src/test/amount_tests.cpp

   1 // Copyright (c) 2016 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 "amount.h"
   6 #include "test/test_bitcoin.h"
   7
   8 #include <boost/test/unit_test.hpp>
   9
  10 BOOST_FIXTURE_TEST_SUITE(amount_tests, BasicTestingSetup)
  11
  12 BOOST_AUTO_TEST_CASE(GetFeeTest)
  13 {
  14     CFeeRate feeRate;
  15
  16     feeRate = CFeeRate(0);
  17     // Must always return 0
  18     BOOST_CHECK_EQUAL(feeRate.GetFee(0), 0);
  19     BOOST_CHECK_EQUAL(feeRate.GetFee(1e5), 0);
  20
  21     feeRate = CFeeRate(1000);
  22     // Must always just return the arg
  23     BOOST_CHECK_EQUAL(feeRate.GetFee(0), 0);
  24     BOOST_CHECK_EQUAL(feeRate.GetFee(1), 1);
  25     BOOST_CHECK_EQUAL(feeRate.GetFee(121), 121);
  26     BOOST_CHECK_EQUAL(feeRate.GetFee(999), 999);
  27     BOOST_CHECK_EQUAL(feeRate.GetFee(1e3), 1e3);
  28     BOOST_CHECK_EQUAL(feeRate.GetFee(9e3), 9e3);
  29
  30     feeRate = CFeeRate(-1000);
  31     // Must always just return -1 * arg
  32     BOOST_CHECK_EQUAL(feeRate.GetFee(0), 0);
  33     BOOST_CHECK_EQUAL(feeRate.GetFee(1), -1);
  34     BOOST_CHECK_EQUAL(feeRate.GetFee(121), -121);
  35     BOOST_CHECK_EQUAL(feeRate.GetFee(999), -999);
  36     BOOST_CHECK_EQUAL(feeRate.GetFee(1e3), -1e3);
  37     BOOST_CHECK_EQUAL(feeRate.GetFee(9e3), -9e3);
  38
  39     feeRate = CFeeRate(123);
  40     // Truncates the result, if not integer
  41     BOOST_CHECK_EQUAL(feeRate.GetFee(0), 0);
  42     BOOST_CHECK_EQUAL(feeRate.GetFee(8), 1); // Special case: returns 1 instead of 0
  43     BOOST_CHECK_EQUAL(feeRate.GetFee(9), 1);
  44     BOOST_CHECK_EQUAL(feeRate.GetFee(121), 14);
  45     BOOST_CHECK_EQUAL(feeRate.GetFee(122), 15);
  46     BOOST_CHECK_EQUAL(feeRate.GetFee(999), 122);
  47     BOOST_CHECK_EQUAL(feeRate.GetFee(1e3), 123);
  48     BOOST_CHECK_EQUAL(feeRate.GetFee(9e3), 1107);
  49
  50     feeRate = CFeeRate(-123);
  51     // Truncates the result, if not integer
  52     BOOST_CHECK_EQUAL(feeRate.GetFee(0), 0);
  53     BOOST_CHECK_EQUAL(feeRate.GetFee(8), -1); // Special case: returns -1 instead of 0
  54     BOOST_CHECK_EQUAL(feeRate.GetFee(9), -1);
  55
  56     // Check full constructor
  57     // default value
  58     BOOST_CHECK(CFeeRate(CAmount(-1), 1000) == CFeeRate(-1));
  59     BOOST_CHECK(CFeeRate(CAmount(0), 1000) == CFeeRate(0));
  60     BOOST_CHECK(CFeeRate(CAmount(1), 1000) == CFeeRate(1));
  61     // lost precision (can only resolve satoshis per kB)
  62     BOOST_CHECK(CFeeRate(CAmount(1), 1001) == CFeeRate(0));
  63     BOOST_CHECK(CFeeRate(CAmount(2), 1001) == CFeeRate(1));
  64     // some more integer checks
  65     BOOST_CHECK(CFeeRate(CAmount(26), 789) == CFeeRate(32));
  66     BOOST_CHECK(CFeeRate(CAmount(27), 789) == CFeeRate(34));
  67     // Maximum size in bytes, should not crash
  68     CFeeRate(MAX_MONEY, std::numeric_limits<size_t>::max() >> 1).GetFeePerK();
  69 }
  70
  71 BOOST_AUTO_TEST_SUITE_END()