144 (U32)(count.peakMalloc >> 10),
146 (U32)(count.totalMalloc >> 10));
149 #define CHECK_Z(f) { \
150 size_t const err = f; \
151 if (ZSTD_isError(err)) { \
152 DISPLAY("Error => %s : %s ", \
153 #f, ZSTD_getErrorName(err)); \
157 static int FUZ_mallocTests(unsigned seed, double compressibility, unsigned part)
159 size_t const inSize = 64 MB + 16 MB + 4 MB + 1 MB + 256 KB + 64 KB; /* 85.3 MB */
160 size_t const outSize = ZSTD_compressBound(inSize);
161 void* const inBuffer = malloc(inSize);
162 void* const outBuffer = malloc(outSize);
164 /* test only played in verbose mode, as they are long */
165 if (g_displayLevel<3) return 0;
167 /* Create compressible noise */
168 if (!inBuffer || !outBuffer) {
169 DISPLAY("Not enough memory, aborting\n");
172 RDG_genBuffer(inBuffer, inSize, compressibility, 0. /*auto*/, seed);
174 /* simple compression tests */
176 { int compressionLevel;
177 for (compressionLevel=1; compressionLevel<=6; compressionLevel++) {
178 mallocCounter_t malcount = INIT_MALLOC_COUNTER;
179 ZSTD_customMem const cMem = { FUZ_mallocDebug, FUZ_freeDebug, &malcount };
180 ZSTD_CCtx* const cctx = ZSTD_createCCtx_advanced(cMem);
181 CHECK_Z( ZSTD_compressCCtx(cctx, outBuffer, outSize, inBuffer, inSize, compressionLevel) );
183 DISPLAYLEVEL(3, "compressCCtx level %i : ", compressionLevel);
184 FUZ_displayMallocStats(malcount);
187 /* streaming compression tests */
189 { int compressionLevel;
190 for (compressionLevel=1; compressionLevel<=6; compressionLevel++) {
191 mallocCounter_t malcount = INIT_MALLOC_COUNTER;
192 ZSTD_customMem const cMem = { FUZ_mallocDebug, FUZ_freeDebug, &malcount };
193 ZSTD_CCtx* const cstream = ZSTD_createCStream_advanced(cMem);
194 ZSTD_outBuffer out = { outBuffer, outSize, 0 };
195 ZSTD_inBuffer in = { inBuffer, inSize, 0 };
196 CHECK_Z( ZSTD_initCStream(cstream, compressionLevel) );
197 CHECK_Z( ZSTD_compressStream(cstream, &out, &in) );
198 CHECK_Z( ZSTD_endStream(cstream, &out) );
199 ZSTD_freeCStream(cstream);
200 DISPLAYLEVEL(3, "compressStream level %i : ", compressionLevel);
201 FUZ_displayMallocStats(malcount);
204 /* advanced MT API test */
207 for (nbThreads=1; nbThreads<=4; nbThreads++) {
208 int compressionLevel;
209 for (compressionLevel=1; compressionLevel<=6; compressionLevel++) {
210 mallocCounter_t malcount = INIT_MALLOC_COUNTER;
211 ZSTD_customMem const cMem = { FUZ_mallocDebug, FUZ_freeDebug, &malcount };
212 ZSTD_CCtx* const cctx = ZSTD_createCCtx_advanced(cMem);
213 ZSTD_outBuffer out = { outBuffer, outSize, 0 };
214 ZSTD_inBuffer in = { inBuffer, inSize, 0 };
215 CHECK_Z( ZSTD_CCtx_setParameter(cctx, ZSTD_p_compressionLevel, (U32)compressionLevel) );
216 CHECK_Z( ZSTD_CCtx_setParameter(cctx, ZSTD_p_nbThreads, nbThreads) );
217 while ( ZSTD_compress_generic(cctx, &out, &in, ZSTD_e_end) ) {}
219 DISPLAYLEVEL(3, "compress_generic,-T%u,end level %i : ",
220 nbThreads, compressionLevel);
221 FUZ_displayMallocStats(malcount);
224 /* advanced MT streaming API test */
227 for (nbThreads=1; nbThreads<=4; nbThreads++) {
228 int compressionLevel;
229 for (compressionLevel=1; compressionLevel<=6; compressionLevel++) {
230 mallocCounter_t malcount = INIT_MALLOC_COUNTER;
231 ZSTD_customMem const cMem = { FUZ_mallocDebug, FUZ_freeDebug, &malcount };
232 ZSTD_CCtx* const cctx = ZSTD_createCCtx_advanced(cMem);
233 ZSTD_outBuffer out = { outBuffer, outSize, 0 };
234 ZSTD_inBuffer in = { inBuffer, inSize, 0 };
235 CHECK_Z( ZSTD_CCtx_setParameter(cctx, ZSTD_p_compressionLevel, (U32)compressionLevel) );
236 CHECK_Z( ZSTD_CCtx_setParameter(cctx, ZSTD_p_nbThreads, nbThreads) );
237 CHECK_Z( ZSTD_compress_generic(cctx, &out, &in, ZSTD_e_continue) );
238 while ( ZSTD_compress_generic(cctx, &out, &in, ZSTD_e_end) ) {}
240 DISPLAYLEVEL(3, "compress_generic,-T%u,continue level %i : ",
241 nbThreads, compressionLevel);
242 FUZ_displayMallocStats(malcount);
250 static int FUZ_mallocTests(unsigned seed, double compressibility, unsigned part)
252 (void)seed; (void)compressibility; (void)part;
258 /*=============================================
260 =============================================*/
262 #define CHECK_V(var, fn) size_t const var = fn; if (ZSTD_isError(var)) goto _output_error
263 #define CHECK(fn) { CHECK_V(err, fn); }
264 #define CHECKPLUS(var, fn, more) { CHECK_V(var, fn); more; }
266 static int basicUnitTests(U32 seed, double compressibility)
268 size_t const CNBuffSize = 5 MB;
269 void* const CNBuffer = malloc(CNBuffSize);
270 size_t const compressedBufferSize = ZSTD_compressBound(CNBuffSize);
271 void* const compressedBuffer = malloc(compressedBufferSize);
272 void* const decodedBuffer = malloc(CNBuffSize);
273 ZSTD_DCtx* dctx = ZSTD_createDCtx();
278 /* Create compressible noise */
279 if (!CNBuffer || !compressedBuffer || !decodedBuffer) {
280 DISPLAY("Not enough memory, aborting\n");
284 RDG_genBuffer(CNBuffer, CNBuffSize, compressibility, 0., seed);
287 DISPLAYLEVEL(4, "test%3i : ZSTD_getErrorName : ", testNb++);
288 { const char* errorString = ZSTD_getErrorName(0);
289 DISPLAYLEVEL(4, "OK : %s \n", errorString);
292 DISPLAYLEVEL(4, "test%3i : ZSTD_getErrorName with wrong value : ", testNb++);
293 { const char* errorString = ZSTD_getErrorName(499);
294 DISPLAYLEVEL(4, "OK : %s \n", errorString);
298 DISPLAYLEVEL(4, "test%3i : compress %u bytes : ", testNb++, (U32)CNBuffSize);
299 { ZSTD_CCtx* cctx = ZSTD_createCCtx();
300 if (cctx==NULL) goto _output_error;
301 CHECKPLUS(r, ZSTD_compressCCtx(cctx,
302 compressedBuffer, compressedBufferSize,
303 CNBuffer, CNBuffSize, 1),
305 DISPLAYLEVEL(4, "OK (%u bytes : %.2f%%)\n", (U32)cSize, (double)cSize/CNBuffSize*100);
307 DISPLAYLEVEL(4, "test%3i : size of cctx for level 1 : ", testNb++);
308 { size_t const cctxSize = ZSTD_sizeof_CCtx(cctx);
309 DISPLAYLEVEL(4, "%u bytes \n", (U32)cctxSize);
315 DISPLAYLEVEL(4, "test%3i : ZSTD_getFrameContentSize test : ", testNb++);
316 { unsigned long long const rSize = ZSTD_getFrameContentSize(compressedBuffer, cSize);
317 if (rSize != CNBuffSize) goto _output_error;
319 DISPLAYLEVEL(4, "OK \n");
321 DISPLAYLEVEL(4, "test%3i : ZSTD_findDecompressedSize test : ", testNb++);
322 { unsigned long long const rSize = ZSTD_findDecompressedSize(compressedBuffer, cSize);
323 if (rSize != CNBuffSize) goto _output_error;
325 DISPLAYLEVEL(4, "OK \n");
327 DISPLAYLEVEL(4, "test%3i : decompress %u bytes : ", testNb++, (U32)CNBuffSize);
328 { size_t const r = ZSTD_decompress(decodedBuffer, CNBuffSize, compressedBuffer, cSize);
329 if (r != CNBuffSize) goto _output_error; }
330 DISPLAYLEVEL(4, "OK \n");
332 DISPLAYLEVEL(4, "test%3i : check decompressed result : ", testNb++);
334 for (u=0; u<CNBuffSize; u++) {
335 if (((BYTE*)decodedBuffer)[u] != ((BYTE*)CNBuffer)[u]) goto _output_error;;
337 DISPLAYLEVEL(4, "OK \n");
340 DISPLAYLEVEL(4, "test%3i : decompress with null dict : ", testNb++);
341 { size_t const r = ZSTD_decompress_usingDict(dctx, decodedBuffer, CNBuffSize, compressedBuffer, cSize, NULL, 0);
342 if (r != CNBuffSize) goto _output_error; }
343 DISPLAYLEVEL(4, "OK \n");
345 DISPLAYLEVEL(4, "test%3i : decompress with null DDict : ", testNb++);
346 { size_t const r = ZSTD_decompress_usingDDict(dctx, decodedBuffer, CNBuffSize, compressedBuffer, cSize, NULL);
347 if (r != CNBuffSize) goto _output_error; }
348 DISPLAYLEVEL(4, "OK \n");
