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/*
* Copyright (c) 2016-present, Facebook, Inc.
* All rights reserved.
*
* This source code is licensed under both the BSD-style license (found in the
* LICENSE file in the root directory of this source tree) and the GPLv2 (found
* in the COPYING file in the root directory of this source tree).
*/
#include "Pzstd.h"
extern "C" {
#include "datagen.h"
}
#include "test/RoundTrip.h"
#include "utils/ScopeGuard.h"
#include <cstddef>
#include <cstdio>
#include <gtest/gtest.h>
#include <memory>
#include <random>
using namespace std;
using namespace pzstd;
TEST(Pzstd, SmallSizes) {
unsigned seed = std::random_device{}();
std::fprintf(stderr, "Pzstd.SmallSizes seed: %u\n", seed);
std::mt19937 gen(seed);
for (unsigned len = 1; len < 256; ++len) {
if (len % 16 == 0) {
std::fprintf(stderr, "%u / 16\n", len / 16);
}
std::string inputFile = std::tmpnam(nullptr);
auto guard = makeScopeGuard([&] { std::remove(inputFile.c_str()); });
{
static uint8_t buf[256];
RDG_genBuffer(buf, len, 0.5, 0.0, gen());
auto fd = std::fopen(inputFile.c_str(), "wb");
auto written = std::fwrite(buf, 1, len, fd);
std::fclose(fd);
ASSERT_EQ(written, len);
}
for (unsigned numThreads = 1; numThreads <= 2; ++numThreads) {
for (unsigned level = 1; level <= 4; level *= 4) {
auto errorGuard = makeScopeGuard([&] {
std::fprintf(stderr, "# threads: %u\n", numThreads);
std::fprintf(stderr, "compression level: %u\n", level);
});
Options options;
options.overwrite = true;
options.inputFiles = {inputFile};
options.numThreads = numThreads;
options.compressionLevel = level;
options.verbosity = 1;
ASSERT_TRUE(roundTrip(options));
errorGuard.dismiss();
}
}
}
}
TEST(Pzstd, LargeSizes) {
unsigned seed = std::random_device{}();
std::fprintf(stderr, "Pzstd.LargeSizes seed: %u\n", seed);
std::mt19937 gen(seed);
for (unsigned len = 1 << 20; len <= (1 << 24); len *= 2) {
std::string inputFile = std::tmpnam(nullptr);
auto guard = makeScopeGuard([&] { std::remove(inputFile.c_str()); });
{
std::unique_ptr<uint8_t[]> buf(new uint8_t[len]);
RDG_genBuffer(buf.get(), len, 0.5, 0.0, gen());
auto fd = std::fopen(inputFile.c_str(), "wb");
auto written = std::fwrite(buf.get(), 1, len, fd);
std::fclose(fd);
ASSERT_EQ(written, len);
}
for (unsigned numThreads = 1; numThreads <= 16; numThreads *= 4) {
for (unsigned level = 1; level <= 4; level *= 4) {
auto errorGuard = makeScopeGuard([&] {
std::fprintf(stderr, "# threads: %u\n", numThreads);
std::fprintf(stderr, "compression level: %u\n", level);
});
Options options;
options.overwrite = true;
options.inputFiles = {inputFile};
options.numThreads = std::min(numThreads, options.numThreads);
options.compressionLevel = level;
options.verbosity = 1;
ASSERT_TRUE(roundTrip(options));
errorGuard.dismiss();
}
}
}
}
TEST(Pzstd, DISABLED_ExtremelyLargeSize) {
unsigned seed = std::random_device{}();
std::fprintf(stderr, "Pzstd.ExtremelyLargeSize seed: %u\n", seed);
std::mt19937 gen(seed);
std::string inputFile = std::tmpnam(nullptr);
auto guard = makeScopeGuard([&] { std::remove(inputFile.c_str()); });
{
// Write 4GB + 64 MB
constexpr size_t kLength = 1 << 26;
std::unique_ptr<uint8_t[]> buf(new uint8_t[kLength]);
auto fd = std::fopen(inputFile.c_str(), "wb");
auto closeGuard = makeScopeGuard([&] { std::fclose(fd); });
for (size_t i = 0; i < (1 << 6) + 1; ++i) {
RDG_genBuffer(buf.get(), kLength, 0.5, 0.0, gen());
auto written = std::fwrite(buf.get(), 1, kLength, fd);
if (written != kLength) {
std::fprintf(stderr, "Failed to write file, skipping test\n");
return;
}
}
}
Options options;
options.overwrite = true;
options.inputFiles = {inputFile};
options.compressionLevel = 1;
if (options.numThreads == 0) {
options.numThreads = 1;
}
ASSERT_TRUE(roundTrip(options));
}
TEST(Pzstd, ExtremelyCompressible) {
std::string inputFile = std::tmpnam(nullptr);
auto guard = makeScopeGuard([&] { std::remove(inputFile.c_str()); });
{
std::unique_ptr<uint8_t[]> buf(new uint8_t[10000]);
std::memset(buf.get(), 'a', 10000);
auto fd = std::fopen(inputFile.c_str(), "wb");
auto written = std::fwrite(buf.get(), 1, 10000, fd);
std::fclose(fd);
ASSERT_EQ(written, 10000);
}
Options options;
options.overwrite = true;
options.inputFiles = {inputFile};
options.numThreads = 1;
options.compressionLevel = 1;
ASSERT_TRUE(roundTrip(options));
}
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