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/*
* Copyright (C) 2020 Veloman Yunkan
*
* 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 2 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* is provided AS IS, WITHOUT ANY WARRANTY; without even the implied
* warranty of MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, and
* NON-INFRINGEMENT. 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 St, Fifth Floor, Boston, MA 02110-1301 USA
*
*/
#include "istreamreader.h"
#include "endian_tools.h"
#include "gtest/gtest.h"
namespace
{
using namespace zim;
////////////////////////////////////////////////////////////////////////////////
// IDataStream
////////////////////////////////////////////////////////////////////////////////
// Implement the IStreamReader interface in the simplest way
class InfiniteZeroStream : public IStreamReader
{
void readImpl(char* buf, zim::zsize_t nbytes) { memset(buf, 0, nbytes.v); }
};
// ... and test that it compiles and works as intended
TEST(IStreamReader, read)
{
InfiniteZeroStream izs;
IStreamReader& ids = izs;
EXPECT_EQ(0, ids.read<int>());
EXPECT_EQ(0L, ids.read<long>());
// zim::fromLittleEndian() handles only integer types
// EXPECT_EQ(0.0, ids.read<double>());
}
TEST(IStreamReader, sub_reader)
{
const size_t N = 16;
const char zerobuf[N] = {0};
InfiniteZeroStream izs;
IStreamReader& ids = izs;
auto subReader = ids.sub_reader(zim::zsize_t(N));
EXPECT_EQ(subReader->size().v, N);
auto buffer = subReader->get_buffer(zim::offset_t(0), zim::zsize_t(N));
EXPECT_EQ(buffer.size().v, N);
EXPECT_EQ(0, memcmp(buffer.data(), zerobuf, N));
}
} // unnamed namespace
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