Add more tests for optional

Author: sink772

unittest/src/test/java/score/CallTest.java

@@ -30,6 +30,7 @@
 import java.util.List;
 
 import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertNull;
 import static org.junit.jupiter.api.Assertions.assertThrows;
 
 public class CallTest extends TestBase {
@@ -47,6 +48,16 @@ public String echo(@Optional String message) {
             return message;
         }
 
+        @External(readonly=true)
+        public Address echoAddress(@Optional Address _addr) {
+            return _addr;
+        }
+
+        @External(readonly=true)
+        public byte[] echoByteArray(@Optional byte[] _data) {
+            return _data;
+        }
+
         @External(readonly=true)
         public boolean echoBoolean(@Optional boolean bool) {
             return bool;
@@ -145,12 +156,15 @@ void parameterConversions_array() {
 
     @Test
     void parameterConversions_Optional() {
-        assertEquals(null, echoScore.call("echo"));
-        assertEquals(BigInteger.ZERO, echoScore.call( "echoBigInteger"));
-        assertEquals(0, echoScore.call( "echoInteger"));
+        assertNull(echoScore.call("echo"));
+        assertNull(echoScore.call("echoAddress"));
+        assertNull(echoScore.call("echoByteArray"));
+        assertEquals(BigInteger.ZERO, echoScore.call("echoBigInteger"));
+        assertEquals(BigInteger.ONE, echoScore.call("echoBigInteger", BigInteger.ONE));
+
+        assertEquals(0, echoScore.call("echoInteger"));
         assertEquals(Short.valueOf("0"), echoScore.call("echoShort"));
         assertEquals(Long.valueOf("0"), echoScore.call("echoLong"));
-
         assertEquals(Character.MIN_VALUE, echoScore.call("echoChar"));
         assertEquals(Byte.valueOf("0"), echoScore.call("echoByte"));
         assertEquals(Boolean.FALSE, echoScore.call("echoBoolean"));