zstd/contrib/linux-kernel/test/UserlandTest.cpp
2017-06-19 12:32:04 -07:00

566 lines
19 KiB
C++

extern "C" {
#include <linux/zstd.h>
}
#include <gtest/gtest.h>
#include <memory>
#include <string>
#include <iostream>
using namespace std;
namespace {
struct WorkspaceDeleter {
void *memory;
template <typename T> void operator()(T const *) { free(memory); }
};
std::unique_ptr<ZSTD_CCtx, WorkspaceDeleter>
createCCtx(ZSTD_compressionParameters cParams) {
size_t const workspaceSize = ZSTD_CCtxWorkspaceBound(cParams);
void *workspace = malloc(workspaceSize);
std::unique_ptr<ZSTD_CCtx, WorkspaceDeleter> cctx{
ZSTD_initCCtx(workspace, workspaceSize), WorkspaceDeleter{workspace}};
if (!cctx) {
throw std::runtime_error{"Bad cctx"};
}
return cctx;
}
std::unique_ptr<ZSTD_CCtx, WorkspaceDeleter>
createCCtx(int level, unsigned long long estimatedSrcSize = 0,
size_t dictSize = 0) {
auto const cParams = ZSTD_getCParams(level, estimatedSrcSize, dictSize);
return createCCtx(cParams);
}
std::unique_ptr<ZSTD_DCtx, WorkspaceDeleter>
createDCtx() {
size_t const workspaceSize = ZSTD_DCtxWorkspaceBound();
void *workspace = malloc(workspaceSize);
std::unique_ptr<ZSTD_DCtx, WorkspaceDeleter> dctx{
ZSTD_initDCtx(workspace, workspaceSize), WorkspaceDeleter{workspace}};
if (!dctx) {
throw std::runtime_error{"Bad dctx"};
}
return dctx;
}
std::unique_ptr<ZSTD_CDict, WorkspaceDeleter>
createCDict(std::string const& dict, ZSTD_parameters params) {
size_t const workspaceSize = ZSTD_CDictWorkspaceBound(params.cParams);
void *workspace = malloc(workspaceSize);
std::unique_ptr<ZSTD_CDict, WorkspaceDeleter> cdict{
ZSTD_initCDict(dict.data(), dict.size(), params, workspace,
workspaceSize),
WorkspaceDeleter{workspace}};
if (!cdict) {
throw std::runtime_error{"Bad cdict"};
}
return cdict;
}
std::unique_ptr<ZSTD_CDict, WorkspaceDeleter>
createCDict(std::string const& dict, int level) {
auto const params = ZSTD_getParams(level, 0, dict.size());
return createCDict(dict, params);
}
std::unique_ptr<ZSTD_DDict, WorkspaceDeleter>
createDDict(std::string const& dict) {
size_t const workspaceSize = ZSTD_DDictWorkspaceBound();
void *workspace = malloc(workspaceSize);
std::unique_ptr<ZSTD_DDict, WorkspaceDeleter> ddict{
ZSTD_initDDict(dict.data(), dict.size(), workspace, workspaceSize),
WorkspaceDeleter{workspace}};
if (!ddict) {
throw std::runtime_error{"Bad ddict"};
}
return ddict;
}
std::unique_ptr<ZSTD_CStream, WorkspaceDeleter>
createCStream(ZSTD_parameters params, unsigned long long pledgedSrcSize = 0) {
size_t const workspaceSize = ZSTD_CStreamWorkspaceBound(params.cParams);
void *workspace = malloc(workspaceSize);
std::unique_ptr<ZSTD_CStream, WorkspaceDeleter> zcs{
ZSTD_initCStream(params, pledgedSrcSize, workspace, workspaceSize)};
if (!zcs) {
throw std::runtime_error{"bad cstream"};
}
return zcs;
}
std::unique_ptr<ZSTD_CStream, WorkspaceDeleter>
createCStream(ZSTD_compressionParameters cParams, ZSTD_CDict const &cdict,
unsigned long long pledgedSrcSize = 0) {
