Added some unit tests for the simplification procedure.

tests/TestSimplification.cpp

@@ -0,0 +1,44 @@
+#include <catch.hpp>
+
+#include <sstream>
+
+#include <anthem/Context.h>
+#include <anthem/Translation.h>
+#include <anthem/Simplification.h>
+
+////////////////////////////////////////////////////////////////////////////////////////////////////
+
+TEST_CASE("[simplification] Rules are simplified correctly", "[simplified]")
+{
+	std::stringstream input;
+	std::stringstream output;
+	std::stringstream errors;
+
+	anthem::output::Logger logger(output, errors);
+	anthem::Context context = {logger, {}};
+	context.simplify = true;
+
+	SECTION("example 1")
+	{
+		input << ":- in(I, S), in(J, S), in(I + J, S).";
+		anthem::translate("input", input, context);
+
+		REQUIRE(output.str() == "((in(I, S) and in(J, S) and exists X5 (X5 in (I + J) and in(X5, S))) -> #false)\n");
+	}
+
+	SECTION("example 2")
+	{
+		input << "covered(I) :- in(I, S).";
+		anthem::translate("input", input, context);
+
+		REQUIRE(output.str() == "((V1 = I and in(I, S)) -> covered(V1))\n");
+	}
+
+	SECTION("example 3")
+	{
+		input << ":- not covered(I), I = 1..n.";
+		anthem::translate("input", input, context);
+
+		REQUIRE(output.str() == "((not covered(I) and I in 1..n) -> #false)\n");
+	}
+}

tests/TestTranslation.cpp

@@ -14,7 +14,8 @@ TEST_CASE("[translation] Rules are translated correctly", "[translation]")
 	std::stringstream errors;
 
 	anthem::output::Logger logger(output, errors);
-	anthem::Context context = {logger, {}, 1};
+	anthem::Context context = {logger, {}};
+	context.simplify = false;
 
 	SECTION("simple example 1")
 	{