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/*
 * Copyright 2017 Avanza Bank AB
 *
 * 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.
 */
package com.avanza.gs.test;

import org.junit.rules.TestRule;
import org.junit.runner.Description;
import org.junit.runners.model.Statement;

/**
 * JUnit4 {@code TestRule} implementation of {@code StandaloneRunningPu}.
 * 
 * Example usage in a JUnit 4 test class:
 * 
 * @Rule
 * public RunningPu runningPu = PuConfigurers.partitionedPu("pu.xml")
 *                                           .configure();
 * 
 */
public final class RunningPu extends StandaloneRunningPu implements TestRule {

	public RunningPu(PuRunner runner) {
		super(runner);
	}

	@Override
	public Statement apply(final Statement base, Description description) {
		return new Statement() {
			@Override
			public void evaluate() throws Throwable {
				try {
					if (isAutostart()) {
						start();
					}
					base.evaluate();
				} finally {
					try {
						stop();
					} catch (Exception e) {
						// Ignore
					}
				}
			}
		};
	}
}