size_t const workspaceSize = ZSTD_CStreamWorkspaceBound(cParams);
void *workspace = malloc(workspaceSize);
std::unique_ptr<ZSTD_CStream, WorkspaceDeleter> zcs{
ZSTD_initCStream_usingCDict(&cdict, pledgedSrcSize, workspace,
workspaceSize)};
if (!zcs) {
throw std::runtime_error{"bad cstream"};
}
return zcs;
}
std::unique_ptr<ZSTD_CStream, WorkspaceDeleter>
createCStream(int level, unsigned long long pledgedSrcSize = 0) {
auto const params = ZSTD_getParams(level, pledgedSrcSize, 0);
return createCStream(params, pledgedSrcSize);
}
std::unique_ptr<ZSTD_DStream, WorkspaceDeleter>
createDStream(size_t maxWindowSize = (1ULL << ZSTD_WINDOWLOG_MAX),
ZSTD_DDict const *ddict = nullptr) {
size_t const workspaceSize = ZSTD_DStreamWorkspaceBound(maxWindowSize);
void *workspace = malloc(workspaceSize);
std::unique_ptr<ZSTD_DStream, WorkspaceDeleter> zds{
ddict == nullptr
? ZSTD_initDStream(maxWindowSize, workspace, workspaceSize)
: ZSTD_initDStream_usingDDict(maxWindowSize, ddict, workspace,
workspaceSize)};
if (!zds) {
throw std::runtime_error{"bad dstream"};
}
return zds;
}
std::string compress(ZSTD_CCtx &cctx, std::string const &data,
ZSTD_parameters params, std::string const &dict = "") {
std::string compressed;
compressed.resize(ZSTD_compressBound(data.size()));
size_t const rc =
dict.empty()
? ZSTD_compressCCtx(&cctx, &compressed[0], compressed.size(),
data.data(), data.size(), params)
: ZSTD_compress_usingDict(&cctx, &compressed[0], compressed.size(),
data.data(), data.size(), dict.data(),
dict.size(), params);
if (ZSTD_isError(rc)) {
throw std::runtime_error{"compression error"};
}
compressed.resize(rc);
return compressed;
}
std::string compress(ZSTD_CCtx& cctx, std::string const& data, int level, std::string const& dict = "") {
auto const params = ZSTD_getParams(level, 0, dict.size());
return compress(cctx, data, params, dict);
}
std::string decompress(ZSTD_DCtx& dctx, std::string const& compressed, size_t decompressedSize, std::string const& dict = "") {
std::string decompressed;
decompressed.resize(decompressedSize);
size_t const rc =
dict.empty()
? ZSTD_decompressDCtx(&dctx, &decompressed[0], decompressed.size(),
compressed.data(), compressed.size())
: ZSTD_decompress_usingDict(
&dctx, &decompressed[0], decompressed.size(), compressed.data(),
compressed.size(), dict.data(), dict.size());
if (ZSTD_isError(rc)) {
throw std::runtime_error{"decompression error"};
}
decompressed.resize(rc);
return decompressed;
}
std::string compress(ZSTD_CCtx& cctx, std::string const& data, ZSTD_CDict& cdict) {
std::string compressed;
compressed.resize(ZSTD_compressBound(data.size()));
size_t const rc =
ZSTD_compress_usingCDict(&cctx, &compressed[0], compressed.size(),
data.data(), data.size(), &cdict);
if (ZSTD_isError(rc)) {
throw std::runtime_error{"compression error"};
}
compressed.resize(rc);
return compressed;
}
std::string decompress(ZSTD_DCtx& dctx, std::string const& compressed, size_t decompressedSize, ZSTD_DDict& ddict) {