350 DISPLAYLEVEL(4, "test%3i : decompress with 1 missing byte : ", testNb++);
351 { size_t const r = ZSTD_decompress(decodedBuffer, CNBuffSize, compressedBuffer, cSize-1);
352 if (!ZSTD_isError(r)) goto _output_error;
353 if (ZSTD_getErrorCode((size_t)r) != ZSTD_error_srcSize_wrong) goto _output_error; }
354 DISPLAYLEVEL(4, "OK \n");
356 DISPLAYLEVEL(4, "test%3i : decompress with 1 too much byte : ", testNb++);
357 { size_t const r = ZSTD_decompress(decodedBuffer, CNBuffSize, compressedBuffer, cSize+1);
358 if (!ZSTD_isError(r)) goto _output_error;
359 if (ZSTD_getErrorCode(r) != ZSTD_error_srcSize_wrong) goto _output_error; }
360 DISPLAYLEVEL(4, "OK \n");
363 /* Static CCtx tests */
364 #define STATIC_CCTX_LEVEL 3
365 DISPLAYLEVEL(4, "test%3i : create static CCtx for level %u :", testNb++, STATIC_CCTX_LEVEL);
366 { size_t const staticCCtxSize = ZSTD_estimateCStreamSize(STATIC_CCTX_LEVEL);
367 void* const staticCCtxBuffer = malloc(staticCCtxSize);
368 size_t const staticDCtxSize = ZSTD_estimateDCtxSize();
369 void* const staticDCtxBuffer = malloc(staticDCtxSize);
370 if (staticCCtxBuffer==NULL || staticDCtxBuffer==NULL) {
371 free(staticCCtxBuffer);
372 free(staticDCtxBuffer);
373 DISPLAY("Not enough memory, aborting\n");
377 { ZSTD_CCtx* staticCCtx = ZSTD_initStaticCCtx(staticCCtxBuffer, staticCCtxSize);
378 ZSTD_DCtx* staticDCtx = ZSTD_initStaticDCtx(staticDCtxBuffer, staticDCtxSize);
379 if ((staticCCtx==NULL) || (staticDCtx==NULL)) goto _output_error;
380 DISPLAYLEVEL(4, "OK \n");
382 DISPLAYLEVEL(4, "test%3i : init CCtx for level %u : ", testNb++, STATIC_CCTX_LEVEL);
383 { size_t const r = ZSTD_compressBegin(staticCCtx, STATIC_CCTX_LEVEL);
384 if (ZSTD_isError(r)) goto _output_error; }
385 DISPLAYLEVEL(4, "OK \n");
387 DISPLAYLEVEL(4, "test%3i : simple compression test with static CCtx : ", testNb++);
388 CHECKPLUS(r, ZSTD_compressCCtx(staticCCtx,
389 compressedBuffer, compressedBufferSize,
390 CNBuffer, CNBuffSize, STATIC_CCTX_LEVEL),
392 DISPLAYLEVEL(4, "OK (%u bytes : %.2f%%)\n",
393 (U32)cSize, (double)cSize/CNBuffSize*100);
395 DISPLAYLEVEL(4, "test%3i : simple decompression test with static DCtx : ", testNb++);
396 { size_t const r = ZSTD_decompressDCtx(staticDCtx,
397 decodedBuffer, CNBuffSize,
398 compressedBuffer, cSize);
399 if (r != CNBuffSize) goto _output_error; }
400 DISPLAYLEVEL(4, "OK \n");
402 DISPLAYLEVEL(4, "test%3i : check decompressed result : ", testNb++);
404 for (u=0; u<CNBuffSize; u++) {
405 if (((BYTE*)decodedBuffer)[u] != ((BYTE*)CNBuffer)[u])
408 DISPLAYLEVEL(4, "OK \n");
410 DISPLAYLEVEL(4, "test%3i : init CCtx for too large level (must fail) : ", testNb++);
411 { size_t const r = ZSTD_compressBegin(staticCCtx, ZSTD_maxCLevel());
412 if (!ZSTD_isError(r)) goto _output_error; }
413 DISPLAYLEVEL(4, "OK \n");
415 DISPLAYLEVEL(4, "test%3i : init CCtx for small level %u (should work again) : ", testNb++, 1);
416 { size_t const r = ZSTD_compressBegin(staticCCtx, 1);
417 if (ZSTD_isError(r)) goto _output_error; }
418 DISPLAYLEVEL(4, "OK \n");
420 DISPLAYLEVEL(4, "test%3i : init CStream for small level %u : ", testNb++, 1);
421 { size_t const r = ZSTD_initCStream(staticCCtx, 1);
422 if (ZSTD_isError(r)) goto _output_error; }
423 DISPLAYLEVEL(4, "OK \n");
425 DISPLAYLEVEL(4, "test%3i : init CStream with dictionary (should fail) : ", testNb++);
426 { size_t const r = ZSTD_initCStream_usingDict(staticCCtx, CNBuffer, 64 KB, 1);
427 if (!ZSTD_isError(r)) goto _output_error; }
428 DISPLAYLEVEL(4, "OK \n");
430 DISPLAYLEVEL(4, "test%3i : init DStream (should fail) : ", testNb++);
431 { size_t const r = ZSTD_initDStream(staticDCtx);
432 if (ZSTD_isError(r)) goto _output_error; }
433 { ZSTD_outBuffer output = { decodedBuffer, CNBuffSize, 0 };
434 ZSTD_inBuffer input = { compressedBuffer, ZSTD_FRAMEHEADERSIZE_MAX+1, 0 };
435 size_t const r = ZSTD_decompressStream(staticDCtx, &output, &input);
436 if (!ZSTD_isError(r)) goto _output_error;
438 DISPLAYLEVEL(4, "OK \n");
440 free(staticCCtxBuffer);
441 free(staticDCtxBuffer);
446 /* ZSTDMT simple MT compression test */
447 DISPLAYLEVEL(4, "test%3i : create ZSTDMT CCtx : ", testNb++);
448 { ZSTDMT_CCtx* mtctx = ZSTDMT_createCCtx(2);
450 DISPLAY("mtctx : mot enough memory, aborting \n");
454 DISPLAYLEVEL(4, "OK \n");
456 DISPLAYLEVEL(4, "test%3i : compress %u bytes with 2 threads : ", testNb++, (U32)CNBuffSize);
457 CHECKPLUS(r, ZSTDMT_compressCCtx(mtctx,
458 compressedBuffer, compressedBufferSize,
459 CNBuffer, CNBuffSize,
462 DISPLAYLEVEL(4, "OK (%u bytes : %.2f%%)\n", (U32)cSize, (double)cSize/CNBuffSize*100);
464 DISPLAYLEVEL(4, "test%3i : decompressed size test : ", testNb++);
465 { unsigned long long const rSize = ZSTD_getFrameContentSize(compressedBuffer, cSize);
466 if (rSize != CNBuffSize) {
467 DISPLAY("ZSTD_getFrameContentSize incorrect : %u != %u \n", (U32)rSize, (U32)CNBuffSize);
470 DISPLAYLEVEL(4, "OK \n");
472 DISPLAYLEVEL(4, "test%3i : decompress %u bytes : ", testNb++, (U32)CNBuffSize);
473 { size_t const r = ZSTD_decompress(decodedBuffer, CNBuffSize, compressedBuffer, cSize);
474 if (r != CNBuffSize) goto _output_error; }
475 DISPLAYLEVEL(4, "OK \n");
477 DISPLAYLEVEL(4, "test%3i : check decompressed result : ", testNb++);
479 for (u=0; u<CNBuffSize; u++) {
480 if (((BYTE*)decodedBuffer)[u] != ((BYTE*)CNBuffer)[u]) goto _output_error;;
482 DISPLAYLEVEL(4, "OK \n");
484 DISPLAYLEVEL(4, "test%3i : compress -T2 with checksum : ", testNb++);
485 { ZSTD_parameters params = ZSTD_getParams(1, CNBuffSize, 0);
486 params.fParams.checksumFlag = 1;
487 params.fParams.contentSizeFlag = 1;
488 CHECKPLUS(r, ZSTDMT_compress_advanced(mtctx,
489 compressedBuffer, compressedBufferSize,
490 CNBuffer, CNBuffSize,
491 NULL, params, 3 /*overlapRLog*/),
494 DISPLAYLEVEL(4, "OK (%u bytes : %.2f%%)\n", (U32)cSize, (double)cSize/CNBuffSize*100);
496 DISPLAYLEVEL(4, "test%3i : decompress %u bytes : ", testNb++, (U32)CNBuffSize);
497 { size_t const r = ZSTD_decompress(decodedBuffer, CNBuffSize, compressedBuffer, cSize);
498 if (r != CNBuffSize) goto _output_error; }
499 DISPLAYLEVEL(4, "OK \n");
501 ZSTDMT_freeCCtx(mtctx);
505 /* Simple API multiframe test */
506 DISPLAYLEVEL(4, "test%3i : compress multiple frames : ", testNb++);
510 /* only use the first half so we don't push against size limit of compressedBuffer */
511 size_t const segSize = (CNBuffSize / 2) / segs;
512 for (i = 0; i < segs; i++) {
513 CHECK_V(r, ZSTD_compress(
514 (BYTE *)compressedBuffer + off, CNBuffSize - off,
515 (BYTE *)CNBuffer + segSize * i,
519 /* insert skippable frame */
520 const U32 skipLen = 128 KB;
521 MEM_writeLE32((BYTE*)compressedBuffer + off, ZSTD_MAGIC_SKIPPABLE_START);
522 MEM_writeLE32((BYTE*)compressedBuffer + off + 4, skipLen);
523 off += skipLen + ZSTD_skippableHeaderSize;
528 DISPLAYLEVEL(4, "OK \n");
530 DISPLAYLEVEL(4, "test%3i : get decompressed size of multiple frames : ", testNb++);
531 { unsigned long long const r = ZSTD_findDecompressedSize(compressedBuffer, cSize);
532 if (r != CNBuffSize / 2) goto _output_error; }
533 DISPLAYLEVEL(4, "OK \n");
535 DISPLAYLEVEL(4, "test%3i : decompress multiple frames : ", testNb++);
536 { CHECK_V(r, ZSTD_decompress(decodedBuffer, CNBuffSize, compressedBuffer, cSize));
537 if (r != CNBuffSize / 2) goto _output_error; }
538 DISPLAYLEVEL(4, "OK \n");
