Test Java API on CI

1 files changed, 74 insertions, 0 deletions

diff --git a/test/java/Combination.java b/test/java/Combination.java
new file mode 100644
index 000000000..a30c46d09
--- /dev/null
+++ b/test/java/Combination.java
@@ -0,0 +1,74 @@
+import static org.junit.Assert.assertEquals;
+import org.junit.Before;
+import org.junit.Test;
+
+import edu.nyu.acsys.CVC4.*;
+
+public class Combination {
+  static {
+    System.loadLibrary("cvc4jni");
+  }
+  ExprManager em;
+  SmtEngine smt;
+
+  @Before
+  public void initialize() {
+    em = new ExprManager();
+    smt = new SmtEngine(em);
+  }
+
+  @Test
+  public void evaluatesExpression() {
+    smt.setOption("tlimit", new SExpr(100));
+    smt.setOption("produce-models", new SExpr(true)); // Produce Models
+    smt.setOption("output-language", new SExpr("cvc4")); // output-language
+    smt.setOption("default-dag-thresh", new SExpr(0)); //Disable dagifying the output
+    smt.setLogic("QF_UFLIRA");
+
+    // Sorts
+    SortType u = em.mkSort("u");
+    Type integer = em.integerType();
+    Type booleanType = em.booleanType();
+    Type uToInt = em.mkFunctionType(u, integer);
+    Type intPred = em.mkFunctionType(integer, booleanType);
+
+    // Variables
+    Expr x = em.mkVar("x", u);
+    Expr y = em.mkVar("y", u);
+
+    // Functions
+    Expr f = em.mkVar("f", uToInt);
+    Expr p = em.mkVar("p", intPred);
+
+    // Constants
+    Expr zero = em.mkConst(new Rational(0));
+    Expr one = em.mkConst(new Rational(1));
+
+    // Terms
+    Expr f_x = em.mkExpr(Kind.APPLY_UF, f, x);
+    Expr f_y = em.mkExpr(Kind.APPLY_UF, f, y);
+    Expr sum = em.mkExpr(Kind.PLUS, f_x, f_y);
+    Expr p_0 = em.mkExpr(Kind.APPLY_UF, p, zero);
+    Expr p_f_y = em.mkExpr(Kind.APPLY_UF, p, f_y);
+
+    // Construct the assumptions
+    Expr assumptions =
+      em.mkExpr(Kind.AND,
+                em.mkExpr(Kind.LEQ, zero, f_x), // 0 <= f(x)
+                em.mkExpr(Kind.LEQ, zero, f_y), // 0 <= f(y)
+                em.mkExpr(Kind.LEQ, sum, one),  // f(x) + f(y) <= 1
+                p_0.notExpr(),                  // not p(0)
+                p_f_y);                         // p(f(y))
+    smt.assertFormula(assumptions);
+
+    assertEquals(
+        Result.Validity.VALID,
+        smt.query(em.mkExpr(Kind.DISTINCT, x, y)).isValid()
+    );
+
+    assertEquals(
+        Result.Sat.SAT,
+        smt.checkSat(em.mkConst(true)).isSat()
+    );
+  }
+}