org.mockito.internal.util.reflection.Whitebox Maven / Gradle / Ivy
/*
* Copyright (c) 2007 Mockito contributors
* This program is made available under the terms of the MIT License.
*/
package org.mockito.internal.util.reflection;
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 set 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 set value to 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;
}
}
}