540 DISPLAYLEVEL(4, "test%3i : check decompressed result : ", testNb++);
541 if (memcmp(decodedBuffer, CNBuffer, CNBuffSize / 2) != 0) goto _output_error;
542 DISPLAYLEVEL(4, "OK \n");
544 /* Dictionary and CCtx Duplication tests */
545 { ZSTD_CCtx* const ctxOrig = ZSTD_createCCtx();
546 ZSTD_CCtx* const ctxDuplicated = ZSTD_createCCtx();
547 static const size_t dictSize = 551;
549 DISPLAYLEVEL(4, "test%3i : copy context too soon : ", testNb++);
550 { size_t const copyResult = ZSTD_copyCCtx(ctxDuplicated, ctxOrig, 0);
551 if (!ZSTD_isError(copyResult)) goto _output_error; } /* error must be detected */
552 DISPLAYLEVEL(4, "OK \n");
554 DISPLAYLEVEL(4, "test%3i : load dictionary into context : ", testNb++);
555 CHECK( ZSTD_compressBegin_usingDict(ctxOrig, CNBuffer, dictSize, 2) );
556 CHECK( ZSTD_copyCCtx(ctxDuplicated, ctxOrig, 0) ); /* Begin_usingDict implies unknown srcSize, so match that */
557 DISPLAYLEVEL(4, "OK \n");
559 DISPLAYLEVEL(4, "test%3i : compress with flat dictionary : ", testNb++);
561 CHECKPLUS(r, ZSTD_compressEnd(ctxOrig, compressedBuffer, compressedBufferSize,
562 (const char*)CNBuffer + dictSize, CNBuffSize - dictSize),
564 DISPLAYLEVEL(4, "OK (%u bytes : %.2f%%)\n", (U32)cSize, (double)cSize/CNBuffSize*100);
566 DISPLAYLEVEL(4, "test%3i : frame built with flat dictionary should be decompressible : ", testNb++);
567 CHECKPLUS(r, ZSTD_decompress_usingDict(dctx,
568 decodedBuffer, CNBuffSize,
569 compressedBuffer, cSize,
571 if (r != CNBuffSize - dictSize) goto _output_error);
572 DISPLAYLEVEL(4, "OK \n");
574 DISPLAYLEVEL(4, "test%3i : compress with duplicated context : ", testNb++);
575 { size_t const cSizeOrig = cSize;
577 CHECKPLUS(r, ZSTD_compressEnd(ctxDuplicated, compressedBuffer, compressedBufferSize,
578 (const char*)CNBuffer + dictSize, CNBuffSize - dictSize),
580 if (cSize != cSizeOrig) goto _output_error; /* should be identical ==> same size */
582 DISPLAYLEVEL(4, "OK (%u bytes : %.2f%%)\n", (U32)cSize, (double)cSize/CNBuffSize*100);
584 DISPLAYLEVEL(4, "test%3i : frame built with duplicated context should be decompressible : ", testNb++);
585 CHECKPLUS(r, ZSTD_decompress_usingDict(dctx,
586 decodedBuffer, CNBuffSize,
587 compressedBuffer, cSize,
589 if (r != CNBuffSize - dictSize) goto _output_error);
590 DISPLAYLEVEL(4, "OK \n");
592 DISPLAYLEVEL(4, "test%3i : decompress with DDict : ", testNb++);
593 { ZSTD_DDict* const ddict = ZSTD_createDDict(CNBuffer, dictSize);
594 size_t const r = ZSTD_decompress_usingDDict(dctx, decodedBuffer, CNBuffSize, compressedBuffer, cSize, ddict);
595 if (r != CNBuffSize - dictSize) goto _output_error;
596 DISPLAYLEVEL(4, "OK (size of DDict : %u) \n", (U32)ZSTD_sizeof_DDict(ddict));
597 ZSTD_freeDDict(ddict);
600 DISPLAYLEVEL(4, "test%3i : decompress with static DDict : ", testNb++);
601 { size_t const ddictBufferSize = ZSTD_estimateDDictSize(dictSize, ZSTD_dlm_byCopy);
602 void* ddictBuffer = malloc(ddictBufferSize);
603 if (ddictBuffer == NULL) goto _output_error;
604 { ZSTD_DDict* const ddict = ZSTD_initStaticDDict(ddictBuffer, ddictBufferSize, CNBuffer, dictSize, ZSTD_dlm_byCopy);
605 size_t const r = ZSTD_decompress_usingDDict(dctx, decodedBuffer, CNBuffSize, compressedBuffer, cSize, ddict);
606 if (r != CNBuffSize - dictSize) goto _output_error;
609 DISPLAYLEVEL(4, "OK (size of static DDict : %u) \n", (U32)ddictBufferSize);
612 DISPLAYLEVEL(4, "test%3i : check content size on duplicated context : ", testNb++);
613 { size_t const testSize = CNBuffSize / 3;
614 { ZSTD_parameters p = ZSTD_getParams(2, testSize, dictSize);
615 p.fParams.contentSizeFlag = 1;
616 CHECK( ZSTD_compressBegin_advanced(ctxOrig, CNBuffer, dictSize, p, testSize-1) );
618 CHECK( ZSTD_copyCCtx(ctxDuplicated, ctxOrig, testSize) );
620 CHECKPLUS(r, ZSTD_compressEnd(ctxDuplicated, compressedBuffer, ZSTD_compressBound(testSize),
621 (const char*)CNBuffer + dictSize, testSize),
623 { ZSTD_frameHeader zfh;
624 if (ZSTD_getFrameHeader(&zfh, compressedBuffer, cSize)) goto _output_error;
625 if ((zfh.frameContentSize != testSize) && (zfh.frameContentSize != 0)) goto _output_error;
627 DISPLAYLEVEL(4, "OK \n");
629 ZSTD_freeCCtx(ctxOrig);
630 ZSTD_freeCCtx(ctxDuplicated);
633 /* Dictionary and dictBuilder tests */
634 { ZSTD_CCtx* const cctx = ZSTD_createCCtx();
635 size_t dictSize = 16 KB;
636 void* dictBuffer = malloc(dictSize);
637 size_t const totalSampleSize = 1 MB;
638 size_t const sampleUnitSize = 8 KB;
639 U32 const nbSamples = (U32)(totalSampleSize / sampleUnitSize);
640 size_t* const samplesSizes = (size_t*) malloc(nbSamples * sizeof(size_t));
643 if (dictBuffer==NULL || samplesSizes==NULL) {
649 DISPLAYLEVEL(4, "test%3i : dictBuilder : ", testNb++);
650 { U32 u; for (u=0; u<nbSamples; u++) samplesSizes[u] = sampleUnitSize; }
651 dictSize = ZDICT_trainFromBuffer(dictBuffer, dictSize,
652 CNBuffer, samplesSizes, nbSamples);
653 if (ZDICT_isError(dictSize)) goto _output_error;
654 DISPLAYLEVEL(4, "OK, created dictionary of size %u \n", (U32)dictSize);
656 DISPLAYLEVEL(4, "test%3i : check dictID : ", testNb++);
657 dictID = ZDICT_getDictID(dictBuffer, dictSize);
658 if (dictID==0) goto _output_error;
659 DISPLAYLEVEL(4, "OK : %u \n", dictID);
661 DISPLAYLEVEL(4, "test%3i : compress with dictionary : ", testNb++);
662 cSize = ZSTD_compress_usingDict(cctx, compressedBuffer, compressedBufferSize,
663 CNBuffer, CNBuffSize,
664 dictBuffer, dictSize, 4);
665 if (ZSTD_isError(cSize)) goto _output_error;
666 DISPLAYLEVEL(4, "OK (%u bytes : %.2f%%)\n", (U32)cSize, (double)cSize/CNBuffSize*100);
668 DISPLAYLEVEL(4, "test%3i : retrieve dictID from dictionary : ", testNb++);
669 { U32 const did = ZSTD_getDictID_fromDict(dictBuffer, dictSize);
670 if (did != dictID) goto _output_error; /* non-conformant (content-only) dictionary */
672 DISPLAYLEVEL(4, "OK \n");
674 DISPLAYLEVEL(4, "test%3i : retrieve dictID from frame : ", testNb++);
675 { U32 const did = ZSTD_getDictID_fromFrame(compressedBuffer, cSize);
676 if (did != dictID) goto _output_error; /* non-conformant (content-only) dictionary */
678 DISPLAYLEVEL(4, "OK \n");
680 DISPLAYLEVEL(4, "test%3i : frame built with dictionary should be decompressible : ", testNb++);
681 CHECKPLUS(r, ZSTD_decompress_usingDict(dctx,
682 decodedBuffer, CNBuffSize,
683 compressedBuffer, cSize,
684 dictBuffer, dictSize),
685 if (r != CNBuffSize) goto _output_error);
686 DISPLAYLEVEL(4, "OK \n");
688 DISPLAYLEVEL(4, "test%3i : estimate CDict size : ", testNb++);
689 { ZSTD_compressionParameters const cParams = ZSTD_getCParams(1, CNBuffSize, dictSize);
690 size_t const estimatedSize = ZSTD_estimateCDictSize_advanced(dictSize, cParams, ZSTD_dlm_byRef);
691 DISPLAYLEVEL(4, "OK : %u \n", (U32)estimatedSize);
694 DISPLAYLEVEL(4, "test%3i : compress with CDict ", testNb++);
695 { ZSTD_compressionParameters const cParams = ZSTD_getCParams(1, CNBuffSize, dictSize);
696 ZSTD_CDict* const cdict = ZSTD_createCDict_advanced(dictBuffer, dictSize,
697 ZSTD_dlm_byRef, ZSTD_dm_auto,
698 cParams, ZSTD_defaultCMem);
699 DISPLAYLEVEL(4, "(size : %u) : ", (U32)ZSTD_sizeof_CDict(cdict));
700 cSize = ZSTD_compress_usingCDict(cctx, compressedBuffer, compressedBufferSize,
701 CNBuffer, CNBuffSize, cdict);
702 ZSTD_freeCDict(cdict);
703 if (ZSTD_isError(cSize)) goto _output_error;
705 DISPLAYLEVEL(4, "OK (%u bytes : %.2f%%)\n", (U32)cSize, (double)cSize/CNBuffSize*100);
