Added 2 unit tests and 1 integration test - fc61801

Author: 61801

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

@@ -0,0 +1,18 @@
+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));
+    }
+}

liquidjava-verifier/src/test/java/liquidjava/rj_language/TestLiteralBoolean.java

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+package liquidjava.rj_language;
+
+import static org.junit.Assert.assertNotEquals;
+import org.junit.Test;
+import liquidjava.rj_language.ast.LiteralBoolean;
+
+public class TestLiteralBoolean {
+    @Test
+    public void testHashCode() {
+        LiteralBoolean b1 = new LiteralBoolean(true);
+        LiteralBoolean b2 = new LiteralBoolean(false);
+        assertNotEquals(b1.hashCode(), b2.hashCode());
+    }
+}

liquidjava-verifier/src/test/java/liquidjava/rj_language/TestLiteralString.java

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+package liquidjava.rj_language;
+
+import static org.junit.Assert.assertNotEquals;
+import org.junit.Test;
+import liquidjava.rj_language.ast.LiteralString;
+
+public class TestLiteralString {
+    @Test
+    public void testLiteralString() {
+        LiteralString s1 = new LiteralString("hello");
+        LiteralString s2 = new LiteralString("world");
+        assertNotEquals(s1.hashCode(), s2.hashCode());
+    }
+}