migrate powermock to mockito appc provider

[appc.git] / appc-provider / appc-provider-bundle / src / test / java / org / onap / appc / provider / Whitebox.java

diff --git a/appc-provider/appc-provider-bundle/src/test/java/org/onap/appc/provider/Whitebox.java b/appc-provider/appc-provider-bundle/src/test/java/org/onap/appc/provider/Whitebox.java
new file mode 100644 (file)
index 0000000..e065d1e
--- /dev/null
+++ b/appc-provider/appc-provider-bundle/src/test/java/org/onap/appc/provider/Whitebox.java
@@ -0,0 +1,75 @@
+/*-
+ * ============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;
+        }
+    }
+}
+