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author | Wladimir J. van der Laan <laanwj@gmail.com> | 2015-03-20 16:05:37 +0100 |
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committer | Wladimir J. van der Laan <laanwj@gmail.com> | 2015-03-20 16:08:35 +0100 |
commit | 05f17d4eaa9e74836d5736d50e456420949f2732 (patch) | |
tree | a0d1ff8a01ef42a7ed3bd84fc28a13741861d384 /src/wallet/test/wallet_tests.cpp | |
parent | 3811a5025ebc48fbbed30178d645872e3b543068 (diff) | |
parent | 50c72f23ad5f7fcd13bf016f79cac6323c329caf (diff) | |
download | bitcoin-05f17d4eaa9e74836d5736d50e456420949f2732.tar.xz |
Merge pull request #5745
50c72f2 [Move Only] Move wallet related things to src/wallet/ (Jonas Schnelli)
Diffstat (limited to 'src/wallet/test/wallet_tests.cpp')
-rw-r--r-- | src/wallet/test/wallet_tests.cpp | 310 |
1 files changed, 310 insertions, 0 deletions
diff --git a/src/wallet/test/wallet_tests.cpp b/src/wallet/test/wallet_tests.cpp new file mode 100644 index 0000000000..a5bc52b8dc --- /dev/null +++ b/src/wallet/test/wallet_tests.cpp @@ -0,0 +1,310 @@ +// Copyright (c) 2012-2014 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 "wallet/wallet.h" + +#include <set> +#include <stdint.h> +#include <utility> +#include <vector> + +#include "test/test_bitcoin.h" + +#include <boost/foreach.hpp> +#include <boost/test/unit_test.hpp> + +// how many times to run all the tests to have a chance to catch errors that only show up with particular random shuffles +#define RUN_TESTS 100 + +// some tests fail 1% of the time due to bad luck. +// we repeat those tests this many times and only complain if all iterations of the test fail +#define RANDOM_REPEATS 5 + +using namespace std; + +typedef set<pair<const CWalletTx*,unsigned int> > CoinSet; + +BOOST_FIXTURE_TEST_SUITE(wallet_tests, TestingSetup) + +static CWallet wallet; +static vector<COutput> vCoins; + +static void add_coin(const CAmount& nValue, int nAge = 6*24, bool fIsFromMe = false, int nInput=0) +{ + static int nextLockTime = 0; + CMutableTransaction tx; + tx.nLockTime = nextLockTime++; // so all transactions get different hashes + tx.vout.resize(nInput+1); + tx.vout[nInput].nValue = nValue; + if (fIsFromMe) { + // IsFromMe() returns (GetDebit() > 0), and GetDebit() is 0 if vin.empty(), + // so stop vin being empty, and cache a non-zero Debit to fake out IsFromMe() + tx.vin.resize(1); + } + CWalletTx* wtx = new CWalletTx(&wallet, tx); + if (fIsFromMe) + { + wtx->fDebitCached = true; + wtx->nDebitCached = 1; + } + COutput output(wtx, nInput, nAge, true); + vCoins.push_back(output); +} + +static void empty_wallet(void) +{ + BOOST_FOREACH(COutput output, vCoins) + delete output.tx; + vCoins.clear(); +} + +static bool equal_sets(CoinSet a, CoinSet b) +{ + pair<CoinSet::iterator, CoinSet::iterator> ret = mismatch(a.begin(), a.end(), b.begin()); + return ret.first == a.end() && ret.second == b.end(); +} + +BOOST_AUTO_TEST_CASE(coin_selection_tests) +{ + CoinSet setCoinsRet, setCoinsRet2; + CAmount nValueRet; + + LOCK(wallet.cs_wallet); + + // test multiple times to allow for differences in the shuffle order + for (int i = 0; i < RUN_TESTS; i++) + { + empty_wallet(); + + // with an empty wallet we can't even pay one cent + BOOST_CHECK(!wallet.SelectCoinsMinConf( 1 * CENT, 1, 6, vCoins, setCoinsRet, nValueRet)); + + add_coin(1*CENT, 4); // add a new 1 cent coin + + // with a new 1 cent coin, we still can't find a mature 1 cent + BOOST_CHECK(!wallet.SelectCoinsMinConf( 1 * CENT, 1, 6, vCoins, setCoinsRet, nValueRet)); + + // but