707 DISPLAYLEVEL(4, "test%3i : retrieve dictID from frame : ", testNb++);
708 { U32 const did = ZSTD_getDictID_fromFrame(compressedBuffer, cSize);
709 if (did != dictID) goto _output_error; /* non-conformant (content-only) dictionary */
711 DISPLAYLEVEL(4, "OK \n");
713 DISPLAYLEVEL(4, "test%3i : frame built with dictionary should be decompressible : ", testNb++);
714 CHECKPLUS(r, ZSTD_decompress_usingDict(dctx,
715 decodedBuffer, CNBuffSize,
716 compressedBuffer, cSize,
717 dictBuffer, dictSize),
718 if (r != CNBuffSize) goto _output_error);
719 DISPLAYLEVEL(4, "OK \n");
721 DISPLAYLEVEL(4, "test%3i : compress with static CDict : ", testNb++);
722 { ZSTD_compressionParameters const cParams = ZSTD_getCParams(1, CNBuffSize, dictSize);
723 size_t const cdictSize = ZSTD_estimateCDictSize_advanced(dictSize, cParams, ZSTD_dlm_byCopy);
724 void* const cdictBuffer = malloc(cdictSize);
725 if (cdictBuffer==NULL) goto _output_error;
726 { ZSTD_CDict* const cdict = ZSTD_initStaticCDict(cdictBuffer, cdictSize,
727 dictBuffer, dictSize,
728 ZSTD_dlm_byCopy, ZSTD_dm_auto,
731 DISPLAY("ZSTD_initStaticCDict failed ");
734 cSize = ZSTD_compress_usingCDict(cctx,
735 compressedBuffer, compressedBufferSize,
736 CNBuffer, CNBuffSize, cdict);
737 if (ZSTD_isError(cSize)) {
738 DISPLAY("ZSTD_compress_usingCDict failed ");
743 DISPLAYLEVEL(4, "OK (%u bytes : %.2f%%)\n", (U32)cSize, (double)cSize/CNBuffSize*100);
745 DISPLAYLEVEL(4, "test%3i : ZSTD_compress_usingCDict_advanced, no contentSize, no dictID : ", testNb++);
746 { ZSTD_frameParameters const fParams = { 0 /* frameSize */, 1 /* checksum */, 1 /* noDictID*/ };
747 ZSTD_compressionParameters const cParams = ZSTD_getCParams(1, CNBuffSize, dictSize);
748 ZSTD_CDict* const cdict = ZSTD_createCDict_advanced(dictBuffer, dictSize, ZSTD_dlm_byRef, ZSTD_dm_auto, cParams, ZSTD_defaultCMem);
749 cSize = ZSTD_compress_usingCDict_advanced(cctx, compressedBuffer, compressedBufferSize,
750 CNBuffer, CNBuffSize, cdict, fParams);
751 ZSTD_freeCDict(cdict);
752 if (ZSTD_isError(cSize)) goto _output_error;
754 DISPLAYLEVEL(4, "OK (%u bytes : %.2f%%)\n", (U32)cSize, (double)cSize/CNBuffSize*100);
756 DISPLAYLEVEL(4, "test%3i : try retrieving contentSize from frame : ", testNb++);
757 { U64 const contentSize = ZSTD_getFrameContentSize(compressedBuffer, cSize);
758 if (contentSize != ZSTD_CONTENTSIZE_UNKNOWN) goto _output_error;
760 DISPLAYLEVEL(4, "OK (unknown)\n");
762 DISPLAYLEVEL(4, "test%3i : frame built without dictID should be decompressible : ", testNb++);
763 CHECKPLUS(r, ZSTD_decompress_usingDict(dctx,
764 decodedBuffer, CNBuffSize,
765 compressedBuffer, cSize,
766 dictBuffer, dictSize),
767 if (r != CNBuffSize) goto _output_error);
768 DISPLAYLEVEL(4, "OK \n");
770 DISPLAYLEVEL(4, "test%3i : ZSTD_compress_advanced, no dictID : ", testNb++);
771 { ZSTD_parameters p = ZSTD_getParams(3, CNBuffSize, dictSize);
772 p.fParams.noDictIDFlag = 1;
773 cSize = ZSTD_compress_advanced(cctx, compressedBuffer, compressedBufferSize,
774 CNBuffer, CNBuffSize,
775 dictBuffer, dictSize, p);
776 if (ZSTD_isError(cSize)) goto _output_error;
778 DISPLAYLEVEL(4, "OK (%u bytes : %.2f%%)\n", (U32)cSize, (double)cSize/CNBuffSize*100);
780 DISPLAYLEVEL(4, "test%3i : frame built without dictID should be decompressible : ", testNb++);
781 CHECKPLUS(r, ZSTD_decompress_usingDict(dctx,
782 decodedBuffer, CNBuffSize,
783 compressedBuffer, cSize,
784 dictBuffer, dictSize),
785 if (r != CNBuffSize) goto _output_error);
786 DISPLAYLEVEL(4, "OK \n");
788 DISPLAYLEVEL(4, "test%3i : dictionary containing only header should return error : ", testNb++);
790 const size_t ret = ZSTD_decompress_usingDict(
791 dctx, decodedBuffer, CNBuffSize, compressedBuffer, cSize,
792 "\x37\xa4\x30\xec\x11\x22\x33\x44", 8);
793 if (ZSTD_getErrorCode(ret) != ZSTD_error_dictionary_corrupted) goto _output_error;
795 DISPLAYLEVEL(4, "OK \n");
797 DISPLAYLEVEL(4, "test%3i : Building cdict w/ ZSTD_dm_fullDict on a good dictionary : ", testNb++);
798 { ZSTD_compressionParameters const cParams = ZSTD_getCParams(1, CNBuffSize, dictSize);
799 ZSTD_CDict* const cdict = ZSTD_createCDict_advanced(dictBuffer, dictSize, ZSTD_dlm_byRef, ZSTD_dm_fullDict, cParams, ZSTD_defaultCMem);
800 if (cdict==NULL) goto _output_error;
801 ZSTD_freeCDict(cdict);
803 DISPLAYLEVEL(4, "OK \n");
805 DISPLAYLEVEL(4, "test%3i : Building cdict w/ ZSTD_dm_fullDict on a rawContent (must fail) : ", testNb++);
806 { ZSTD_compressionParameters const cParams = ZSTD_getCParams(1, CNBuffSize, dictSize);
807 ZSTD_CDict* const cdict = ZSTD_createCDict_advanced((const char*)dictBuffer+1, dictSize-1, ZSTD_dlm_byRef, ZSTD_dm_fullDict, cParams, ZSTD_defaultCMem);
808 if (cdict!=NULL) goto _output_error;
809 ZSTD_freeCDict(cdict);
811 DISPLAYLEVEL(4, "OK \n");
813 DISPLAYLEVEL(4, "test%3i : Loading rawContent starting with dict header w/ ZSTD_dm_auto should fail : ", testNb++);
816 MEM_writeLE32((char*)dictBuffer+2, ZSTD_MAGIC_DICTIONARY);
817 ret = ZSTD_CCtx_loadDictionary_advanced(
818 cctx, (const char*)dictBuffer+2, dictSize-2, ZSTD_dlm_byRef, ZSTD_dm_auto);
819 if (!ZSTD_isError(ret)) goto _output_error;
821 DISPLAYLEVEL(4, "OK \n");
823 DISPLAYLEVEL(4, "test%3i : Loading rawContent starting with dict header w/ ZSTD_dm_rawContent should pass : ", testNb++);
826 MEM_writeLE32((char*)dictBuffer+2, ZSTD_MAGIC_DICTIONARY);
827 ret = ZSTD_CCtx_loadDictionary_advanced(
828 cctx, (const char*)dictBuffer+2, dictSize-2, ZSTD_dlm_byRef, ZSTD_dm_rawContent);
829 if (ZSTD_isError(ret)) goto _output_error;
831 DISPLAYLEVEL(4, "OK \n");
838 /* COVER dictionary builder tests */
839 { ZSTD_CCtx* const cctx = ZSTD_createCCtx();
840 size_t dictSize = 16 KB;
841 size_t optDictSize = dictSize;
842 void* dictBuffer = malloc(dictSize);
843 size_t const totalSampleSize = 1 MB;
844 size_t const sampleUnitSize = 8 KB;
845 U32 const nbSamples = (U32)(totalSampleSize / sampleUnitSize);
846 size_t* const samplesSizes = (size_t*) malloc(nbSamples * sizeof(size_t));
847 ZDICT_cover_params_t params;
850 if (dictBuffer==NULL || samplesSizes==NULL) {
856 DISPLAYLEVEL(4, "test%3i : ZDICT_trainFromBuffer_cover : ", testNb++);
857 { U32 u; for (u=0; u<nbSamples; u++) samplesSizes[u] = sampleUnitSize; }
858 memset(¶ms, 0, sizeof(params));
859 params.d = 1 + (FUZ_rand(&seed) % 16);
860 params.k = params.d + (FUZ_rand(&seed) % 256);
861 dictSize = ZDICT_trainFromBuffer_cover(dictBuffer, dictSize,
862 CNBuffer, samplesSizes, nbSamples,
864 if (ZDICT_isError(dictSize)) goto _output_error;
865 DISPLAYLEVEL(4, "OK, created dictionary of size %u \n", (U32)dictSize);
867 DISPLAYLEVEL(4, "test%3i : check dictID : ", testNb++);
868 dictID = ZDICT_getDictID(dictBuffer, dictSize);
869 if (dictID==0) goto _output_error;
870 DISPLAYLEVEL(4, "OK : %u \n", dictID);
872 DISPLAYLEVEL(4, "test%3i : ZDICT_optimizeTrainFromBuffer_cover : ", testNb++);
873 memset(¶ms, 0, sizeof(params));
875 optDictSize = ZDICT_optimizeTrainFromBuffer_cover(dictBuffer, optDictSize,
876 CNBuffer, samplesSizes,
877 nbSamples / 4, ¶ms);
878 if (ZDICT_isError(optDictSize)) goto _output_error;
879 DISPLAYLEVEL(4, "OK, created dictionary of size %u \n", (U32)optDictSize);
881 DISPLAYLEVEL(4, "test%3i : check dictID : ", testNb++);
882 dictID = ZDICT_getDictID(dictBuffer, optDictSize);
