compress_tests.cpp

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// Copyright (c) 2012-2013 The Bitcoin Core developers
// Distributed under the MIT/X11 software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
#include "compressor.h"
#include "util/system.h"
#include "test/test_pivx.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_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 == DecompressAmount(CompressAmount(in));
}
 
bool static TestDecode(uint64_t in) {
    return in == CompressAmount(DecompressAmount(in));
}
 
bool static TestPair(uint64_t dec, uint64_t enc) {
    return CompressAmount(dec) == enc &&
           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()