we can find a new 1 cent + BOOST_CHECK( wallet.SelectCoinsMinConf( 1 * CENT, 1, 1, vCoins, setCoinsRet, nValueRet)); + BOOST_CHECK_EQUAL(nValueRet, 1 * CENT); + + add_coin(2*CENT); // add a mature 2 cent coin + + // we can't make 3 cents of mature coins + BOOST_CHECK(!wallet.SelectCoinsMinConf( 3 * CENT, 1, 6, vCoins, setCoinsRet, nValueRet)); + + // we can make 3 cents of new coins + BOOST_CHECK( wallet.SelectCoinsMinConf( 3 * CENT, 1, 1, vCoins, setCoinsRet, nValueRet)); + BOOST_CHECK_EQUAL(nValueRet, 3 * CENT); + + add_coin(5*CENT); // add a mature 5 cent coin, + add_coin(10*CENT, 3, true); // a new 10 cent coin sent from one of our own addresses + add_coin(20*CENT); // and a mature 20 cent coin + + // now we have new: 1+10=11 (of which 10 was self-sent), and mature: 2+5+20=27. total = 38 + + // we can't make 38 cents only if we disallow new coins: + BOOST_CHECK(!wallet.SelectCoinsMinConf(38 * CENT, 1, 6, vCoins, setCoinsRet, nValueRet)); + // we can't even make 37 cents if we don't allow new coins even if they're from us + BOOST_CHECK(!wallet.SelectCoinsMinConf(38 * CENT, 6, 6, vCoins, setCoinsRet, nValueRet)); + // but we can make 37 cents if we accept new coins from ourself + BOOST_CHECK( wallet.SelectCoinsMinConf(37 * CENT, 1, 6, vCoins, setCoinsRet, nValueRet)); + BOOST_CHECK_EQUAL(nValueRet, 37 * CENT); + // and we can make 38 cents if we accept all new coins + BOOST_CHECK( wallet.SelectCoinsMinConf(38 * CENT, 1, 1, vCoins, setCoinsRet, nValueRet)); + BOOST_CHECK_EQUAL(nValueRet, 38 * CENT); + + // try making 34 cents from 1,2,5,10,20 - we can't do it exactly + BOOST_CHECK( wallet.SelectCoinsMinConf(34 * CENT, 1, 1, vCoins, setCoinsRet, nValueRet)); + BOOST_CHECK_GT(nValueRet, 34 * CENT); // but should get more than 34 cents + BOOST_CHECK_EQUAL(setCoinsRet.size(), 3U); // the best should be 20+10+5. it's incredibly unlikely the 1 or 2 got included (but possible) + + // when we try making 7 cents, the smaller coins (1,2,5) are enough. We should see just 2+5 + BOOST_CHECK( wallet.SelectCoinsMinConf( 7 * CENT, 1, 1, vCoins, setCoinsRet, nValueRet)); + BOOST_CHECK_EQUAL(nValueRet, 7 * CENT); + BOOST_CHECK_EQUAL(setCoinsRet.size(), 2U); + + // when we try making 8 cents, the smaller coins (1,2,5) are exactly enough. + BOOST_CHECK( wallet.SelectCoinsMinConf( 8 * CENT, 1, 1, vCoins, setCoinsRet, nValueRet)); + BOOST_CHECK(nValueRet == 8 * CENT); + BOOST_CHECK_EQUAL(setCoinsRet.size(), 3U); + + // when we try making 9 cents, no subset of smaller coins is enough, and we get the next bigger coin (10) + BOOST_CHECK( wallet.SelectCoinsMinConf( 9 * CENT, 1, 1, vCoins, setCoinsRet, nValueRet)); + BOOST_CHECK_EQUAL(nValueRet, 10 * CENT); + BOOST_CHECK_EQUAL(setCoinsRet.size(), 1U); + + // now clear out the wallet and start again to test choosing between subsets of smaller coins and the next biggest coin + empty_wallet(); + + add_coin( 6*CENT); + add_coin( 7*CENT); + add_coin( 8*CENT); + add_coin(20*CENT); + add_coin(30*CENT); // now we have 6+7+8+20+30 = 71 cents total + + // check that we have 71 and not 72 + BOOST_CHECK( wallet.SelectCoinsMinConf(71 * CENT, 1, 1, vCoins, setCoinsRet, nValueRet)); + BOOST_CHECK(!wallet.SelectCoinsMinConf(72 * CENT, 1, 1, vCoins, setCoinsRet, nValueRet)); + + // now try making 16 cents. the best smaller coins can do is 6+7+8 = 21; not as good at the next biggest coin, 20 + BOOST_CHECK( wallet.SelectCoinsMinConf(16 * CENT, 1, 1, vCoins, setCoinsRet, nValueRet)); + BOOST_CHECK_EQUAL(nValueRet, 20 * CENT); // we should get 20 in one