/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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.
 */

package org.apache.hadoop.classification;

import java.lang.annotation.Documented;
import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;

/**
 * Annotates a program element that exists, or is more widely visible than
 * otherwise necessary, specifically for use in test code.
 * More precisely <i>test code within the hadoop-* modules</i>.
 * Moreover, this gives the implicit scope and stability of:
 * <pre>
 *   {@link InterfaceAudience.Private}
 *   {@link InterfaceStability.Unstable}
 * </pre>
 * If external modules need to access/override these methods, then
 * they MUST be re-scoped as public/limited private.
 */
@Retention(RetentionPolicy.CLASS)
@Target({ ElementType.TYPE, ElementType.METHOD, ElementType.FIELD, ElementType.CONSTRUCTOR })
@Documented
public @interface VisibleForTesting {
}
