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// Copyright (C) 2019-2022 Joel Rosdahl and other contributors
//
// See doc/AUTHORS.adoc for a complete list of contributors.
//
// This program is free software; you can redistribute it and/or modify it
// under the terms of the GNU General Public License as published by the Free
// Software Foundation; either version 3 of the License, or (at your option)
// any later version.
//
// This program is distributed in the hope that it will be useful, but WITHOUT
// ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
// FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
// more details.
//
// You should have received a copy of the GNU General Public License along with
// this program; if not, write to the Free Software Foundation, Inc., 51
// Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
#include <TestUtil.hpp>
#include <util/Bytes.hpp>
#include <util/zstd.hpp>
#include <third_party/doctest.h>
#include <string>
using TestUtil::TestContext;
const util::Bytes compressed_ab{
0x28, 0xb5, 0x2f, 0xfd, 0x20, 0x02, 0x11, 0x00, 0x00, 0x61, 0x62};
TEST_CASE("util::zstd_compress")
{
TestContext test_context;
util::Bytes output{'x'};
auto result = util::zstd_compress(util::Bytes{'a', 'b'}, output, 1);
CHECK(result);
CHECK(output.size() == 12);
util::Bytes expected{'x'};
expected.insert(expected.end(), compressed_ab.begin(), compressed_ab.end());
CHECK(output == expected);
}
TEST_CASE("util::zstd_decompress")
{
TestContext test_context;
util::Bytes input = compressed_ab;
util::Bytes output{'x'};
auto result = util::zstd_decompress(input, output, 2);
CHECK(result);
CHECK(output == util::Bytes{'x', 'a', 'b'});
}
TEST_CASE("ZSTD roundtrip")
{
TestContext test_context;
const util::Bytes data{0, 1, 2, 3, 4, 5, 6, 7, 8, 9};
const size_t copies = 10000;
util::Bytes original_input;
for (size_t i = 0; i < copies; i++) {
original_input.insert(original_input.end(), data.begin(), data.end());
}
util::Bytes output;
auto result = util::zstd_compress(original_input, output, 1);
CHECK(result);
CHECK(output.size() < 100);
util::Bytes decompressed_input;
result =
util::zstd_decompress(output, decompressed_input, copies * data.size());
CHECK(result);
CHECK(decompressed_input == original_input);
}
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