reorganize classes so test data is separate from test cases

src/test/java/org/json/junit/data/MyEnumField.java

@@ -0,0 +1,28 @@
+package org.json.junit.data;
+
+/**
+ * An enum that contains getters and some internal fields
+ */
+@SuppressWarnings("boxing")
+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 this.value;
+    }
+    public Integer getIntVal() {
+        return this.intVal;
+    }
+    @Override
+    public String toString(){
+        return this.value;
+    }
+}