1 files changed, 77 insertions, 0 deletions
diff --git a/src/test/validation_tests.cpp b/src/test/validation_tests.cpp
new file mode 100644
index 0000000000..8d06ecd3a9
--- /dev/null
+++ b/src/test/validation_tests.cpp
@@ -0,0 +1,77 @@
+// Copyright (c) 2014-2019 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 <chainparams.h>
+#include <net.h>
+#include <validation.h>
+
+#include <test/test_bitcoin.h>
+
+#include <boost/signals2/signal.hpp>
+#include <boost/test/unit_test.hpp>
+
+BOOST_FIXTURE_TEST_SUITE(validation_tests, TestingSetup)
+
+static void TestBlockSubsidyHalvings(const Consensus::Params& consensusParams)
+{
+    int maxHalvings = 64;
+    CAmount nInitialSubsidy = 50 * COIN;
+
+    CAmount nPreviousSubsidy = nInitialSubsidy * 2; // for height == 0
+    BOOST_CHECK_EQUAL(nPreviousSubsidy, nInitialSubsidy * 2);
+    for (int nHalvings = 0; nHalvings < maxHalvings; nHalvings++) {
+        int nHeight = nHalvings * consensusParams.nSubsidyHalvingInterval;
+        CAmount nSubsidy = GetBlockSubsidy(nHeight, consensusParams);
+        BOOST_CHECK(nSubsidy <= nInitialSubsidy);
+        BOOST_CHECK_EQUAL(nSubsidy, nPreviousSubsidy / 2);
+        nPreviousSubsidy = nSubsidy;
+    }
+    BOOST_CHECK_EQUAL(GetBlockSubsidy(maxHalvings * consensusParams.nSubsidyHalvingInterval, consensusParams), 0);
+}
+
+static void TestBlockSubsidyHalvings(int nSubsidyHalvingInterval)
+{
+    Consensus::Params consensusParams;
+    consensusParams.nSubsidyHalvingInterval = nSubsidyHalvingInterval;
+    TestBlockSubsidyHalvings(consensusParams);
+}
+
+BOOST_AUTO_TEST_CASE(block_subsidy_test)
+{
+    const auto chainParams = CreateChainParams(CBaseChainParams::MAIN);
+    TestBlockSubsidyHalvings(chainParams->GetConsensus()); // As in main
+    TestBlockSubsidyHalvings(150); // As in regtest
+    TestBlockSubsidyHalvings(1000); // Just another interval
+}
+
+BOOST_AUTO_TEST_CASE(subsidy_limit_test)
+{
+    const auto chainParams = CreateChainParams(CBaseChainParams::MAIN);
+    CAmount nSum = 0;
+    for (int nHeight = 0; nHeight < 14000000; nHeight += 1000) {
+        CAmount nSubsidy = GetBlockSubsidy(nHeight, chainParams->GetConsensus());
+        BOOST_CHECK(nSubsidy <= 50 * COIN);
+        nSum += nSubsidy * 1000;
+        BOOST_CHECK(MoneyRange(nSum));
+    }
+    BOOST_CHECK_EQUAL(nSum, CAmount{2099999997690000});
+}
+
+static bool ReturnFalse() { return false; }
+static bool ReturnTrue() { return true; }
+
+BOOST_AUTO_TEST_CASE(test_combiner_all)
+{
+    boost::signals2::signal<bool (), CombinerAll> Test;
+    BOOST_CHECK(Test());
+    Test.connect(&ReturnFalse);
+    BOOST_CHECK(!Test());
+    Test.connect(&ReturnTrue);
+    BOOST_CHECK(!Test());
+    Test.disconnect(&ReturnFalse);
+    BOOST_CHECK(Test());
+    Test.disconnect(&ReturnTrue);
+    BOOST_CHECK(Test());
+}
+BOOST_AUTO_TEST_SUITE_END()