001/*
002 * Copyright 2023 the original author or authors.
003 * <p>
004 * Licensed under the Apache License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 * <p>
008 * https://www.apache.org/licenses/LICENSE-2.0
009 * <p>
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 */
016package de.cuioss.test.generator.junit;
017
018import static java.lang.annotation.ElementType.TYPE;
019import static java.lang.annotation.RetentionPolicy.RUNTIME;
020
021import java.lang.annotation.Retention;
022import java.lang.annotation.Target;
023
024import org.junit.jupiter.api.extension.ExtendWith;
025
026/**
027 * <h2>Purpose and Usage</h2> This annotation is meant to be set on a junit 5
028 * test-case. It controls the generator subsystem and, in case of test-failures,
029 * provides information, that can be used for repeating the failed tests with a
030 * fixed seed for the generators, see {@link GeneratorSeed} for details. This
031 * fixed seed results in the generators reproducing the exact same test-data.
032 * Sample output:
033 *
034 * <pre>
035GeneratorController seed was 4711L.
036Use a fixed seed by applying @GeneratorSeed(4711L) for the method/class,
037or by using the system property '-Dde.cuioss.test.generator.seed=4711'
038 * </pre>
039 *
040 * <h2>Implementation</h2> Shorthand for enabling
041 * {@link GeneratorControllerExtension} for a certain test-class. This type is
042 * equivalent to {@link ExtendWith} {@link GeneratorControllerExtension}
043 *
044 * @author Oliver Wolff
045 *
046 */
047@Retention(RUNTIME)
048@Target(TYPE)
049@ExtendWith(GeneratorControllerExtension.class)
050public @interface EnableGeneratorController {
051
052}