ConstantFolding and BinaryExpression integration test

Author: dajh-horta

liquidjava-verifier/src/test/java/liquidjava/ast/opt/TestOptimization.java

@@ -0,0 +1,16 @@
+import static org.junit.Assert.assertEquals;
+import org.junit.Test;
+import liquidjava.rj_language.ast.BinaryExpression;
+import liquidjava.rj_language.ast.LiteralInt;
+import liquidjava.rj_language.opt.ConstantFolding;
+import liquidjava.rj_language.opt.derivation_node.ValDerivationNode;
+
+public class TestOptimization {
+    @Test
+    public void testBinaryFold() {
+        BinaryExpression b = new BinaryExpression(new LiteralInt(1), "+", new LiteralInt(2));
+
+        ValDerivationNode r = ConstantFolding.fold(new ValDerivationNode(b, null));
+        assertEquals(r.getValue(), new LiteralInt(3));
+    }
+}