mirror of
https://github.com/ethereum/solidity
synced 2023-10-03 13:03:40 +00:00
122 lines
2.6 KiB
C++
122 lines
2.6 KiB
C++
/*
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This file is part of solidity.
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solidity is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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solidity is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with solidity. If not, see <http://www.gnu.org/licenses/>.
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*/
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// SPDX-License-Identifier: GPL-3.0
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#include <libsolutil/CDCL.h>
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#include <test/Common.h>
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#include <boost/test/unit_test.hpp>
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using namespace std;
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using namespace solidity::util;
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namespace solidity::util::test
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{
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class CDCLTestFramework
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{
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public:
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Literal variable(string const& _name)
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{
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m_variables.emplace_back(_name);
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return Literal{true, m_variables.size() - 1};
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}
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void satisfiable(vector<Clause> _clauses)
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{
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auto model = CDCL{m_variables, move(_clauses)}.solve();
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BOOST_REQUIRE(!!model);
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}
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void unsatisfiable(vector<Clause> _clauses)
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{
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auto model = CDCL{m_variables, move(_clauses)}.solve();
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BOOST_REQUIRE(!model);
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}
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protected:
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vector<string> m_variables;
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};
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BOOST_FIXTURE_TEST_SUITE(CDCL, CDCLTestFramework, *boost::unit_test::label("nooptions"))
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BOOST_AUTO_TEST_CASE(basic)
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{
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auto x = variable("x");
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Clause c1{x, ~x};
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satisfiable({c1});
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}
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BOOST_AUTO_TEST_CASE(basic_unsat1)
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{
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auto x = variable("x");
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unsatisfiable({{x}, {~x}});
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}
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BOOST_AUTO_TEST_CASE(basic_unsat2)
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{
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auto x1 = variable("x1");
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auto x2 = variable("x2");
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Clause c1{x1, ~x2};
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Clause c2{~x1, x2};
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Clause c3{x1, x2};
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Clause c4{~x1, ~x2};
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unsatisfiable({c1, c2, c3, c4});
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}
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BOOST_AUTO_TEST_CASE(basic_sat)
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{
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auto x1 = variable("x1");
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auto x2 = variable("x2");
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Clause c1{x1, ~x2};
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Clause c2{~x1, x2};
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Clause c3{x1, x2};
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Clause c4{~x1, ~x2};
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unsatisfiable({c1, c2, c3, c4});
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}
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BOOST_AUTO_TEST_CASE(learning)
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{
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auto x1 = variable("x1");
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auto x2 = variable("x2");
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auto x3 = variable("x3");
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auto x4 = variable("x4");
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auto x7 = variable("x7");
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auto x8 = variable("x8");
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auto x9 = variable("x9");
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auto x10 = variable("x10");
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auto x11 = variable("x11");
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auto x12 = variable("x12");
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Clause c1{x1, x4};
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Clause c2{x1, ~x3, ~x8};
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Clause c3{x1, x8, x12};
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Clause c4{x2, x11};
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Clause c5{~x7, ~x3, x9};
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Clause c6{~x7, x8, ~x9};
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Clause c7{x7, x8, ~x10};
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Clause c8{x7, x10, ~x12};
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satisfiable({c1, c2, c3, c4, c5, c6, c7, c8});
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}
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BOOST_AUTO_TEST_SUITE_END()
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}
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