883 if (dictID==0) goto _output_error;
884 DISPLAYLEVEL(4, "OK : %u \n", dictID);
891 /* Decompression defense tests */
892 DISPLAYLEVEL(4, "test%3i : Check input length for magic number : ", testNb++);
893 { size_t const r = ZSTD_decompress(decodedBuffer, CNBuffSize, CNBuffer, 3); /* too small input */
894 if (!ZSTD_isError(r)) goto _output_error;
895 if (ZSTD_getErrorCode(r) != ZSTD_error_srcSize_wrong) goto _output_error; }
896 DISPLAYLEVEL(4, "OK \n");
898 DISPLAYLEVEL(4, "test%3i : Check magic Number : ", testNb++);
899 ((char*)(CNBuffer))[0] = 1;
900 { size_t const r = ZSTD_decompress(decodedBuffer, CNBuffSize, CNBuffer, 4);
901 if (!ZSTD_isError(r)) goto _output_error; }
902 DISPLAYLEVEL(4, "OK \n");
904 /* content size verification test */
905 DISPLAYLEVEL(4, "test%3i : Content size verification : ", testNb++);
906 { ZSTD_CCtx* const cctx = ZSTD_createCCtx();
907 size_t const srcSize = 5000;
908 size_t const wrongSrcSize = (srcSize + 1000);
909 ZSTD_parameters params = ZSTD_getParams(1, wrongSrcSize, 0);
910 params.fParams.contentSizeFlag = 1;
911 CHECK( ZSTD_compressBegin_advanced(cctx, NULL, 0, params, wrongSrcSize) );
912 { size_t const result = ZSTD_compressEnd(cctx, decodedBuffer, CNBuffSize, CNBuffer, srcSize);
913 if (!ZSTD_isError(result)) goto _output_error;
914 if (ZSTD_getErrorCode(result) != ZSTD_error_srcSize_wrong) goto _output_error;
915 DISPLAYLEVEL(4, "OK : %s \n", ZSTD_getErrorName(result));
920 /* custom formats tests */
921 { ZSTD_CCtx* const cctx = ZSTD_createCCtx();
922 size_t const inputSize = CNBuffSize / 2; /* won't cause pb with small dict size */
924 /* basic block compression */
925 DISPLAYLEVEL(4, "test%3i : magic-less format test : ", testNb++);
926 CHECK( ZSTD_CCtx_setParameter(cctx, ZSTD_p_format, ZSTD_f_zstd1_magicless) );
927 { ZSTD_inBuffer in = { CNBuffer, inputSize, 0 };
928 ZSTD_outBuffer out = { compressedBuffer, ZSTD_compressBound(inputSize), 0 };
929 size_t const result = ZSTD_compress_generic(cctx, &out, &in, ZSTD_e_end);
930 if (result != 0) goto _output_error;
931 if (in.pos != in.size) goto _output_error;
934 DISPLAYLEVEL(4, "OK (compress : %u -> %u bytes)\n", (U32)inputSize, (U32)cSize);
936 DISPLAYLEVEL(4, "test%3i : decompress normally (should fail) : ", testNb++);
937 { size_t const decodeResult = ZSTD_decompressDCtx(dctx, decodedBuffer, CNBuffSize, compressedBuffer, cSize);
938 if (ZSTD_getErrorCode(decodeResult) != ZSTD_error_prefix_unknown) goto _output_error;
939 DISPLAYLEVEL(4, "OK : %s \n", ZSTD_getErrorName(decodeResult));
942 DISPLAYLEVEL(4, "test%3i : decompress with magic-less instruction : ", testNb++);
943 ZSTD_DCtx_reset(dctx);
944 CHECK( ZSTD_DCtx_setFormat(dctx, ZSTD_f_zstd1_magicless) );
945 { ZSTD_inBuffer in = { compressedBuffer, cSize, 0 };
946 ZSTD_outBuffer out = { decodedBuffer, CNBuffSize, 0 };
947 size_t const result = ZSTD_decompress_generic(dctx, &out, &in);
948 if (result != 0) goto _output_error;
949 if (in.pos != in.size) goto _output_error;
950 if (out.pos != inputSize) goto _output_error;
951 DISPLAYLEVEL(4, "OK : regenerated %u bytes \n", (U32)out.pos);
957 /* block API tests */
958 { ZSTD_CCtx* const cctx = ZSTD_createCCtx();
959 static const size_t dictSize = 65 KB;
960 static const size_t blockSize = 100 KB; /* won't cause pb with small dict size */
963 /* basic block compression */
964 DISPLAYLEVEL(4, "test%3i : Block compression test : ", testNb++);
965 CHECK( ZSTD_compressBegin(cctx, 5) );
966 CHECK( ZSTD_getBlockSize(cctx) >= blockSize);
967 cSize = ZSTD_compressBlock(cctx, compressedBuffer, ZSTD_compressBound(blockSize), CNBuffer, blockSize);
968 if (ZSTD_isError(cSize)) goto _output_error;
969 DISPLAYLEVEL(4, "OK \n");
971 DISPLAYLEVEL(4, "test%3i : Block decompression test : ", testNb++);
972 CHECK( ZSTD_decompressBegin(dctx) );
973 { CHECK_V(r, ZSTD_decompressBlock(dctx, decodedBuffer, CNBuffSize, compressedBuffer, cSize) );
974 if (r != blockSize) goto _output_error; }
975 DISPLAYLEVEL(4, "OK \n");
977 /* dictionary block compression */
978 DISPLAYLEVEL(4, "test%3i : Dictionary Block compression test : ", testNb++);
979 CHECK( ZSTD_compressBegin_usingDict(cctx, CNBuffer, dictSize, 5) );
980 cSize = ZSTD_compressBlock(cctx, compressedBuffer, ZSTD_compressBound(blockSize), (char*)CNBuffer+dictSize, blockSize);
981 if (ZSTD_isError(cSize)) goto _output_error;
982 cSize2 = ZSTD_compressBlock(cctx, (char*)compressedBuffer+cSize, ZSTD_compressBound(blockSize), (char*)CNBuffer+dictSize+blockSize, blockSize);
983 if (ZSTD_isError(cSize2)) goto _output_error;
984 memcpy((char*)compressedBuffer+cSize, (char*)CNBuffer+dictSize+blockSize, blockSize); /* fake non-compressed block */
985 cSize2 = ZSTD_compressBlock(cctx, (char*)compressedBuffer+cSize+blockSize, ZSTD_compressBound(blockSize),
986 (char*)CNBuffer+dictSize+2*blockSize, blockSize);
987 if (ZSTD_isError(cSize2)) goto _output_error;
988 DISPLAYLEVEL(4, "OK \n");
990 DISPLAYLEVEL(4, "test%3i : Dictionary Block decompression test : ", testNb++);
991 CHECK( ZSTD_decompressBegin_usingDict(dctx, CNBuffer, dictSize) );
992 { CHECK_V( r, ZSTD_decompressBlock(dctx, decodedBuffer, CNBuffSize, compressedBuffer, cSize) );
993 if (r != blockSize) goto _output_error; }
994 ZSTD_insertBlock(dctx, (char*)decodedBuffer+blockSize, blockSize); /* insert non-compressed block into dctx history */
995 { CHECK_V( r, ZSTD_decompressBlock(dctx, (char*)decodedBuffer+2*blockSize, CNBuffSize, (char*)compressedBuffer+cSize+blockSize, cSize2) );
996 if (r != blockSize) goto _output_error; }
997 DISPLAYLEVEL(4, "OK \n");
1001 ZSTD_freeDCtx(dctx);
1004 { size_t sampleSize = 0;
1005 DISPLAYLEVEL(4, "test%3i : Long RLE test : ", testNb++);
1006 RDG_genBuffer(CNBuffer, sampleSize, compressibility, 0., seed+1);
1007 memset((char*)CNBuffer+sampleSize, 'B', 256 KB - 1);
1008 sampleSize += 256 KB - 1;
1009 RDG_genBuffer((char*)CNBuffer+sampleSize, 96 KB, compressibility, 0., seed+2);
1010 sampleSize += 96 KB;
1011 cSize = ZSTD_compress(compressedBuffer, ZSTD_compressBound(sampleSize), CNBuffer, sampleSize, 1);
1012 if (ZSTD_isError(cSize)) goto _output_error;
1013 { CHECK_V(regenSize, ZSTD_decompress(decodedBuffer, sampleSize, compressedBuffer, cSize));
1014 if (regenSize!=sampleSize) goto _output_error; }
1015 DISPLAYLEVEL(4, "OK \n");
1018 /* All zeroes test (test bug #137) */
1019 #define ZEROESLENGTH 100
1020 DISPLAYLEVEL(4, "test%3i : compress %u zeroes : ", testNb++, ZEROESLENGTH);
1021 memset(CNBuffer, 0, ZEROESLENGTH);
1022 { CHECK_V(r, ZSTD_compress(compressedBuffer, ZSTD_compressBound(ZEROESLENGTH), CNBuffer, ZEROESLENGTH, 1) );
1024 DISPLAYLEVEL(4, "OK (%u bytes : %.2f%%)\n", (U32)cSize, (double)cSize/ZEROESLENGTH*100);
1026 DISPLAYLEVEL(4, "test%3i : decompress %u zeroes : ", testNb++, ZEROESLENGTH);
1027 { CHECK_V(r, ZSTD_decompress(decodedBuffer, ZEROESLENGTH, compressedBuffer, cSize) );
1028 if (r != ZEROESLENGTH) goto _output_error; }
1029 DISPLAYLEVEL(4, "OK \n");
1031 /* nbSeq limit test */
1032 #define _3BYTESTESTLENGTH 131000
1033 #define NB3BYTESSEQLOG 9
1034 #define NB3BYTESSEQ (1 << NB3BYTESSEQLOG)
1035 #define NB3BYTESSEQMASK (NB3BYTESSEQ-1)
1036 /* creates a buffer full of 3-bytes sequences */
1037 { BYTE _3BytesSeqs[NB3BYTESSEQ][3];
1040 /* create batch of 3-bytes sequences */
1042 for (i=0; i < NB3BYTESSEQ; i++) {