coin + BOOST_CHECK_EQUAL(setCoinsRet.size(), 1U); + + add_coin( 5*CENT); // now we have 5+6+7+8+20+30 = 75 cents total + + // now if we try making 16 cents again, the smaller coins can make 5+6+7 = 18 cents, better than the next biggest coin, 20 + BOOST_CHECK( wallet.SelectCoinsMinConf(16 * CENT, 1, 1, vCoins, setCoinsRet, nValueRet)); + BOOST_CHECK_EQUAL(nValueRet, 18 * CENT); // we should get 18 in 3 coins + BOOST_CHECK_EQUAL(setCoinsRet.size(), 3U); + + add_coin( 18*CENT); // now we have 5+6+7+8+18+20+30 + + // and now if we try making 16 cents again, the smaller coins can make 5+6+7 = 18 cents, the same as the next biggest coin, 18 + BOOST_CHECK( wallet.SelectCoinsMinConf(16 * CENT, 1, 1, vCoins, setCoinsRet, nValueRet)); + BOOST_CHECK_EQUAL(nValueRet, 18 * CENT); // we should get 18 in 1 coin + BOOST_CHECK_EQUAL(setCoinsRet.size(), 1U); // because in the event of a tie, the biggest coin wins + + // now try making 11 cents. we should get 5+6 + BOOST_CHECK( wallet.SelectCoinsMinConf(11 * CENT, 1, 1, vCoins, setCoinsRet, nValueRet)); + BOOST_CHECK_EQUAL(nValueRet, 11 * CENT); + BOOST_CHECK_EQUAL(setCoinsRet.size(), 2U); + + // check that the smallest bigger coin is used + add_coin( 1*COIN); + add_coin( 2*COIN); + add_coin( 3*COIN); + add_coin( 4*COIN); // now we have 5+6+7+8+18+20+30+100+200+300+400 = 1094 cents + BOOST_CHECK( wallet.SelectCoinsMinConf(95 * CENT, 1, 1, vCoins, setCoinsRet, nValueRet)); + BOOST_CHECK_EQUAL(nValueRet, 1 * COIN); // we should get 1 BTC in 1 coin + BOOST_CHECK_EQUAL(setCoinsRet.size(), 1U); + + BOOST_CHECK( wallet.SelectCoinsMinConf(195 * CENT, 1, 1, vCoins, setCoinsRet, nValueRet)); + BOOST_CHECK_EQUAL(nValueRet, 2 * COIN); // we should get 2 BTC in 1 coin + BOOST_CHECK_EQUAL(setCoinsRet.size(), 1U); + + // empty the wallet and start again, now with fractions of a cent, to test sub-cent change avoidance + empty_wallet(); + add_coin(0.1*CENT); + add_coin(0.2*CENT); + add_coin(0.3*CENT); + add_coin(0.4*CENT); + add_coin(0.5*CENT); + + // try making 1 cent from 0.1 + 0.2 + 0.3 + 0.4 + 0.5 = 1.5 cents + // we'll get sub-cent change whatever happens, so can expect 1.0 exactly + BOOST_CHECK( wallet.SelectCoinsMinConf(1 * CENT, 1, 1, vCoins, setCoinsRet, nValueRet)); + BOOST_CHECK_EQUAL(nValueRet, 1 * CENT); + + // but if we add a bigger coin, making it possible to avoid sub-cent change, things change: + add_coin(1111*CENT); + + // try making 1 cent from 0.1 + 0.2 + 0.3 + 0.4 + 0.5 + 1111 = 1112.5 cents + BOOST_CHECK( wallet.SelectCoinsMinConf(1 * CENT, 1, 1, vCoins, setCoinsRet, nValueRet)); + BOOST_CHECK_EQUAL(nValueRet, 1 * CENT); // we should get the exact amount + + // if we add more sub-cent coins: + add_coin(0.6*CENT); + add_coin(0.7*CENT); + + // and try again to make 1.0 cents, we can still make 1.0 cents + BOOST_CHECK( wallet.SelectCoinsMinConf(1 * CENT, 1, 1, vCoins, setCoinsRet, nValueRet)); + BOOST_CHECK_EQUAL(nValueRet, 1 * CENT); // we should get the exact amount + + // run the 'mtgox' test (see http://blockexplorer.com/tx/29a3efd3ef04f9153d47a990bd7b048a4b2d213daaa5fb8ed670fb85f13bdbcf) + // they tried to consolidate 10 50k coins into one 500k coin, and ended up with 50k in change + empty_wallet(); + for (int i = 0; i < 20; i++) + add_coin(50000 * COIN); + + BOOST_CHECK( wallet.SelectCoinsMinConf(500000 * COIN, 1, 1, vCoins, setCoinsRet, nValueRet)); + BOOST_CHECK_EQUAL(nValueRet, 500000 * COIN); // we should get the exact amount + BOOST_CHECK_EQUAL(setCoinsRet.size(), 10U); // in ten coins + + // if there's not enough in