dietbitcoin/src/test/compress_tests.cpp at master · citrixrep/dietbitcoin · GitHub

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// Copyright (c) 2012-2015 The Bitcoin Core developers
// Distributed under the MIT software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.

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

#include <stdint.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_1DDX 10000

// amounts 50 .. 21000000
#define NUM_MULTIPLES_50DDX 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_1DDX; i++)
        BOOST_CHECK(TestEncode(i * COIN));

    for (uint64_t i = 1; i <= NUM_MULTIPLES_50DDX; i++)
        BOOST_CHECK(TestEncode(i * 50 * COIN));

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

BOOST_AUTO_TEST_SUITE_END()