151 lines
2.9 KiB
C++
151 lines
2.9 KiB
C++
#include <catch.hpp>
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#include <sstream>
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#include <anthem/Context.h>
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#include <anthem/Translation.h>
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////////////////////////////////////////////////////////////////////////////////////////////////////
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TEST_CASE("[completion] Rules are completed", "[completion]")
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{
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std::stringstream input;
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std::stringstream output;
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std::stringstream errors;
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anthem::output::Logger logger(output, errors);
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anthem::Context context = {logger, {}};
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context.simplify = true;
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context.complete = true;
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SECTION("predicate in single rule head")
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{
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input << "p :- q.";
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anthem::translate("input", input, context);
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CHECK(output.str() ==
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"(p <-> q)\n"
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"not q\n");
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}
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SECTION("predicate in multiple rule heads")
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{
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input <<
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"p :- q.\n"
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"p :- r.\n"
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"p :- s.";
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anthem::translate("input", input, context);
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CHECK(output.str() ==
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"(p <-> (q or r or s))\n"
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"not q\n"
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"not r\n"
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"not s\n");
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}
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SECTION("multiple predicates are correctly separated")
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{
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input <<
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"p :- s.\n"
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"q :- t.\n"
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"p :- q.\n"
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"r :- t.\n"
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"q :- r.";
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anthem::translate("input", input, context);
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CHECK(output.str() ==
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"(p <-> (s or q))\n"
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"(q <-> (t or r))\n"
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"(r <-> t)\n"
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"not s\n"
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"not t\n");
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}
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SECTION("integrity constraints")
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{
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input <<
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":- q.\n"
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":- r(5).\n"
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":- s(N).\n"
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"#false :- t.\n"
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"#false :- u(5).";
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anthem::translate("input", input, context);
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CHECK(output.str() ==
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"not q\n"
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"forall V1 not r(V1)\n"
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"forall V1 not s(V1)\n"
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"not t\n"
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"forall V1 not u(V1)\n"
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"not q\n"
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"not r(5)\n"
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"forall N not s(N)\n"
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"not t\n"
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"not u(5)\n");
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}
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SECTION("Booleans")
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{
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input <<
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"#true :- #true.\n"
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"#true :- #false.\n"
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"#false :- #true.\n"
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"#false :- #false.\n";
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anthem::translate("input", input, context);
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CHECK(output.str() ==
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"not #true\n"
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"not #false\n");
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}
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SECTION("facts")
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{
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input <<
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"q.\n"
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"r.\n"
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"s :- #true.\n"
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"t :- #true.";
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anthem::translate("input", input, context);
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CHECK(output.str() ==
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"q\n"
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"r\n"
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"s\n"
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"t\n");
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}
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SECTION("useless implications")
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{
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input <<
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"#true :- p, q(N), t(1, 2).\n"
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"#true.\n"
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"v :- #false.";
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anthem::translate("input", input, context);
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// TODO: implement completion for unused predicates
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CHECK(output.str() ==
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"not p\n"
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"forall V1 not q(V1)\n"
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"forall V1, V2 not t(V1, V2)\n"
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"not v\n");
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}
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SECTION("example")
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{
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input <<
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"{in(1..n, 1..r)}.\n"
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"covered(I) :- in(I, S).\n"
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":- I = 1..n, not covered(I).\n"
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":- in(I, S), in(J, S), in(I + J, S).";
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anthem::translate("input", input, context);
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CHECK(output.str() ==
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"forall V1 (covered(V1) <-> exists I, S (V1 = I and in(I, S)))\n"
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"forall V1, V2 (in(V1, V2) <-> (V1 in 1..n and V2 in 1..r and in(V1, V2)))\n"
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"forall I not (I in 1..n and not covered(I))\n"
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"forall I, S, J not (in(I, S) and in(J, S) and exists X5 (X5 in (I + J) and in(X5, S)))\n");
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}
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// TODO: test collecting free variables
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}
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