thehub/testing/test/compress_tests.cpp

/*
 * This file is part of the Flowee project
 * Copyright (C) 2012-2015 The Bitcoin Core developers
 *
 * 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, see <http://www.gnu.org/licenses/>.
 */

#include "compressor.h"
#include "util.h"
#include "test/test_bitcoin.h"

#include <boost/test/unit_test.hpp>

// amounts 0.00000001 .. 0.00100000
#define NUM_MULTIPLES_UNIT 100000

// amounts 0.01 .. 100.00
#define NUM_MULTIPLES_CENT 10000

// amounts 1 .. 10000
#define NUM_MULTIPLES_1BTC 10000

// amounts 50 .. 21000000
#define NUM_MULTIPLES_50BTC 420000

BOOST_FIXTURE_TEST_SUITE(compress_tests, BasicTestingSetup)

bool static TestEncode(uint64_t in) {
    return in == CTxOutCompressor::DecompressAmount(CTxOutCompressor::CompressAmount(in));
}

bool static TestDecode(uint64_t in) {
    return in == CTxOutCompressor::CompressAmount(CTxOutCompressor::DecompressAmount(in));
}

bool static TestPair(uint64_t dec, uint64_t enc) {
    return CTxOutCompressor::CompressAmount(dec) == enc &&
           CTxOutCompressor::DecompressAmount(enc) == dec;
}

BOOST_AUTO_TEST_CASE(compress_amounts)
{
    BOOST_CHECK(TestPair(            0,       0x0));
    BOOST_CHECK(TestPair(            1,       0x1));
    BOOST_CHECK(TestPair(         CENT,       0x7));
    BOOST_CHECK(TestPair(         COIN,       0x9));
    BOOST_CHECK(TestPair(      50*COIN,      0x32));
    BOOST_CHECK(TestPair(21000000*COIN, 0x1406f40));

    for (uint64_t i = 1; i <= NUM_MULTIPLES_UNIT; i++)
        BOOST_CHECK(TestEncode(i));

    for (uint64_t i = 1; i <= NUM_MULTIPLES_CENT; i++)
        BOOST_CHECK(TestEncode(i * CENT));

    for (uint64_t i = 1; i <= NUM_MULTIPLES_1BTC; i++)
        BOOST_CHECK(TestEncode(i * COIN));

    for (uint64_t i = 1; i <= NUM_MULTIPLES_50BTC; i++)
        BOOST_CHECK(TestEncode(i * 50 * COIN));

    for (uint64_t i = 0; i < 100000; i++)
        BOOST_CHECK(TestDecode(i));
}

BOOST_AUTO_TEST_SUITE_END()