package org.apache.lucene.util;
import java.util.ArrayList;
import org.junit.After;
import org.junit.AfterClass;
import org.junit.rules.RuleChain;
import org.junit.rules.TestRule;
import org.junit.runner.Description;
import org.junit.runners.model.MultipleFailureException;
import org.junit.runners.model.Statement;
/*
* 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.
*/
/**
* A {@link TestRule} that guarantees the execution of {@link #after} even
* if an exception has been thrown from delegate {@link Statement}. This is much
* like {@link AfterClass} or {@link After} annotations but can be used with
* {@link RuleChain} to guarantee the order of execution.
*/
abstract class AbstractBeforeAfterRule implements TestRule {
@Override
public Statement apply(final Statement s, final Description d) {
return new Statement() {
@Override
public void evaluate() throws Throwable {
final ArrayList<Throwable> errors = new ArrayList<Throwable>();
try {
before();
s.evaluate();
} catch (Throwable t) {
errors.add(t);
}
try {
after();
} catch (Throwable t) {
errors.add(t);
}
MultipleFailureException.assertEmpty(errors);
}
};
}
protected void before() throws Exception {}
protected void after() throws Exception {}
}