std::string decompressed;
decompressed.resize(decompressedSize);
size_t const rc =
ZSTD_decompress_usingDDict(&dctx, &decompressed[0], decompressed.size(),
compressed.data(), compressed.size(), &ddict);
if (ZSTD_isError(rc)) {
throw std::runtime_error{"decompression error"};
}
decompressed.resize(rc);
return decompressed;
}
std::string compress(ZSTD_CStream& zcs, std::string const& data) {
std::string compressed;
compressed.resize(ZSTD_compressBound(data.size()));
ZSTD_inBuffer in = {data.data(), data.size(), 0};
ZSTD_outBuffer out = {&compressed[0], compressed.size(), 0};
while (in.pos != in.size) {
size_t const rc = ZSTD_compressStream(&zcs, &out, &in);
if (ZSTD_isError(rc)) {
throw std::runtime_error{"compress stream failed"};
}
}
size_t const rc = ZSTD_endStream(&zcs, &out);
if (rc != 0) {
throw std::runtime_error{"compress end failed"};
}
compressed.resize(out.pos);
return compressed;
}
std::string decompress(ZSTD_DStream &zds, std::string const &compressed,
size_t decompressedSize) {
std::string decompressed;
decompressed.resize(decompressedSize);
ZSTD_inBuffer in = {compressed.data(), compressed.size(), 0};
ZSTD_outBuffer out = {&decompressed[0], decompressed.size(), 0};
while (in.pos != in.size) {
size_t const rc = ZSTD_decompressStream(&zds, &out, &in);
if (ZSTD_isError(rc)) {
throw std::runtime_error{"decompress stream failed"};
}
}
decompressed.resize(out.pos);
return decompressed;
}
std::string makeData(size_t size) {
std::string result;
result.reserve(size + 20);
while (result.size() < size) {
result += "Hello world";
}
return result;
}
std::string const kData = "Hello world";
std::string const kPlainDict = makeData(10000);
std::string const kZstdDict{
"\x37\xA4\x30\xEC\x99\x69\x58\x1C\x21\x10\xD8\x4A\x84\x01\xCC\xF3"
"\x3C\xCF\x9B\x25\xBB\xC9\x6E\xB2\x9B\xEC\x26\xAD\xCF\xDF\x4E\xCD"
"\xF3\x2C\x3A\x21\x84\x10\x42\x08\x21\x01\x33\xF1\x78\x3C\x1E\x8F"
"\xC7\xE3\xF1\x78\x3C\xCF\xF3\xBC\xF7\xD4\x42\x41\x41\x41\x41\x41"
"\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41"
"\x41\x41\x41\x41\xA1\x50\x28\x14\x0A\x85\x42\xA1\x50\x28\x14\x0A"
"\x85\xA2\x28\x8A\xA2\x28\x4A\x29\x7D\x74\xE1\xE1\xE1\xE1\xE1\xE1"
"\xE1\xE1\xE1\xE1\xE1\xE1\xE1\xE1\xE1\xE1\xE1\xE1\xE1\xF1\x78\x3C"
"\x1E\x8F\xC7\xE3\xF1\x78\x9E\xE7\x79\xEF\x01\x01\x00\x00\x00\x04"
"\x00\x00\x00\x08\x00\x00\x00"
"0123456789",
161};
}
TEST(Block, CCtx) {
auto cctx = createCCtx(1);
auto const compressed = compress(*cctx, kData, 1);
auto dctx = createDCtx();
auto const decompressed = decompress(*dctx, compressed, kData.size());
EXPECT_EQ(kData, decompressed);
}
TEST(Block, NoContentSize) {
auto cctx = createCCtx(1);
auto const c = compress(*cctx, kData, 1);
auto const size = ZSTD_findDecompressedSize(c.data(), c.size());
EXPECT_EQ(ZSTD_CONTENTSIZE_UNKNOWN, size);
}
TEST(Block, ContentSize) {
auto cctx = createCCtx(1);
auto params = ZSTD_getParams(1, 0, 0);
params.fParams.contentSizeFlag = 1;
auto const c = compress(*cctx, kData, params);
