support enum testing

MyEnumField.java

@@ -0,0 +1,20 @@
+package org.json.junit;
+
+public enum MyEnumField {
+    VAL1(1, "val 1"),
+    VAL2(2, "val 2"),
+    VAL3(3, "val 3");
+
+    private String value;
+    private Integer intVal;
+    private MyEnumField(Integer intVal, String value) {
+        this.value = value;
+        this.intVal = intVal;
+    }
+    public String getValue() {
+        return value;
+    }
+    public Integer getIntVal() {
+        return intVal;
+    }
+}