1043 _3BytesSeqs[i][0] = (BYTE)(FUZ_rand(&rSeed) & 255);
1044 _3BytesSeqs[i][1] = (BYTE)(FUZ_rand(&rSeed) & 255);
1045 _3BytesSeqs[i][2] = (BYTE)(FUZ_rand(&rSeed) & 255);
1048 /* randomly fills CNBuffer with prepared 3-bytes sequences */
1050 for (i=0; i < _3BYTESTESTLENGTH; i += 3) { /* note : CNBuffer size > _3BYTESTESTLENGTH+3 */
1051 U32 const id = FUZ_rand(&rSeed) & NB3BYTESSEQMASK;
1052 ((BYTE*)CNBuffer)[i+0] = _3BytesSeqs[id][0];
1053 ((BYTE*)CNBuffer)[i+1] = _3BytesSeqs[id][1];
1054 ((BYTE*)CNBuffer)[i+2] = _3BytesSeqs[id][2];
1056 DISPLAYLEVEL(4, "test%3i : compress lots 3-bytes sequences : ", testNb++);
1057 { CHECK_V(r, ZSTD_compress(compressedBuffer, ZSTD_compressBound(_3BYTESTESTLENGTH),
1058 CNBuffer, _3BYTESTESTLENGTH, 19) );
1060 DISPLAYLEVEL(4, "OK (%u bytes : %.2f%%)\n", (U32)cSize, (double)cSize/_3BYTESTESTLENGTH*100);
1062 DISPLAYLEVEL(4, "test%3i : decompress lots 3-bytes sequence : ", testNb++);
1063 { CHECK_V(r, ZSTD_decompress(decodedBuffer, _3BYTESTESTLENGTH, compressedBuffer, cSize) );
1064 if (r != _3BYTESTESTLENGTH) goto _output_error; }
1065 DISPLAYLEVEL(4, "OK \n");
1067 DISPLAYLEVEL(4, "test%3i : incompressible data and ill suited dictionary : ", testNb++);
1068 RDG_genBuffer(CNBuffer, CNBuffSize, 0.0, 0.1, seed);
1069 { /* Train a dictionary on low characters */
1070 size_t dictSize = 16 KB;
1071 void* const dictBuffer = malloc(dictSize);
1072 size_t const totalSampleSize = 1 MB;
1073 size_t const sampleUnitSize = 8 KB;
1074 U32 const nbSamples = (U32)(totalSampleSize / sampleUnitSize);
1075 size_t* const samplesSizes = (size_t*) malloc(nbSamples * sizeof(size_t));
1076 if (!dictBuffer || !samplesSizes) goto _output_error;
1077 { U32 u; for (u=0; u<nbSamples; u++) samplesSizes[u] = sampleUnitSize; }
1078 dictSize = ZDICT_trainFromBuffer(dictBuffer, dictSize, CNBuffer, samplesSizes, nbSamples);
1079 if (ZDICT_isError(dictSize)) goto _output_error;
1080 /* Reverse the characters to make the dictionary ill suited */
1082 for (u = 0; u < CNBuffSize; ++u) {
1083 ((BYTE*)CNBuffer)[u] = 255 - ((BYTE*)CNBuffer)[u];
1086 { /* Compress the data */
1087 size_t const inputSize = 500;
1088 size_t const outputSize = ZSTD_compressBound(inputSize);
1089 void* const outputBuffer = malloc(outputSize);
1090 ZSTD_CCtx* const cctx = ZSTD_createCCtx();
1091 if (!outputBuffer || !cctx) goto _output_error;
1092 CHECK(ZSTD_compress_usingDict(cctx, outputBuffer, outputSize, CNBuffer, inputSize, dictBuffer, dictSize, 1));
1094 ZSTD_freeCCtx(cctx);
1100 DISPLAYLEVEL(4, "OK \n");
1103 /* findFrameCompressedSize on skippable frames */
1104 DISPLAYLEVEL(4, "test%3i : frame compressed size of skippable frame : ", testNb++);
1105 { const char* frame = "\x50\x2a\x4d\x18\x05\x0\x0\0abcde";
1106 size_t const frameSrcSize = 13;
1107 if (ZSTD_findFrameCompressedSize(frame, frameSrcSize) != frameSrcSize) goto _output_error; }
1108 DISPLAYLEVEL(4, "OK \n");
1110 /* error string tests */
1111 DISPLAYLEVEL(4, "test%3i : testing ZSTD error code strings : ", testNb++);
1112 if (strcmp("No error detected", ZSTD_getErrorName((ZSTD_ErrorCode)(0-ZSTD_error_no_error))) != 0) goto _output_error;
1113 if (strcmp("No error detected", ZSTD_getErrorString(ZSTD_error_no_error)) != 0) goto _output_error;
1114 if (strcmp("Unspecified error code", ZSTD_getErrorString((ZSTD_ErrorCode)(0-ZSTD_error_GENERIC))) != 0) goto _output_error;
1115 if (strcmp("Error (generic)", ZSTD_getErrorName((size_t)0-ZSTD_error_GENERIC)) != 0) goto _output_error;
1116 if (strcmp("Error (generic)", ZSTD_getErrorString(ZSTD_error_GENERIC)) != 0) goto _output_error;
1117 if (strcmp("No error detected", ZSTD_getErrorName(ZSTD_error_GENERIC)) != 0) goto _output_error;
1118 DISPLAYLEVEL(4, "OK \n");
1122 free(compressedBuffer);
1123 free(decodedBuffer);
1128 DISPLAY("Error detected in Unit tests ! \n");
1133 static size_t findDiff(const void* buf1, const void* buf2, size_t max)
1135 const BYTE* b1 = (const BYTE*)buf1;
1136 const BYTE* b2 = (const BYTE*)buf2;
1138 for (u=0; u<max; u++) {
1139 if (b1[u] != b2[u]) break;
1145 static ZSTD_parameters FUZ_makeParams(ZSTD_compressionParameters cParams, ZSTD_frameParameters fParams)
1147 ZSTD_parameters params;
1148 params.cParams = cParams;
1149 params.fParams = fParams;
1153 static size_t FUZ_rLogLength(U32* seed, U32 logLength)
1155 size_t const lengthMask = ((size_t)1 << logLength) - 1;
1156 return (lengthMask+1) + (FUZ_rand(seed) & lengthMask);
1159 static size_t FUZ_randomLength(U32* seed, U32 maxLog)
1161 U32 const logLength = FUZ_rand(seed) % maxLog;
1162 return FUZ_rLogLength(seed, logLength);
1166 #define CHECK(cond, ...) { \
1168 DISPLAY("Error => "); \
1169 DISPLAY(__VA_ARGS__); \
1170 DISPLAY(" (seed %u, test nb %u) \n", seed, testNb); \
1171 goto _output_error; \
1175 #define CHECK_Z(f) { \
1176 size_t const err = f; \
1177 if (ZSTD_isError(err)) { \
1178 DISPLAY("Error => %s : %s ", \
1179 #f, ZSTD_getErrorName(err)); \
1180 DISPLAY(" (seed %u, test nb %u) \n", seed, testNb); \
1181 goto _output_error; \
1185 static int fuzzerTests(U32 seed, U32 nbTests, unsigned startTest, U32 const maxDurationS, double compressibility, int bigTests)
1187 static const U32 maxSrcLog = 23;
1188 static const U32 maxSampleLog = 22;
1189 size_t const srcBufferSize = (size_t)1<<maxSrcLog;
1190 size_t const dstBufferSize = (size_t)1<<maxSampleLog;
1191 size_t const cBufferSize = ZSTD_compressBound(dstBufferSize);
1192 BYTE* cNoiseBuffer[5];
1193 BYTE* srcBuffer; /* jumping pointer */
1194 BYTE* const cBuffer = (BYTE*) malloc (cBufferSize);
1195 BYTE* const dstBuffer = (BYTE*) malloc (dstBufferSize);
1196 BYTE* const mirrorBuffer = (BYTE*) malloc (dstBufferSize);
1197 ZSTD_CCtx* const refCtx = ZSTD_createCCtx();
1198 ZSTD_CCtx* const ctx = ZSTD_createCCtx();
1199 ZSTD_DCtx* const dctx = ZSTD_createDCtx();
1202 U32 coreSeed = seed, lseed = 0;
1203 clock_t const startClock = clock();
1204 clock_t const maxClockSpan = maxDurationS * CLOCKS_PER_SEC;
1205 int const cLevelLimiter = bigTests ? 3 : 2;
1208 cNoiseBuffer[0] = (BYTE*)malloc (srcBufferSize);
1209 cNoiseBuffer[1] = (BYTE*)malloc (srcBufferSize);
1210 cNoiseBuffer[2] = (BYTE*)malloc (srcBufferSize);
1211 cNoiseBuffer[3] = (BYTE*)malloc (srcBufferSize);
1212 cNoiseBuffer[4] = (BYTE*)malloc (srcBufferSize);
1213 CHECK (!cNoiseBuffer[0] || !cNoiseBuffer[1] || !cNoiseBuffer[2] || !cNoiseBuffer[3] || !cNoiseBuffer[4]
1214 || !dstBuffer || !mirrorBuffer || !cBuffer || !refCtx || !ctx || !dctx,
1215 "Not enough memory, fuzzer tests cancelled");
1217 /* Create initial samples */
1218 RDG_genBuffer(cNoiseBuffer[0], srcBufferSize, 0.00, 0., coreSeed); /* pure noise */
1219 RDG_genBuffer(cNoiseBuffer[1], srcBufferSize, 0.05, 0., coreSeed); /* barely compressible */
1220 RDG_genBuffer(cNoiseBuffer[2], srcBufferSize, compressibility, 0., coreSeed);
1221 RDG_genBuffer(cNoiseBuffer[3], srcBufferSize, 0.95, 0., coreSeed); /* highly compressible */
1222 RDG_genBuffer(cNoiseBuffer[4], srcBufferSize, 1.00, 0., coreSeed); /* sparse content */
1223 srcBuffer = cNoiseBuffer[2];
1225 /* catch up testNb */
1226 for (testNb=1; testNb < startTest; testNb++) FUZ_rand(&coreSeed);
1228 /* main test loop */
1229 for ( ; (testNb <= nbTests) || (FUZ_clockSpan(startClock) < maxClockSpan); testNb++ ) {
1230 size_t sampleSize, maxTestSize, totalTestSize;