auto const size = ZSTD_findDecompressedSize(c.data(), c.size());
EXPECT_EQ(kData.size(), size);
}
TEST(Block, CCtxLevelIncrease) {
std::string c;
auto cctx = createCCtx(22);
auto dctx = createDCtx();
for (int level = 1; level <= 22; ++level) {
auto compressed = compress(*cctx, kData, level);
auto const decompressed = decompress(*dctx, compressed, kData.size());
EXPECT_EQ(kData, decompressed);
}
}
TEST(Block, PlainDict) {
auto cctx = createCCtx(1);
auto const compressed = compress(*cctx, kData, 1, kPlainDict);
auto dctx = createDCtx();
EXPECT_ANY_THROW(decompress(*dctx, compressed, kData.size()));
auto const decompressed =
decompress(*dctx, compressed, kData.size(), kPlainDict);
EXPECT_EQ(kData, decompressed);
}
TEST(Block, ZstdDict) {
auto cctx = createCCtx(1);
auto const compressed = compress(*cctx, kData, 1, kZstdDict);
auto dctx = createDCtx();
EXPECT_ANY_THROW(decompress(*dctx, compressed, kData.size()));
auto const decompressed =
decompress(*dctx, compressed, kData.size(), kZstdDict);
EXPECT_EQ(kData, decompressed);
}
TEST(Block, PreprocessedPlainDict) {
auto cctx = createCCtx(1);
auto const cdict = createCDict(kPlainDict, 1);
auto const compressed = compress(*cctx, kData, *cdict);
auto dctx = createDCtx();
auto const ddict = createDDict(kPlainDict);
EXPECT_ANY_THROW(decompress(*dctx, compressed, kData.size()));
auto const decompressed =
decompress(*dctx, compressed, kData.size(), *ddict);
EXPECT_EQ(kData, decompressed);
}
TEST(Block, PreprocessedZstdDict) {
auto cctx = createCCtx(1);
auto const cdict = createCDict(kZstdDict, 1);
auto const compressed = compress(*cctx, kData, *cdict);
auto dctx = createDCtx();
auto const ddict = createDDict(kZstdDict);
EXPECT_ANY_THROW(decompress(*dctx, compressed, kData.size()));
auto const decompressed =
decompress(*dctx, compressed, kData.size(), *ddict);
EXPECT_EQ(kData, decompressed);
}
TEST(Block, ReinitializeCCtx) {
auto cctx = createCCtx(1);
{
auto const compressed = compress(*cctx, kData, 1);
auto dctx = createDCtx();
auto const decompressed = decompress(*dctx, compressed, kData.size());
EXPECT_EQ(kData, decompressed);
}
// Create the cctx with the same memory
auto d = cctx.get_deleter();
auto raw = cctx.release();
auto params = ZSTD_getParams(1, 0, 0);
cctx.reset(
ZSTD_initCCtx(d.memory, ZSTD_CCtxWorkspaceBound(params.cParams)));
// Repeat
{
auto const compressed = compress(*cctx, kData, 1);
auto dctx = createDCtx();
auto const decompressed = decompress(*dctx, compressed, kData.size());
EXPECT_EQ(kData, decompressed);
}
}
TEST(Block, ReinitializeDCtx) {
auto dctx = createDCtx();
{
auto cctx = createCCtx(1);
auto const compressed = compress(*cctx, kData, 1);
auto const decompressed = decompress(*dctx, compressed, kData.size());
EXPECT_EQ(kData, decompressed);
}
// Create the cctx with the same memory
auto d = dctx.get_deleter();
auto raw = dctx.release();
dctx.reset(ZSTD_initDCtx(d.memory, ZSTD_DCtxWorkspaceBound()));
// Repeat
{
auto cctx = createCCtx(1);