the smaller coins to make at least 1 cent change (0.5+0.6+0.7 < 1.0+1.0), + // we need to try finding an exact subset anyway + + // sometimes it will fail, and so we use the next biggest coin: + empty_wallet(); + add_coin(0.5 * CENT); + add_coin(0.6 * CENT); + add_coin(0.7 * CENT); + add_coin(1111 * CENT); + BOOST_CHECK( wallet.SelectCoinsMinConf(1 * CENT, 1, 1, vCoins, setCoinsRet, nValueRet)); + BOOST_CHECK_EQUAL(nValueRet, 1111 * CENT); // we get the bigger coin + BOOST_CHECK_EQUAL(setCoinsRet.size(), 1U); + + // but sometimes it's possible, and we use an exact subset (0.4 + 0.6 = 1.0) + empty_wallet(); + add_coin(0.4 * CENT); + add_coin(0.6 * CENT); + add_coin(0.8 * CENT); + add_coin(1111 * CENT); + BOOST_CHECK( wallet.SelectCoinsMinConf(1 * CENT, 1, 1, vCoins, setCoinsRet, nValueRet)); + BOOST_CHECK_EQUAL(nValueRet, 1 * CENT); // we should get the exact amount + BOOST_CHECK_EQUAL(setCoinsRet.size(), 2U); // in two coins 0.4+0.6 + + // test avoiding sub-cent change + empty_wallet(); + add_coin(0.0005 * COIN); + add_coin(0.01 * COIN); + add_coin(1 * COIN); + + // trying to make 1.0001 from these three coins + BOOST_CHECK( wallet.SelectCoinsMinConf(1.0001 * COIN, 1, 1, vCoins, setCoinsRet, nValueRet)); + BOOST_CHECK_EQUAL(nValueRet, 1.0105 * COIN); // we should get all coins + BOOST_CHECK_EQUAL(setCoinsRet.size(), 3U); + + // but if we try to make 0.999, we should take the bigger of the two small coins to avoid sub-cent change + BOOST_CHECK( wallet.SelectCoinsMinConf(0.999 * COIN, 1, 1, vCoins, setCoinsRet, nValueRet)); + BOOST_CHECK_EQUAL(nValueRet, 1.01 * COIN); // we should get 1 + 0.01 + BOOST_CHECK_EQUAL(setCoinsRet.size(), 2U); + + // test randomness + { + empty_wallet(); + for (int i2 = 0; i2 < 100; i2++) + add_coin(COIN); + + // picking 50 from 100 coins doesn't depend on the shuffle, + // but does depend on randomness in the stochastic approximation code + BOOST_CHECK(wallet.SelectCoinsMinConf(50 * COIN, 1, 6, vCoins, setCoinsRet , nValueRet)); + BOOST_CHECK(wallet.SelectCoinsMinConf(50 * COIN, 1, 6, vCoins, setCoinsRet2, nValueRet)); + BOOST_CHECK(!equal_sets(setCoinsRet, setCoinsRet2)); + + int fails = 0; + for (int i = 0; i < RANDOM_REPEATS; i++) + { + // selecting 1 from 100 identical coins depends on the shuffle; this test will fail 1% of the time + // run the test RANDOM_REPEATS times and only complain if all of them fail + BOOST_CHECK(wallet.SelectCoinsMinConf(COIN, 1, 6, vCoins, setCoinsRet , nValueRet)); + BOOST_CHECK(wallet.SelectCoinsMinConf(COIN, 1, 6, vCoins, setCoinsRet2, nValueRet)); + if (equal_sets(setCoinsRet, setCoinsRet2)) + fails++; + } + BOOST_CHECK_NE(fails, RANDOM_REPEATS); + + // add 75 cents in small change. not enough to make 90 cents, + // then try making 90 cents. there are multiple competing "smallest bigger" coins, + // one of which should be picked at random + add_coin( 5*CENT); add_coin(10*CENT); add_coin(15*CENT); add_coin(20*CENT); add_coin(25*CENT); + + fails = 0; + for (int i = 0; i < RANDOM_REPEATS; i++) + { + // selecting 1 from 100 identical coins depends on the shuffle; this test will fail 1% of the time + // run the test RANDOM_REPEATS times and only complain if all of them fail + BOOST_CHECK(wallet.SelectCoinsMinConf(90*CENT, 1, 6, vCoins, setCoinsRet , nValueRet)); + BOOST_CHECK(wallet.SelectCoinsMinConf(90*CENT, 1, 6, vCoins, setCoinsRet2, nValueRet)); + if (equal_sets(setCoinsRet, setCoinsRet2)) + fails++; + } + BOOST_CHECK_NE(fails, RANDOM_REPEATS); + } + } + empty_wallet(); +} + +BOOST_AUTO_TEST_SUITE_END() |