--- /dev/null
+/*-
+ * ============LICENSE_START=======================================================
+ * ONAP : APPC
+ * ================================================================================
+ * Copyright (C) 2018 AT&T Intellectual Property. All rights reserved.
+ * ================================================================================
+ * Copyright (c) 2007 Mockito contributors
+ * =============================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ECOMP is a trademark and service mark of AT&T Intellectual Property.
+ * ============LICENSE_END=========================================================
+ */
+
+package org.onap.appc.provider;
+
+import java.lang.reflect.Field;
+
+public class Whitebox {
+ public static Object getInternalState(Object target, String field) {
+ Class<?> c = target.getClass();
+ try {
+ Field f = getFieldFromHierarchy(c, field);
+ f.setAccessible(true);
+ return f.get(target);
+ } catch (Exception e) {
+ throw new RuntimeException("Unable to get internal state on a private field. Please report to mockito mailing list.", e);
+ }
+ }
+
+ public static void setInternalState(Object target, String field, Object value) {
+ Class<?> c = target.getClass();
+ try {
+ Field f = getFieldFromHierarchy(c, field);
+ f.setAccessible(true);
+ f.set(target, value);
+ } catch (Exception e) {
+ throw new RuntimeException("Unable to set internal state on a private field. Please report to mockito mailing list.", e);
+ }
+ }
+
+ private static Field getFieldFromHierarchy(Class<?> clazz, String field) {
+ Field f = getField(clazz, field);
+ while (f == null && clazz != Object.class) {
+ clazz = clazz.getSuperclass();
+ f = getField(clazz, field);
+ }
+ if (f == null) {
+ throw new RuntimeException(
+ "You want me to get this field: '" + field +
+ "' on this class: '" + clazz.getSimpleName() +
+ "' but this field is not declared withing hierarchy of this class!");
+ }
+ return f;
+ }
+
+ private static Field getField(Class<?> clazz, String field) {
+ try {
+ return clazz.getDeclaredField(field);
+ } catch (NoSuchFieldException e) {
+ return null;
+ }
+ }
+}
+