auto const compressed = compress(*cctx, kData, 1);
auto dctx = createDCtx();
auto const decompressed = decompress(*dctx, compressed, kData.size());
EXPECT_EQ(kData, decompressed);
}
}
TEST(Stream, Basic) {
auto zcs = createCStream(1);
auto const compressed = compress(*zcs, kData);
auto zds = createDStream();
auto const decompressed = decompress(*zds, compressed, kData.size());
EXPECT_EQ(kData, decompressed);
}
TEST(Stream, PlainDict) {
auto params = ZSTD_getParams(1, kData.size(), kPlainDict.size());
params.cParams.windowLog = 17;
auto cdict = createCDict(kPlainDict, params);
auto zcs = createCStream(params.cParams, *cdict, kData.size());
auto const compressed = compress(*zcs, kData);
auto const contentSize =
ZSTD_findDecompressedSize(compressed.data(), compressed.size());
EXPECT_ANY_THROW(decompress(*createDStream(), compressed, kData.size()));
auto ddict = createDDict(kPlainDict);
auto zds = createDStream(1 << 17, ddict.get());
auto const decompressed = decompress(*zds, compressed, kData.size());
EXPECT_EQ(kData, decompressed);
}
TEST(Stream, ZstdDict) {
auto params = ZSTD_getParams(1, 0, 0);
params.cParams.windowLog = 17;
auto cdict = createCDict(kZstdDict, 1);
auto zcs = createCStream(params.cParams, *cdict);
auto const compressed = compress(*zcs, kData);
EXPECT_ANY_THROW(decompress(*createDStream(), compressed, kData.size()));
auto ddict = createDDict(kZstdDict);
auto zds = createDStream(1 << 17, ddict.get());
auto const decompressed = decompress(*zds, compressed, kData.size());
EXPECT_EQ(kData, decompressed);
}
TEST(Stream, ResetCStream) {
auto zcs = createCStream(1);
auto zds = createDStream();
{
auto const compressed = compress(*zcs, kData);
auto const decompressed = decompress(*zds, compressed, kData.size());
EXPECT_EQ(kData, decompressed);
}
{
ZSTD_resetCStream(zcs.get(), 0);
auto const compressed = compress(*zcs, kData);
auto const decompressed = decompress(*zds, compressed, kData.size());
EXPECT_EQ(kData, decompressed);
}
}
TEST(Stream, ResetDStream) {
auto zcs = createCStream(1);
auto zds = createDStream();
auto const compressed = compress(*zcs, kData);
EXPECT_ANY_THROW(decompress(*zds, kData, kData.size()));
EXPECT_ANY_THROW(decompress(*zds, compressed, kData.size()));
ZSTD_resetDStream(zds.get());
auto const decompressed = decompress(*zds, compressed, kData.size());
EXPECT_EQ(kData, decompressed);
}
TEST(Stream, Flush) {
auto zcs = createCStream(1);
auto zds = createDStream();
std::string compressed;
{
compressed.resize(ZSTD_compressBound(kData.size()));
ZSTD_inBuffer in = {kData.data(), kData.size(), 0};
ZSTD_outBuffer out = {&compressed[0], compressed.size(), 0};
while (in.pos != in.size) {
size_t const rc = ZSTD_compressStream(zcs.get(), &out, &in);
if (ZSTD_isError(rc)) {
throw std::runtime_error{"compress stream failed"};
}
}
EXPECT_EQ(0, out.pos);
size_t const rc = ZSTD_flushStream(zcs.get(), &out);
if (rc != 0) {
throw std::runtime_error{"compress end failed"};
}
compressed.resize(out.pos);