1231 size_t cSize, totalCSize, totalGenSize;
1238 if (nbTests >= testNb) { DISPLAYUPDATE(2, "\r%6u/%6u ", testNb, nbTests); }
1239 else { DISPLAYUPDATE(2, "\r%6u ", testNb); }
1241 FUZ_rand(&coreSeed);
1242 { U32 const prime1 = 2654435761U; lseed = coreSeed ^ prime1; }
1244 /* srcBuffer selection [0-4] */
1245 { U32 buffNb = FUZ_rand(&lseed) & 0x7F;
1246 if (buffNb & 7) buffNb=2; /* most common : compressible (P) */
1250 const U32 tnb[2] = { 1, 3 }; /* barely/highly compressible */
1251 buffNb = tnb[buffNb >> 3];
1253 const U32 tnb[2] = { 0, 4 }; /* not compressible / sparse */
1254 buffNb = tnb[buffNb >> 3];
1256 srcBuffer = cNoiseBuffer[buffNb];
1259 /* select src segment */
1260 sampleSize = FUZ_randomLength(&lseed, maxSampleLog);
1262 /* create sample buffer (to catch read error with valgrind & sanitizers) */
1263 sampleBuffer = (BYTE*)malloc(sampleSize);
1264 CHECK(sampleBuffer==NULL, "not enough memory for sample buffer");
1265 { size_t const sampleStart = FUZ_rand(&lseed) % (srcBufferSize - sampleSize);
1266 memcpy(sampleBuffer, srcBuffer + sampleStart, sampleSize); }
1267 crcOrig = XXH64(sampleBuffer, sampleSize, 0);
1269 /* compression tests */
1270 { unsigned const cLevel =
1271 ( FUZ_rand(&lseed) %
1272 (ZSTD_maxCLevel() - (FUZ_highbit32((U32)sampleSize) / cLevelLimiter)) )
1274 cSize = ZSTD_compressCCtx(ctx, cBuffer, cBufferSize, sampleBuffer, sampleSize, cLevel);
1275 CHECK(ZSTD_isError(cSize), "ZSTD_compressCCtx failed : %s", ZSTD_getErrorName(cSize));
1277 /* compression failure test : too small dest buffer */
1279 const size_t missing = (FUZ_rand(&lseed) % (cSize-2)) + 1; /* no problem, as cSize > 4 (frameHeaderSizer) */
1280 const size_t tooSmallSize = cSize - missing;
1281 const U32 endMark = 0x4DC2B1A9;
1282 memcpy(dstBuffer+tooSmallSize, &endMark, 4);
1283 { size_t const errorCode = ZSTD_compressCCtx(ctx, dstBuffer, tooSmallSize, sampleBuffer, sampleSize, cLevel);
1284 CHECK(!ZSTD_isError(errorCode), "ZSTD_compressCCtx should have failed ! (buffer too small : %u < %u)", (U32)tooSmallSize, (U32)cSize); }
1285 { U32 endCheck; memcpy(&endCheck, dstBuffer+tooSmallSize, 4);
1286 CHECK(endCheck != endMark, "ZSTD_compressCCtx : dst buffer overflow"); }
1289 /* frame header decompression test */
1290 { ZSTD_frameHeader zfh;
1291 CHECK_Z( ZSTD_getFrameHeader(&zfh, cBuffer, cSize) );
1292 CHECK(zfh.frameContentSize != sampleSize, "Frame content size incorrect");
1295 /* Decompressed size test */
1296 { unsigned long long const rSize = ZSTD_findDecompressedSize(cBuffer, cSize);
1297 CHECK(rSize != sampleSize, "decompressed size incorrect");
1300 /* successful decompression test */
1301 { size_t const margin = (FUZ_rand(&lseed) & 1) ? 0 : (FUZ_rand(&lseed) & 31) + 1;
1302 size_t const dSize = ZSTD_decompress(dstBuffer, sampleSize + margin, cBuffer, cSize);
1303 CHECK(dSize != sampleSize, "ZSTD_decompress failed (%s) (srcSize : %u ; cSize : %u)", ZSTD_getErrorName(dSize), (U32)sampleSize, (U32)cSize);
1304 { U64 const crcDest = XXH64(dstBuffer, sampleSize, 0);
1305 CHECK(crcOrig != crcDest, "decompression result corrupted (pos %u / %u)", (U32)findDiff(sampleBuffer, dstBuffer, sampleSize), (U32)sampleSize);
1308 free(sampleBuffer); /* no longer useful after this point */
1310 /* truncated src decompression test */
1311 { size_t const missing = (FUZ_rand(&lseed) % (cSize-2)) + 1; /* no problem, as cSize > 4 (frameHeaderSizer) */
1312 size_t const tooSmallSize = cSize - missing;
1313 void* cBufferTooSmall = malloc(tooSmallSize); /* valgrind will catch read overflows */
1314 CHECK(cBufferTooSmall == NULL, "not enough memory !");
1315 memcpy(cBufferTooSmall, cBuffer, tooSmallSize);
1316 { size_t const errorCode = ZSTD_decompress(dstBuffer, dstBufferSize, cBufferTooSmall, tooSmallSize);
1317 CHECK(!ZSTD_isError(errorCode), "ZSTD_decompress should have failed ! (truncated src buffer)"); }
1318 free(cBufferTooSmall);
1321 /* too small dst decompression test */
1322 if (sampleSize > 3) {
1323 size_t const missing = (FUZ_rand(&lseed) % (sampleSize-2)) + 1; /* no problem, as cSize > 4 (frameHeaderSizer) */
1324 size_t const tooSmallSize = sampleSize - missing;
1325 static const BYTE token = 0xA9;
1326 dstBuffer[tooSmallSize] = token;
1327 { size_t const errorCode = ZSTD_decompress(dstBuffer, tooSmallSize, cBuffer, cSize);
1328 CHECK(!ZSTD_isError(errorCode), "ZSTD_decompress should have failed : %u > %u (dst buffer too small)", (U32)errorCode, (U32)tooSmallSize); }
1329 CHECK(dstBuffer[tooSmallSize] != token, "ZSTD_decompress : dst buffer overflow");
1332 /* noisy src decompression test */
1334 /* insert noise into src */
1335 { U32 const maxNbBits = FUZ_highbit32((U32)(cSize-4));
1336 size_t pos = 4; /* preserve magic number (too easy to detect) */
1338 /* keep some original src */
1339 { U32 const nbBits = FUZ_rand(&lseed) % maxNbBits;
1340 size_t const mask = (1<<nbBits) - 1;
1341 size_t const skipLength = FUZ_rand(&lseed) & mask;
1344 if (pos <= cSize) break;
1346 { U32 const nbBitsCodes = FUZ_rand(&lseed) % maxNbBits;
1347 U32 const nbBits = nbBitsCodes ? nbBitsCodes-1 : 0;
1348 size_t const mask = (1<<nbBits) - 1;
1349 size_t const rNoiseLength = (FUZ_rand(&lseed) & mask) + 1;
1350 size_t const noiseLength = MIN(rNoiseLength, cSize-pos);
1351 size_t const noiseStart = FUZ_rand(&lseed) % (srcBufferSize - noiseLength);
1352 memcpy(cBuffer + pos, srcBuffer + noiseStart, noiseLength);
1356 /* decompress noisy source */
1357 { U32 const endMark = 0xA9B1C3D6;
1358 memcpy(dstBuffer+sampleSize, &endMark, 4);
1359 { size_t const decompressResult = ZSTD_decompress(dstBuffer, sampleSize, cBuffer, cSize);
1360 /* result *may* be an unlikely success, but even then, it must strictly respect dst buffer boundaries */
1361 CHECK((!ZSTD_isError(decompressResult)) && (decompressResult>sampleSize),
1362 "ZSTD_decompress on noisy src : result is too large : %u > %u (dst buffer)", (U32)decompressResult, (U32)sampleSize);
1364 { U32 endCheck; memcpy(&endCheck, dstBuffer+sampleSize, 4);
1365 CHECK(endMark!=endCheck, "ZSTD_decompress on noisy src : dst buffer overflow");
1366 } } } /* noisy src decompression test */
1368 /*===== Streaming compression test, scattered segments and dictionary =====*/
1370 { U32 const testLog = FUZ_rand(&lseed) % maxSrcLog;
1371 U32 const dictLog = FUZ_rand(&lseed) % maxSrcLog;
1372 int const cLevel = (FUZ_rand(&lseed) %
1374 (MAX(testLog, dictLog) / cLevelLimiter))) +
1376 maxTestSize = FUZ_rLogLength(&lseed, testLog);
1377 if (maxTestSize >= dstBufferSize) maxTestSize = dstBufferSize-1;
1379 dictSize = FUZ_rLogLength(&lseed, dictLog); /* needed also for decompression */
1380 dict = srcBuffer + (FUZ_rand(&lseed) % (srcBufferSize - dictSize));
1382 if (FUZ_rand(&lseed) & 0xF) {
1383 CHECK_Z ( ZSTD_compressBegin_usingDict(refCtx, dict, dictSize, cLevel) );
1385 ZSTD_compressionParameters const cPar = ZSTD_getCParams(cLevel, 0, dictSize);
1386 ZSTD_frameParameters const fPar = { FUZ_rand(&lseed)&1 /* contentSizeFlag */,
1387 !(FUZ_rand(&lseed)&3) /* contentChecksumFlag*/,
1388 0 /*NodictID*/ }; /* note : since dictionary is fake, dictIDflag has no impact */
1389 ZSTD_parameters const p = FUZ_makeParams(cPar, fPar);
1390 CHECK_Z ( ZSTD_compressBegin_advanced(refCtx, dict, dictSize, p, 0) );
1392 CHECK_Z( ZSTD_copyCCtx(ctx, refCtx, 0) );
