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 "policy/feerate.h"
   7 #include "test/test_bitcoin.h"
   8
   9 #include <boost/test/unit_test.hpp>
  10
  11 BOOST_FIXTURE_TEST_SUITE(amount_tests, BasicTestingSetup)
  12
  13 BOOST_AUTO_TEST_CASE(MoneyRangeTest)
  14 {
  15     BOOST_CHECK_EQUAL(MoneyRange(CAmount(-1)), false);
  16     BOOST_CHECK_EQUAL(MoneyRange(MAX_MONEY + CAmount(1)), false);
  17     BOOST_CHECK_EQUAL(MoneyRange(CAmount(1)), true);
  18 }
  19
  20 BOOST_AUTO_TEST_CASE(GetFeeTest)
  21 {
  22     CFeeRate feeRate, altFeeRate;
  23
  24     feeRate = CFeeRate(0);
  25     // Must always return 0
  26     BOOST_CHECK_EQUAL(feeRate.GetFee(0), 0);
  27     BOOST_CHECK_EQUAL(feeRate.GetFee(1e5), 0);
  28
  29     feeRate = CFeeRate(1000);
  30     // Must always just return the arg
  31     BOOST_CHECK_EQUAL(feeRate.GetFee(0), 0);
  32     BOOST_CHECK_EQUAL(feeRate.GetFee(1), 1);
  33     BOOST_CHECK_EQUAL(feeRate.GetFee(121), 121);
  34     BOOST_CHECK_EQUAL(feeRate.GetFee(999), 999);
  35     BOOST_CHECK_EQUAL(feeRate.GetFee(1e3), 1e3);
  36     BOOST_CHECK_EQUAL(feeRate.GetFee(9e3), 9e3);
  37
  38     feeRate = CFeeRate(-1000);
  39     // Must always just return -1 * arg
  40     BOOST_CHECK_EQUAL(feeRate.GetFee(0), 0);
  41     BOOST_CHECK_EQUAL(feeRate.GetFee(1), -1);
  42     BOOST_CHECK_EQUAL(feeRate.GetFee(121), -121);
  43     BOOST_CHECK_EQUAL(feeRate.GetFee(999), -999);
  44     BOOST_CHECK_EQUAL(feeRate.GetFee(1e3), -1e3);
  45     BOOST_CHECK_EQUAL(feeRate.GetFee(9e3), -9e3);
  46
  47     feeRate = CFeeRate(123);
  48     // Truncates the result, if not integer
  49     BOOST_CHECK_EQUAL(feeRate.GetFee(0), 0);
  50     BOOST_CHECK_EQUAL(feeRate.GetFee(8), 1); // Special case: returns 1 instead of 0
  51     BOOST_CHECK_EQUAL(feeRate.GetFee(9), 1);
  52     BOOST_CHECK_EQUAL(feeRate.GetFee(121), 14);
  53     BOOST_CHECK_EQUAL(feeRate.GetFee(122), 15);
  54     BOOST_CHECK_EQUAL(feeRate.GetFee(999), 122);
  55     BOOST_CHECK_EQUAL(feeRate.GetFee(1e3), 123);
  56     BOOST_CHECK_EQUAL(feeRate.GetFee(9e3), 1107);
  57
  58     feeRate = CFeeRate(-123);
  59     // Truncates the result, if not integer
  60     BOOST_CHECK_EQUAL(feeRate.GetFee(0), 0);
  61     BOOST_CHECK_EQUAL(feeRate.GetFee(8), -1); // Special case: returns -1 instead of 0
  62     BOOST_CHECK_EQUAL(feeRate.GetFee(9), -1);
  63
  64     // check alternate constructor
  65     feeRate = CFeeRate(1000);
  66     altFeeRate = CFeeRate(feeRate);
  67     BOOST_CHECK_EQUAL(feeRate.GetFee(100), altFeeRate.GetFee(100));
  68
  69     // Check full constructor
  70     // default value
  71     BOOST_CHECK(CFeeRate(CAmount(-1), 1000) == CFeeRate(-1));
  72     BOOST_CHECK(CFeeRate(CAmount(0), 1000) == CFeeRate(0));
  73     BOOST_CHECK(CFeeRate(CAmount(1), 1000) == CFeeRate(1));
  74     // lost precision (can only resolve satoshis per kB)
  75     BOOST_CHECK(CFeeRate(CAmount(1), 1001) == CFeeRate(0));
  76     BOOST_CHECK(CFeeRate(CAmount(2), 1001) == CFeeRate(1));
  77     // some more integer checks
  78     BOOST_CHECK(CFeeRate(CAmount(26), 789) == CFeeRate(32));
  79     BOOST_CHECK(CFeeRate(CAmount(27), 789) == CFeeRate(34));
  80     // Maximum size in bytes, should not crash
  81     CFeeRate(MAX_MONEY, std::numeric_limits<size_t>::max() >> 1).GetFeePerK();
  82 }
  83
  84 BOOST_AUTO_TEST_CASE(BinaryOperatorTest)
  85 {
  86     CFeeRate a, b;
  87     a = CFeeRate(1);
  88     b = CFeeRate(2);
  89     BOOST_CHECK(a < b);
  90     BOOST_CHECK(b > a);
  91     BOOST_CHECK(a == a);
  92     BOOST_CHECK(a <= b);
  93     BOOST_CHECK(a <= a);
  94     BOOST_CHECK(b >= a);
  95     BOOST_CHECK(b >= b);
  96     // a should be 0.00000002 BTC/kB now
  97     a += a;
  98     BOOST_CHECK(a == b);
  99 }
 100
 101 BOOST_AUTO_TEST_CASE(ToStringTest)
 102 {
 103     CFeeRate feeRate;
 104     feeRate = CFeeRate(1);
 105     BOOST_CHECK_EQUAL(feeRate.ToString(), "0.00000001 BTC/kB");
 106 }
 107
 108 BOOST_AUTO_TEST_SUITE_END()