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/// \file
/// Unit tests for calling external SAT solver
/// \author Francis Botero <fbbotero@amazon.com>
#include <solvers/sat/external_sat.h>
#include <testing-utils/use_catch.h>
#include <util/cout_message.h>
class external_sat_test : public external_satt
{
public:
external_sat_test(message_handlert &message_handler, std::string cmd)
: external_satt(message_handler, cmd)
{
}
resultt parse_result(std::string result)
{
return external_satt::parse_result(result);
}
};
SCENARIO("external_sat", "[core][solvers][sat][external_sat]")
{
console_message_handlert message_handler;
message_handler.set_verbosity(0);
GIVEN("External SAT solver is used")
{
external_sat_test satcheck(message_handler, "cmd");
AND_GIVEN("the output is malformed")
{
auto result = GENERATE(
as<std::string>(),
"c comment line\nc another comment\n",
"c no results but assignments present\nv 1 2 3 4\n",
"c too many assignments\ns SATISFIABLE\nv 1 2 3 4",
"v_starts the line but is malformed",
"s_starts the line but is malformed",
"s SOMETHING STRANGE",
"another result");
WHEN("the solver output contains:\n" << result)
{
THEN("the result is set to error")
{
REQUIRE(satcheck.parse_result(result) == propt::resultt::P_ERROR);
}
}
}
AND_GIVEN("SAT instance is unsatisfiable")
{
std::string unsat_result = GENERATE(
as<std::string>(),
"s UNSATISFIABLE",
"s UNSATISFIABLE\ns SATISFIABLE",
"s SATISFIABLE\ns UNSATISFIABLE");
WHEN("the solver output contains:\n" << unsat_result)
{
THEN("the result is set to unsatisfiable")
{
REQUIRE(
satcheck.parse_result(unsat_result) ==
propt::resultt::P_UNSATISFIABLE);
}
}
}
AND_GIVEN("SAT instance is satisfiable")
{
auto gen = GENERATE(
std::make_tuple(
"s SATISFIABLE\nv 1 2 3 4",
std::vector<bool>{true, true, true, true}),
std::make_tuple(
"s SATISFIABLE\nv 1 2 -3 -4",
std::vector<bool>{true, true, false, false}),
std::make_tuple(
"s SATISFIABLE\nv 1 -2 3 -4",
std::vector<bool>{true, false, true, false}),
std::make_tuple(
"s SATISFIABLE\nv -1 2 -3 4",
std::vector<bool>{false, true, false, true}),
std::make_tuple(
"s SATISFIABLE\nv -1 -2 -3 -4",
std::vector<bool>{false, false, false, false}),
std::make_tuple(
"v 4\ns SATISFIABLE\nv -1\nv 2\nv -3\n",
std::vector<bool>{false, true, false, true}));
WHEN("the solver output contains:\n" << std::get<0>(gen))
{
THEN("the result is set to satisfiable")
{
auto arr = std::get<1>(gen);
// add false to the start for element at 0
arr.insert(arr.begin(), false);
satcheck.set_no_variables(arr.size());
auto results_vector =
std::vector<bool>(satcheck.no_variables(), false);
REQUIRE(
satcheck.parse_result(std::get<0>(gen)) ==
propt::resultt::P_SATISFIABLE);
AND_THEN("has correct assignments")
{
auto assignments = satcheck.get_assignment();
for(size_t i = 1; i < satcheck.no_variables(); i++)
{
results_vector[i] = assignments[i].is_true();
}
REQUIRE_THAT(results_vector, Catch::Equals(arr));
}
}
}
}
}
}
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