src/test/compress_tests.cpp

   1 // Copyright (c) 2012-2015 The Bitcoin Core developers
   2 // Distributed under the MIT software license, see the accompanying
   3 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
   4
   5 #include "compressor.h"
   6 #include "util.h"
   7 #include "test/test_bitcoin.h"
   8
   9 #include <stdint.h>
  10
  11 #include <boost/test/unit_test.hpp>
  12
  13 // amounts 0.00000001 .. 0.00100000
  14 #define NUM_MULTIPLES_UNIT 100000
  15
  16 // amounts 0.01 .. 100.00
  17 #define NUM_MULTIPLES_CENT 10000
  18
  19 // amounts 1 .. 10000
  20 #define NUM_MULTIPLES_1BTC 10000
  21
  22 // amounts 50 .. 21000000
  23 #define NUM_MULTIPLES_50BTC 420000
  24
  25 BOOST_FIXTURE_TEST_SUITE(compress_tests, BasicTestingSetup)
  26
  27 bool static TestEncode(uint64_t in) {
  28     return in == CTxOutCompressor::DecompressAmount(CTxOutCompressor::CompressAmount(in));
  29 }
  30
  31 bool static TestDecode(uint64_t in) {
  32     return in == CTxOutCompressor::CompressAmount(CTxOutCompressor::DecompressAmount(in));
  33 }
  34
  35 bool static TestPair(uint64_t dec, uint64_t enc) {
  36     return CTxOutCompressor::CompressAmount(dec) == enc &&
  37            CTxOutCompressor::DecompressAmount(enc) == dec;
  38 }
  39
  40 BOOST_AUTO_TEST_CASE(compress_amounts)
  41 {
  42     BOOST_CHECK(TestPair(            0,       0x0));
  43     BOOST_CHECK(TestPair(            1,       0x1));
  44     BOOST_CHECK(TestPair(         CENT,       0x7));
  45     BOOST_CHECK(TestPair(         COIN,       0x9));
  46     BOOST_CHECK(TestPair(      50*COIN,      0x32));
  47     BOOST_CHECK(TestPair(21000000*COIN, 0x1406f40));
  48
  49     for (uint64_t i = 1; i <= NUM_MULTIPLES_UNIT; i++)
  50         BOOST_CHECK(TestEncode(i));
  51
  52     for (uint64_t i = 1; i <= NUM_MULTIPLES_CENT; i++)
  53         BOOST_CHECK(TestEncode(i * CENT));
  54
  55     for (uint64_t i = 1; i <= NUM_MULTIPLES_1BTC; i++)
  56         BOOST_CHECK(TestEncode(i * COIN));
  57
  58     for (uint64_t i = 1; i <= NUM_MULTIPLES_50BTC; i++)
  59         BOOST_CHECK(TestEncode(i * 50 * COIN));
  60
  61     for (uint64_t i = 0; i < 100000; i++)
  62         BOOST_CHECK(TestDecode(i));
  63 }
  64
  65 BOOST_AUTO_TEST_SUITE_END()