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/**
* @file bitpack_test.cpp
* @author Adroit
* @date 2007-02
* @brief llstreamtools test cases.
*
* $LicenseInfo:firstyear=2007&license=viewerlgpl$
* Second Life Viewer Source Code
* Copyright (C) 2010, Linden Research, Inc.
*
* This library 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;
* version 2.1 of the License only.
*
* This library 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 this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
* Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA
* $/LicenseInfo$
*/
#include "linden_common.h"
#include "../bitpack.h"
#include "../test/lltut.h"
namespace tut
{
struct bit_pack
{
};
typedef test_group<bit_pack> bit_pack_t;
typedef bit_pack_t::object bit_pack_object_t;
tut::bit_pack_t tut_bit_pack("LLBitPack");
// pack -> unpack
template<> template<>
void bit_pack_object_t::test<1>()
{
U8 packbuffer[255];
U8 unpackbuffer[255];
int pack_bufsize = 0;
int unpack_bufsize = 0;
LLBitPack bitpack(packbuffer, 255);
char str[] = "SecondLife is a 3D virtual world";
int len = sizeof(str);
pack_bufsize = bitpack.bitPack((U8*) str, len*8);
pack_bufsize = bitpack.flushBitPack();
LLBitPack bitunpack(packbuffer, pack_bufsize*8);
unpack_bufsize = bitunpack.bitUnpack(unpackbuffer, len*8);
ensure("bitPack: unpack size should be same as string size prior to pack", len == unpack_bufsize);
ensure_memory_matches("str->bitPack->bitUnpack should be equal to string", str, len, unpackbuffer, unpack_bufsize);
}
// pack large, unpack in individual bytes
template<> template<>
void bit_pack_object_t::test<2>()
{
U8 packbuffer[255];
U8 unpackbuffer[255];
int pack_bufsize = 0;
int unpack_bufsize = 0;
LLBitPack bitpack(packbuffer, 255);
char str[] = "SecondLife";
int len = sizeof(str);
pack_bufsize = bitpack.bitPack((U8*) str, len*8);
pack_bufsize = bitpack.flushBitPack();
LLBitPack bitunpack(packbuffer, pack_bufsize*8);
unpack_bufsize = bitunpack.bitUnpack(&unpackbuffer[0], 8);
ensure("bitPack: individual unpack: 0", unpackbuffer[0] == (U8) str[0]);
unpack_bufsize = bitunpack.bitUnpack(&unpackbuffer[0], 8);
ensure("bitPack: individual unpack: 1", unpackbuffer[0] == (U8) str[1]);
unpack_bufsize = bitunpack.bitUnpack(&unpackbuffer[0], 8);
ensure("bitPack: individual unpack: 2", unpackbuffer[0] == (U8) str[2]);
unpack_bufsize = bitunpack.bitUnpack(&unpackbuffer[0], 8);
ensure("bitPack: individual unpack: 3", unpackbuffer[0] == (U8) str[3]);
unpack_bufsize = bitunpack.bitUnpack(&unpackbuffer[0], 8);
ensure("bitPack: individual unpack: 4", unpackbuffer[0] == (U8) str[4]);
unpack_bufsize = bitunpack.bitUnpack(&unpackbuffer[0], 8);
ensure("bitPack: individual unpack: 5", unpackbuffer[0] == (U8) str[5]);
unpack_bufsize = bitunpack.bitUnpack(unpackbuffer, 8*4); // Life
ensure_memory_matches("bitPack: 4 bytes unpack:", unpackbuffer, 4, str+6, 4);
ensure("keep compiler quiet", unpack_bufsize == unpack_bufsize);
}
// U32 packing
template<> template<>
void bit_pack_object_t::test<3>()
{
U8 packbuffer[255];
int pack_bufsize = 0;
LLBitPack bitpack(packbuffer, 255);
U32 num = 0x41fab67a;
pack_bufsize = bitpack.bitPack((U8*)&num, 8*sizeof(U32));
pack_bufsize = bitpack.flushBitPack();
LLBitPack bitunpack(packbuffer, pack_bufsize*8);
U32 res = 0;
// since packing and unpacking is done on same machine in the unit test run,
// endianness should not matter
bitunpack.bitUnpack((U8*) &res, sizeof(res)*8);
ensure("U32->bitPack->bitUnpack->U32 should be equal", num == res);
}
}
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