/*
* 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.james.util.retry;
import java.util.ArrayList;
import java.util.List;
import javax.naming.Context;
import org.apache.james.util.retry.api.ExceptionRetryingProxy;
import org.apache.james.util.retry.api.RetryHandler;
import org.apache.james.util.retry.api.RetrySchedule;
import static org.junit.Assert.*;
import org.junit.Before;
import org.junit.Test;
/**
* <code>ExceptionRetryHandlerTest</code>
*/
public class ExceptionRetryHandlerTest {
private Class<?>[] _exceptionClasses = null;
private ExceptionRetryingProxy _proxy = null;
private RetrySchedule _schedule = null;
/**
* @see junit.framework.TestCase#setUp()
*/
@Before
public void setUp() throws Exception {
_exceptionClasses = new Class<?>[]{Exception.class};
_proxy = new TestRetryingProxy();
_schedule = new TestRetrySchedule();
}
private class TestRetryingProxy implements ExceptionRetryingProxy {
/**
*/
@Override
public Context getDelegate() {
return null;
}
/**
*/
@Override
public Context newDelegate() throws Exception {
return null;
}
/**
*/
@Override
public void resetDelegate() throws Exception {
}
}
private class TestRetrySchedule implements RetrySchedule {
/**
*/
@Override
public long getInterval(int index) {
return index;
}
}
/**
* Test method for .
*/
@Test
public final void testExceptionRetryHandler() {
assertTrue(RetryHandler.class.isAssignableFrom(new ExceptionRetryHandler(
_exceptionClasses, _proxy, _schedule, 0) {
@Override
public Object operation() throws Exception {
return null;
}
}.getClass()));
}
/**
* Test method for .
* @throws Exception
*/
@Test
public final void testPerform() throws Exception {
Object result = new ExceptionRetryHandler(
_exceptionClasses, _proxy, _schedule, 0) {
@Override
public Object operation() throws Exception {
return "Hi!";
}
}.perform();
assertEquals("Hi!", result);
try {
new ExceptionRetryHandler(
_exceptionClasses, _proxy, _schedule, 0) {
@Override
public Object operation() throws Exception {
throw new Exception();
}
}.perform();
} catch (Exception ex) {
// no-op
}
assertEquals("Hi!", result);
}
/**
* Test method for .
*/
@Test
public final void testPostFailure() {
final List<Exception> results = new ArrayList<Exception>();
RetryHandler handler = new ExceptionRetryHandler(
_exceptionClasses, _proxy, _schedule, 7) {
@Override
public void postFailure(Exception ex, int retryCount) {
super.postFailure(ex, retryCount);
results.add(ex);
}
@Override
public Object operation() throws Exception {
throw new Exception();
}
};
try {
handler.perform();
} catch (Exception ex) {
// no-op
}
assertEquals(7, results.size());
}
/**
* Test method for .
* @throws Exception
*/
@Test
public final void testOperation() throws Exception {
RetryHandler handler = new ExceptionRetryHandler(
_exceptionClasses, _proxy, _schedule, 0) {
@Override
public Object operation() throws Exception {
return "Hi!";
}
};
assertEquals("Hi!", handler.operation());
}
/**
* Test method for .
*/
@Test
public final void testGetRetryInterval() {
ExceptionRetryHandler handler = new ExceptionRetryHandler(
_exceptionClasses, _proxy, _schedule, 0) {
@Override
public Object operation() throws Exception {
return null;
}
};
assertEquals(8, handler.getRetryInterval(8));
}
}