#include #include #include #include #include //////////////////////////////////////////////////////////////////////////////////////////////////// TEST_CASE("[integer detection] Integer variables are correctly detected", "[integer detection]") { std::stringstream input; std::stringstream output; std::stringstream errors; anthem::output::Logger logger(output, errors); anthem::Context context(std::move(logger)); context.performSimplification = true; context.performCompletion = true; context.performIntegerDetection = true; SECTION("simple-to-detect integer parameter") { input << "p(X) :- X = 1..5."; anthem::translate("input", input, context); CHECK(output.str() == "forall N1 (p(N1) <-> N1 in 1..5)\n" "int(p/1@1)\n"); } SECTION("simple noninteger parameter") { input << "p(X) :- X = 1..5.\n" "p(X) :- X = error."; anthem::translate("input", input, context); CHECK(output.str() == "forall V1 (p(V1) <-> (V1 in 1..5 or V1 = error))\n"); } SECTION("integer parameter with arithmetics") { input << "p(X) :- X = (2 + (1..5)) * 2."; anthem::translate("input", input, context); CHECK(output.str() == "forall N1 (p(N1) <-> N1 in ((2 + 1..5) * 2))\n" "int(p/1@1)\n"); } SECTION("integer parameter with arithmetics depending on another integer parameter") { input << "p(X) :- X = 1..5." << "q(X) :- p(Y), X = (Y + 5) / 3."; anthem::translate("input", input, context); CHECK(output.str() == "forall N1 (p(N1) <-> N1 in 1..5)\n" "forall N2 (q(N2) <-> exists N3 (p(N3) and N2 in ((N3 + 5) / 3)))\n" "int(p/1@1)\n" "int(q/1@1)\n"); } SECTION("multiple mixed parameters") { input << "p(X) :- X = 1..5." << "q(X) :- X = error." << "r(A, B, C) :- p(X), A = X ** 2, q(B), p(C)."; anthem::translate("input", input, context); CHECK(output.str() == "forall N1 (p(N1) <-> N1 in 1..5)\n" "forall V1 (q(V1) <-> V1 = error)\n" "forall N2, V2, N3 (r(N2, V2, N3) <-> exists N4 (p(N4) and N2 = (N4 ** 2) and q(V2) and p(N3)))\n" "int(p/1@1)\n" "int(r/3@1)\n" "int(r/3@3)\n"); } SECTION("integer parameter despite usage of constant symbol") { input << "p(X) :- X = 2..n."; anthem::translate("input", input, context); CHECK(output.str() == "forall N1 (p(N1) <-> N1 in 2..n)\n" "int(p/1@1)\n"); } SECTION("integer arithmetics are correctly simplified for operators other than division") { input << "p(X) :- X = 5 + 9 ** 2."; anthem::translate("input", input, context); CHECK(output.str() == "forall N1 (p(N1) <-> N1 = (5 + (9 ** 2)))\n" "int(p/1@1)\n"); } SECTION("integer arithmetics are not simplified with the division operator") { input << "p(X) :- X = 5 + 9 / 0."; anthem::translate("input", input, context); CHECK(output.str() == "forall N1 (p(N1) <-> N1 in (5 + (9 / 0)))\n" "int(p/1@1)\n"); } }