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/*
* libnbt++ - A library for the Minecraft Named Binary Tag format.
* Copyright (C) 2013, 2015 ljfa-ag
*
* This file is part of libnbt++.
*
* libnbt++ is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* libnbt++ 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 Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with libnbt++. If not, see <http://www.gnu.org/licenses/>.
*/
#include <cxxtest/TestSuite.h>
#include "io/izlibstream.h"
#include "io/ozlibstream.h"
#include "io/zlib_error.h"
#include <fstream>
#include <sstream>
using namespace zlib;
class zlibstream_test : public CxxTest::TestSuite
{
private:
std::string bigtest;
public:
zlibstream_test()
{
std::ifstream bigtest_f("bigtest_uncompr", std::ios::binary);
std::stringbuf bigtest_b;
bigtest_f >> &bigtest_b;
bigtest = bigtest_b.str();
if(!bigtest_f || bigtest.size() == 0)
throw std::runtime_error("Could not read bigtest_uncompr file");
}
void test_inflate_gzip()
{
std::ifstream gzip_in("bigtest.nbt", std::ios::binary);
TS_ASSERT(gzip_in);
std::stringbuf data;
//Small buffer so not all fits at once (the compressed file is 561 bytes)
{
izlibstream igzs(gzip_in, 256);
igzs.exceptions(std::ios::failbit | std::ios::badbit);
TS_ASSERT(igzs.good());
TS_ASSERT_THROWS_NOTHING(igzs >> &data);
TS_ASSERT(igzs);
TS_ASSERT(igzs.eof());
TS_ASSERT_EQUALS(data.str(), bigtest);
}
//Clear and reuse buffers
data.str("");
gzip_in.clear();
gzip_in.seekg(0);
//Now try the same with larger buffer (but not large enough for all output, uncompressed size 1561 bytes)
{
izlibstream igzs(gzip_in, 1000);
igzs.exceptions(std::ios::failbit | std::ios::badbit);
TS_ASSERT(igzs.good());
TS_ASSERT_THROWS_NOTHING(igzs >> &data);
TS_ASSERT(igzs);
TS_ASSERT(igzs.eof());
TS_ASSERT_EQUALS(data.str(), bigtest);
}
data.str("");
gzip_in.clear();
gzip_in.seekg(0);
//Now with large buffer
{
izlibstream igzs(gzip_in, 4000);
igzs.exceptions(std::ios::failbit | std::ios::badbit);
TS_ASSERT(igzs.good());
TS_ASSERT_THROWS_NOTHING(igzs >> &data);
TS_ASSERT(igzs);
TS_ASSERT(igzs.eof());
TS_ASSERT_EQUALS(data.str(), bigtest);
}
}
void test_inflate_zlib()
{
std::ifstream zlib_in("bigtest.zlib", std::ios::binary);
TS_ASSERT(zlib_in);
std::stringbuf data;
izlibstream izls(zlib_in, 256);
izls.exceptions(std::ios::failbit | std::ios::badbit);
TS_ASSERT(izls.good());
TS_ASSERT_THROWS_NOTHING(izls >> &data);
TS_ASSERT(izls);
TS_ASSERT(izls.eof());
TS_ASSERT_EQUALS(data.str(), bigtest);
}
void test_inflate_corrupt()
{
std::ifstream gzip_in("bigtest_corrupt.nbt", std::ios::binary);
TS_ASSERT(gzip_in);
std::vector<char> buf(bigtest.size());
{
izlibstream igzs(gzip_in);
igzs.exceptions(std::ios::failbit | std::ios::badbit);
TS_ASSERT_THROWS(igzs.read(buf.data(), buf.size()), zlib_error);
TS_ASSERT(igzs.bad());
}
gzip_in.close();
gzip_in.clear();
gzip_in.open("bigtest_eof.nbt", std::ios::binary);
TS_ASSERT(gzip_in);
{
