Differential D1555 Diff 4305 src/test/work_comparator_tests.cpp

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src/test/work_comparator_tests.cpp

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				// Copyright (c) 2018 The Bitcoin developers
				// Distributed under the MIT software license, see the accompanying
				// file COPYING or http://www.opensource.org/licenses/mit-license.php.

				#include "blockindexworkcomparator.h"

				#include <boost/test/unit_test.hpp>

				BOOST_AUTO_TEST_SUITE(work_comparator_tests)

				BOOST_AUTO_TEST_CASE(work_comparator) {
				CBlockIndex indexA, indexB;

				// Differing chain work
				indexA.nChainWork = 0;
				indexB.nChainWork = 1;
				for (int sequenceIdA = 1; sequenceIdA < 1024; sequenceIdA *= 2) {
				for (int sequenceIdB = 1; sequenceIdB < 1024; sequenceIdB *= 2) {
				// Differing sequenceId doesn't affect chain work
				indexA.nSequenceId = sequenceIdA;
				indexB.nSequenceId = sequenceIdB;
				BOOST_CHECK(CBlockIndexWorkComparator()(&indexA, &indexB));
				}
				}

				// Same chain work, but differing sequenceId
				indexA = CBlockIndex();
				indexB = CBlockIndex();
				for (int sequenceIdA = 1; sequenceIdA < 1024; sequenceIdA *= 2) {
				for (int sequenceIdB = 1; sequenceIdB < 1024; sequenceIdB *= 2) {
				if (sequenceIdA == sequenceIdB) {
				continue;
				}

				indexA.nSequenceId = sequenceIdA;
				indexB.nSequenceId = sequenceIdB;
				if (sequenceIdA > sequenceIdB) {
				BOOST_CHECK(CBlockIndexWorkComparator()(&indexA, &indexB));
				} else {
				BOOST_CHECK(CBlockIndexWorkComparator()(&indexB, &indexA));
				}
				}
				}

				// All else equal, so checking pointer address as final check
				CBlockIndex *pindexA = new CBlockIndex();
				CBlockIndex *pindexB = new CBlockIndex();
				if (pindexA < pindexB) {
				BOOST_CHECK(CBlockIndexWorkComparator()(pindexB, pindexA));
				} else {
				BOOST_CHECK(CBlockIndexWorkComparator()(pindexA, pindexB));
				}

				// Same block should return false
				BOOST_CHECK(!CBlockIndexWorkComparator()(pindexA, pindexA));
				}

				BOOST_AUTO_TEST_SUITE_END()