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/*
*
* 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.qpid.junit.extensions;
import org.apache.qpid.junit.extensions.util.StackQueue;
import java.util.LinkedList;
import java.util.Queue;
/**
* SetupTaskHandler implements a task stack. It can be used, by delegation, as a base implementation for tests that want
* to have configurable setup/teardown task stacks. Typically it is up to the test implementation to decide whether the
* stack is executed in the setup/teardown methods or in the threadSetup/threadTeaddown methods.
*
* <p/><table id="crc"><caption>CRC Card</caption>
* <tr><th> Responsibilities <th> Collaborations
* <tr><td> Handle injection of set up tasks.
* <tr><td> Handle injection of tear down tasks.
* <tr><td> Run set up tasks in chain order.
* <tr><td> Run tear down tasks in reverse chain order.
* </table>
*
* @author Rupert Smith
*/
public class SetupTaskHandler implements SetupTaskAware
{
/** Holds the set up tasks. */
Queue<Runnable> setups = new LinkedList<Runnable>();
/** Holds the tear down tasks. */
Queue<Runnable> teardowns = new StackQueue<Runnable>();
/**
* Adds the specified task to the tests setup.
*
* @param task The task to add to the tests setup.
*/
public void chainSetupTask(Runnable task)
{
setups.offer(task);
}
/**
* Adds the specified task to the tests tear down.
*
* @param task The task to add to the tests tear down.
*/
public void chainTearDownTask(Runnable task)
{
teardowns.offer(task);
}
/**
* Runs the set up tasks in the order that they way chained.
*/
public void runSetupTasks()
{
while (!setups.isEmpty())
{
setups.remove().run();
}
}
/**
* Runs the tear down tasks in the reverse of the order in which they were chained.
*/
public void runTearDownTasks()
{
while (!teardowns.isEmpty())
{
teardowns.remove().run();
}
}
}
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