EXPECT_LT(0, out.pos);
}
std::string decompressed;
{
decompressed.resize(kData.size());
ZSTD_inBuffer in = {compressed.data(), compressed.size(), 0};
ZSTD_outBuffer out = {&decompressed[0], decompressed.size(), 0};
while (in.pos != in.size) {
size_t const rc = ZSTD_decompressStream(zds.get(), &out, &in);
if (ZSTD_isError(rc)) {
throw std::runtime_error{"decompress stream failed"};
}
}
}
EXPECT_EQ(kData, decompressed);
}
TEST(Stream, DStreamLevelIncrease) {
auto zds = createDStream();
for (int level = 1; level <= 22; ++level) {
auto zcs = createCStream(level);
auto compressed = compress(*zcs, kData);
ZSTD_resetDStream(zds.get());
auto const decompressed = decompress(*zds, compressed, kData.size());
EXPECT_EQ(kData, decompressed);
}
}
#define TEST_SYMBOL(symbol) \
do { \
extern void *__##symbol; \
EXPECT_NE((void *)0, __##symbol); \
} while (0)
TEST(API, Symbols) {
TEST_SYMBOL(ZSTD_CCtxWorkspaceBound);
TEST_SYMBOL(ZSTD_initCCtx);
TEST_SYMBOL(ZSTD_compressCCtx);
TEST_SYMBOL(ZSTD_compress_usingDict);
TEST_SYMBOL(ZSTD_DCtxWorkspaceBound);
TEST_SYMBOL(ZSTD_initDCtx);
TEST_SYMBOL(ZSTD_decompressDCtx);
TEST_SYMBOL(ZSTD_decompress_usingDict);
TEST_SYMBOL(ZSTD_CDictWorkspaceBound);
TEST_SYMBOL(ZSTD_initCDict);
TEST_SYMBOL(ZSTD_compress_usingCDict);
TEST_SYMBOL(ZSTD_DDictWorkspaceBound);
TEST_SYMBOL(ZSTD_initDDict);
TEST_SYMBOL(ZSTD_decompress_usingDDict);
TEST_SYMBOL(ZSTD_CStreamWorkspaceBound);
TEST_SYMBOL(ZSTD_initCStream);
TEST_SYMBOL(ZSTD_initCStream_usingCDict);
TEST_SYMBOL(ZSTD_resetCStream);
TEST_SYMBOL(ZSTD_compressStream);
TEST_SYMBOL(ZSTD_flushStream);
TEST_SYMBOL(ZSTD_endStream);
TEST_SYMBOL(ZSTD_CStreamInSize);
TEST_SYMBOL(ZSTD_CStreamOutSize);
TEST_SYMBOL(ZSTD_DStreamWorkspaceBound);
TEST_SYMBOL(ZSTD_initDStream);
TEST_SYMBOL(ZSTD_initDStream_usingDDict);
TEST_SYMBOL(ZSTD_resetDStream);
TEST_SYMBOL(ZSTD_decompressStream);
TEST_SYMBOL(ZSTD_DStreamInSize);
TEST_SYMBOL(ZSTD_DStreamOutSize);
TEST_SYMBOL(ZSTD_findFrameCompressedSize);
TEST_SYMBOL(ZSTD_getFrameContentSize);
TEST_SYMBOL(ZSTD_findDecompressedSize);
TEST_SYMBOL(ZSTD_getCParams);
TEST_SYMBOL(ZSTD_getParams);
TEST_SYMBOL(ZSTD_checkCParams);
TEST_SYMBOL(ZSTD_adjustCParams);
TEST_SYMBOL(ZSTD_isFrame);
TEST_SYMBOL(ZSTD_getDictID_fromDict);
TEST_SYMBOL(ZSTD_getDictID_fromDDict);
TEST_SYMBOL(ZSTD_getDictID_fromFrame);
TEST_SYMBOL(ZSTD_compressBegin);
TEST_SYMBOL(ZSTD_compressBegin_usingDict);
TEST_SYMBOL(ZSTD_compressBegin_advanced);
TEST_SYMBOL(ZSTD_copyCCtx);
TEST_SYMBOL(ZSTD_compressBegin_usingCDict);
TEST_SYMBOL(ZSTD_compressContinue);
TEST_SYMBOL(ZSTD_compressEnd);
TEST_SYMBOL(ZSTD_getFrameParams);
TEST_SYMBOL(ZSTD_decompressBegin);
TEST_SYMBOL(ZSTD_decompressBegin_usingDict);
TEST_SYMBOL(ZSTD_copyDCtx);
TEST_SYMBOL(ZSTD_nextSrcSizeToDecompress);
TEST_SYMBOL(ZSTD_decompressContinue);
TEST_SYMBOL(ZSTD_nextInputType);
TEST_SYMBOL(ZSTD_getBlockSizeMax);
TEST_SYMBOL(ZSTD_compressBlock);
TEST_SYMBOL(ZSTD_decompressBlock);
TEST_SYMBOL(ZSTD_insertBlock);
}