diff --git a/payments-api/src/test/java/com/intuit/payment/util/JsonUtilTest.java b/payments-api/src/test/java/com/intuit/payment/util/JsonUtilTest.java
index 63147388..112210d5 100755
--- a/payments-api/src/test/java/com/intuit/payment/util/JsonUtilTest.java
+++ b/payments-api/src/test/java/com/intuit/payment/util/JsonUtilTest.java
@@ -30,24 +30,52 @@
  *
  */
 public class JsonUtilTest {
-	
+
+	// Test class used to ensure exception is thrown inside of JsonUtil
+	public class ClassWithPrivateFields {
+		ClassWithPrivateFields(int id, String name){
+			id = id;
+			name = name;
+		}
+		int id;
+		String name;
+	}
 
 	@Test
-	public void testSerialize() throws SerializationException{			
+	public void testSerialize() throws SerializationException {
 		Card card = new Card.Builder().number("12345").build();
 		String cardStr = JsonUtil.serialize(card);
 		Assert.assertNotNull(cardStr);
 		String result = "{\n  \"number\" : \"12345\"\n}";
 		Assert.assertEquals(cardStr, result);
 	}
-	
+
+	@Test
+	public void testNullSerialize() throws SerializationException {
+		String cardStr = JsonUtil.serialize(null);
+		Assert.assertNull(cardStr);
+	}
+
+	@Test(expectedExceptions = SerializationException.class)
+	public void testErrorSerialize() throws SerializationException {
+		// Serializing this causes a InvalidDefinitionException to be thrown
+		ClassWithPrivateFields classWithPrivateFields = new ClassWithPrivateFields(1, "John");
+		JsonUtil.serialize(classWithPrivateFields);
+	}
+
 	@Test
     public void testDeserialize() throws SerializationException {
         String cardStr = "{\"number\":\"12345\"}";
         Card card = (Card) JsonUtil.deserialize(cardStr,  new TypeReference<Card>() {} );
         Assert.assertEquals(card.getNumber(), "12345");
     }
-	
+
+	@Test(expectedExceptions = SerializationException.class)
+	public void testErrorDeserialize() throws SerializationException {
+		String cardStr = "{\"number\":\"12345\"\"}";
+		JsonUtil.deserialize(cardStr,  new TypeReference<Card>() {} );
+	}
+
 	@SuppressWarnings("unchecked")
 	@Test
     public void testDeserializeList() throws SerializationException {
@@ -57,5 +85,5 @@ public void testDeserializeList() throws SerializationException {
         Assert.assertEquals(cards.get(0).getNumber(), "12345");
     }
 
-  
+
 }