1395 { U32 const nbChunks = (FUZ_rand(&lseed) & 127) + 2;
1397 XXH64_state_t xxhState;
1398 XXH64_reset(&xxhState, 0);
1399 for (totalTestSize=0, cSize=0, n=0 ; n<nbChunks ; n++) {
1400 size_t const segmentSize = FUZ_randomLength(&lseed, maxSampleLog);
1401 size_t const segmentStart = FUZ_rand(&lseed) % (srcBufferSize - segmentSize);
1403 if (cBufferSize-cSize < ZSTD_compressBound(segmentSize)) break; /* avoid invalid dstBufferTooSmall */
1404 if (totalTestSize+segmentSize > maxTestSize) break;
1406 { size_t const compressResult = ZSTD_compressContinue(ctx, cBuffer+cSize, cBufferSize-cSize, srcBuffer+segmentStart, segmentSize);
1407 CHECK (ZSTD_isError(compressResult), "multi-segments compression error : %s", ZSTD_getErrorName(compressResult));
1408 cSize += compressResult;
1410 XXH64_update(&xxhState, srcBuffer+segmentStart, segmentSize);
1411 memcpy(mirrorBuffer + totalTestSize, srcBuffer+segmentStart, segmentSize);
1412 totalTestSize += segmentSize;
1415 { size_t const flushResult = ZSTD_compressEnd(ctx, cBuffer+cSize, cBufferSize-cSize, NULL, 0);
1416 CHECK (ZSTD_isError(flushResult), "multi-segments epilogue error : %s", ZSTD_getErrorName(flushResult));
1417 cSize += flushResult;
1419 crcOrig = XXH64_digest(&xxhState);
1422 /* streaming decompression test */
1423 /* ensure memory requirement is good enough (should always be true) */
1424 { ZSTD_frameHeader zfh;
1425 CHECK( ZSTD_getFrameHeader(&zfh, cBuffer, ZSTD_frameHeaderSize_max),
1426 "ZSTD_getFrameHeader(): error retrieving frame information");
1427 { size_t const roundBuffSize = ZSTD_decodingBufferSize_min(zfh.windowSize, zfh.frameContentSize);
1428 CHECK_Z(roundBuffSize);
1429 CHECK((roundBuffSize > totalTestSize) && (zfh.frameContentSize!=ZSTD_CONTENTSIZE_UNKNOWN),
1430 "ZSTD_decodingBufferSize_min() requires more memory (%u) than necessary (%u)",
1431 (U32)roundBuffSize, (U32)totalTestSize );
1433 if (dictSize<8) dictSize=0, dict=NULL; /* disable dictionary */
1434 CHECK_Z( ZSTD_decompressBegin_usingDict(dctx, dict, dictSize) );
1437 while (totalCSize < cSize) {
1438 size_t const inSize = ZSTD_nextSrcSizeToDecompress(dctx);
1439 size_t const genSize = ZSTD_decompressContinue(dctx, dstBuffer+totalGenSize, dstBufferSize-totalGenSize, cBuffer+totalCSize, inSize);
1440 CHECK (ZSTD_isError(genSize), "ZSTD_decompressContinue error : %s", ZSTD_getErrorName(genSize));
1441 totalGenSize += genSize;
1442 totalCSize += inSize;
1444 CHECK (ZSTD_nextSrcSizeToDecompress(dctx) != 0, "frame not fully decoded");
1445 CHECK (totalGenSize != totalTestSize, "streaming decompressed data : wrong size")
1446 CHECK (totalCSize != cSize, "compressed data should be fully read")
1447 { U64 const crcDest = XXH64(dstBuffer, totalTestSize, 0);
1448 if (crcDest!=crcOrig) {
1449 size_t const errorPos = findDiff(mirrorBuffer, dstBuffer, totalTestSize);
1450 CHECK (1, "streaming decompressed data corrupted : byte %u / %u (%02X!=%02X)",
1451 (U32)errorPos, (U32)totalTestSize, dstBuffer[errorPos], mirrorBuffer[errorPos]);
1453 } /* for ( ; (testNb <= nbTests) */
1454 DISPLAY("\r%u fuzzer tests completed \n", testNb-1);
1457 ZSTD_freeCCtx(refCtx);
1459 ZSTD_freeDCtx(dctx);
1460 free(cNoiseBuffer[0]);
1461 free(cNoiseBuffer[1]);
1462 free(cNoiseBuffer[2]);
1463 free(cNoiseBuffer[3]);
1464 free(cNoiseBuffer[4]);
1476 /*_*******************************************************
1478 *********************************************************/
1479 static int FUZ_usage(const char* programName)
1481 DISPLAY( "Usage :\n");
1482 DISPLAY( " %s [args]\n", programName);
1484 DISPLAY( "Arguments :\n");
1485 DISPLAY( " -i# : Nb of tests (default:%u) \n", nbTestsDefault);
1486 DISPLAY( " -s# : Select seed (default:prompt user)\n");
1487 DISPLAY( " -t# : Select starting test number (default:0)\n");
1488 DISPLAY( " -P# : Select compressibility in %% (default:%u%%)\n", FUZ_compressibility_default);
1489 DISPLAY( " -v : verbose\n");
1490 DISPLAY( " -p : pause at the end\n");
1491 DISPLAY( " -h : display help and exit\n");
1495 /*! readU32FromChar() :
1496 @return : unsigned integer value read from input in `char` format
1497 allows and interprets K, KB, KiB, M, MB and MiB suffix.
1498 Will also modify `*stringPtr`, advancing it to position where it stopped reading.
1499 Note : function result can overflow if digit string > MAX_UINT */
1500 static unsigned readU32FromChar(const char** stringPtr)
1502 unsigned result = 0;
1503 while ((**stringPtr >='0') && (**stringPtr <='9'))
1504 result *= 10, result += **stringPtr - '0', (*stringPtr)++ ;
1505 if ((**stringPtr=='K') || (**stringPtr=='M')) {
1507 if (**stringPtr=='M') result <<= 10;
1509 if (**stringPtr=='i') (*stringPtr)++;
1510 if (**stringPtr=='B') (*stringPtr)++;
1515 /** longCommandWArg() :
1516 * check if *stringPtr is the same as longCommand.
1517 * If yes, @return 1 and advances *stringPtr to the position which immediately follows longCommand.
1518 * @return 0 and doesn't modify *stringPtr otherwise.
1520 static unsigned longCommandWArg(const char** stringPtr, const char* longCommand)
1522 size_t const comSize = strlen(longCommand);
1523 int const result = !strncmp(*stringPtr, longCommand, comSize);
1524 if (result) *stringPtr += comSize;
1528 int main(int argc, const char** argv)
1533 int nbTests = nbTestsDefault;
1535 U32 proba = FUZ_compressibility_default;
1538 U32 maxDuration = 0;
1540 U32 memTestsOnly = 0;
1541 const char* const programName = argv[0];
1543 /* Check command line */
1544 for (argNb=1; argNb<argc; argNb++) {
1545 const char* argument = argv[argNb];
1546 if(!argument) continue; /* Protection if argument empty */
1548 /* Handle commands. Aggregated commands are allowed */
1549 if (argument[0]=='-') {
1551 if (longCommandWArg(&argument, "--memtest=")) { memTestsOnly = readU32FromChar(&argument); continue; }
1553 if (!strcmp(argument, "--memtest")) { memTestsOnly=1; continue; }
1554 if (!strcmp(argument, "--no-big-tests")) { bigTests=0; continue; }
1557 while (*argument!=0) {
1561 return FUZ_usage(programName);
1573 case 'p': /* pause at the end */
1579 argument++; maxDuration = 0;
1580 nbTests = readU32FromChar(&argument);
1586 maxDuration = readU32FromChar(&argument);
1587 if (*argument=='s') argument++; /* seconds */
1588 if (*argument=='m') maxDuration *= 60, argument++; /* minutes */
1589 if (*argument=='n') argument++;
1595 seed = readU32FromChar(&argument);
1600 testNb = readU32FromChar(&argument);
1603 case 'P': /* compressibility % */
1605 proba = readU32FromChar(&argument);
1606 if (proba>100) proba = 100;
1610 return (FUZ_usage(programName), 1);
1611 } } } } /* for (argNb=1; argNb<argc; argNb++) */
1614 DISPLAY("Starting zstd tester (%i-bits, %s)\n", (int)(sizeof(size_t)*8), ZSTD_VERSION_STRING);
1617 time_t const t = time(NULL);
1618 U32 const h = XXH32(&t, sizeof(t), 1);
1622 DISPLAY("Seed = %u\n", seed);
1623 if (proba!=FUZ_compressibility_default) DISPLAY("Compressibility : %u%%\n", proba);
1626 g_displayLevel = MAX(3, g_displayLevel);
1627 return FUZ_mallocTests(seed, ((double)proba) / 100, memTestsOnly);
1630 if (nbTests < testNb) nbTests = testNb;
1633 result = basicUnitTests(0, ((double)proba) / 100); /* constant seed for predictability */
1635 result = fuzzerTests(seed, nbTests, testNb, maxDuration, ((double)proba) / 100, bigTests);
1638 DISPLAY("Press Enter \n");