izlibstream igzs(gzip_in);
igzs.exceptions(std::ios::failbit | std::ios::badbit);
TS_ASSERT_THROWS(igzs.read(buf.data(), buf.size()), zlib_error);
TS_ASSERT(igzs.bad());
}
}
void test_deflate_zlib()
{
//Here we assume that inflating works and has already been tested
std::stringstream str;
std::stringbuf output;
//Small buffer
{
ozlibstream ozls(str, -1, false, 256);
ozls.exceptions(std::ios::failbit | std::ios::badbit);
TS_ASSERT_THROWS_NOTHING(ozls << bigtest);
TS_ASSERT(ozls.good());
TS_ASSERT_THROWS_NOTHING(ozls.close());
TS_ASSERT(ozls.good());
}
TS_ASSERT(str.good());
{
izlibstream izls(str);
TS_ASSERT_THROWS_NOTHING(izls >> &output);
TS_ASSERT(izls);
}
TS_ASSERT_EQUALS(output.str(), bigtest);
str.clear(); str.str("");
output.str("");
//Medium sized buffer
//Write first half, then flush and write second half
{
ozlibstream ozls(str, 9, false, 512);
ozls.exceptions(std::ios::failbit | std::ios::badbit);
std::string half1 = bigtest.substr(0, bigtest.size()/2);
std::string half2 = bigtest.substr(bigtest.size()/2);
TS_ASSERT_THROWS_NOTHING(ozls << half1 << std::flush << half2);
TS_ASSERT(ozls.good());
TS_ASSERT_THROWS_NOTHING(ozls.close());
TS_ASSERT(ozls.good());
}
TS_ASSERT(str.good());
{
izlibstream izls(str);
izls >> &output;
TS_ASSERT(izls);
}
TS_ASSERT_EQUALS(output.str(), bigtest);
str.clear(); str.str("");
output.str("");
//Large buffer
{
ozlibstream ozls(str, 1, false, 4000);
ozls.exceptions(std::ios::failbit | std::ios::badbit);
TS_ASSERT_THROWS_NOTHING(ozls << bigtest);
TS_ASSERT(ozls.good());
TS_ASSERT_THROWS_NOTHING(ozls.close());
TS_ASSERT_THROWS_NOTHING(ozls.close()); //closing twice shouldn't be a problem
TS_ASSERT(ozls.good());
}
TS_ASSERT(str.good());
{
izlibstream izls(str);
izls >> &output;
TS_ASSERT(izls);
}
TS_ASSERT_EQUALS(output.str(), bigtest);
}
void test_deflate_gzip()
{
std::stringstream str;
std::stringbuf output;
{
ozlibstream ozls(str, -1, true);
ozls.exceptions(std::ios::failbit | std::ios::badbit);
TS_ASSERT_THROWS_NOTHING(ozls << bigtest);
TS_ASSERT(ozls.good());
TS_ASSERT_THROWS_NOTHING(ozls.close());
TS_ASSERT(ozls.good());
}
TS_ASSERT(str.good());
{
izlibstream izls(str);
izls >> &output;
TS_ASSERT(izls);
}
TS_ASSERT_EQUALS(output.str(), bigtest);
}
void test_deflate_closed()
{
std::stringstream str;
{
ozlibstream ozls(str);
ozls.exceptions(std::ios::failbit | std::ios::badbit);
TS_ASSERT_THROWS_NOTHING(ozls << bigtest);
TS_ASSERT_THROWS_NOTHING(ozls.close());
TS_ASSERT_THROWS_NOTHING(ozls << "foo");
TS_ASSERT_THROWS_ANYTHING(ozls.close());
TS_ASSERT(ozls.bad());
TS_ASSERT(!str);
}
str.clear();
str.seekp(0);
{
ozlibstream ozls(str);
//this time without exceptions
TS_ASSERT_THROWS_NOTHING(ozls << bigtest);
TS_ASSERT_THROWS_NOTHING(ozls.close());
TS_ASSERT_THROWS_NOTHING(ozls << "foo" << std::flush);
TS_ASSERT(ozls.bad());
TS_ASSERT_THROWS_NOTHING(ozls.close());
TS_ASSERT(ozls.bad());
TS_ASSERT(!str);
}
}
};
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