63 lines
1.9 KiB
C++
63 lines
1.9 KiB
C++
#include <catch.hpp>
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#include <sstream>
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#include <anthem/AST.h>
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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("[placeholders] Programs with placeholders are correctly completed", "[placeholders]")
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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(std::move(logger));
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context.performSimplification = true;
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context.performCompletion = true;
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SECTION("no placeholders")
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{
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input <<
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"colored(V, red) :- vertex(V), not colored(V, green), not colored(V, blue).";
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anthem::translate("input", input, context);
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CHECK(output.str() ==
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"forall V1, V2 (colored(V1, V2) <-> (V2 = red and vertex(V1) and not colored(V1, green) and not colored(V1, blue)))\n"
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"forall V3 not vertex(V3)\n");
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}
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SECTION("single placeholder")
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{
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input <<
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"#external vertex(1).\n"
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"colored(V, red) :- vertex(V), not colored(V, green), not colored(V, blue).";
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anthem::translate("input", input, context);
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CHECK(output.str() ==
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"forall V1, V2 (colored(V1, V2) <-> (V2 = red and vertex(V1) and not colored(V1, green) and not colored(V1, blue)))\n");
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}
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SECTION("complex example: graph coloring")
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{
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input <<
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"#external color(1).\n"
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"#external edge(2).\n"
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"#external vertex(1).\n"
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"#show color/2.\n"
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"{color(V, C)} :- vertex(V), color(C).\n"
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"covered(V) :- color(V, _).\n"
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":- vertex(V), not covered(V).\n"
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":- color(V1, C), color(V2, C), edge(V1, V2).";
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anthem::translate("input", input, context);
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CHECK(output.str() ==
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"forall V1, V2 (color(V1, V2) -> (vertex(V1) and color(V2)))\n"
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"forall U1 (vertex(U1) -> exists U2 color(U1, U2))\n"
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"forall U3, U4, U5 (not color(U3, U4) or not color(U5, U4) or not edge(U3, U5))\n");
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}
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}
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