/*
* Copyright 2013 Red Hat Inc. and/or its affiliates and other contributors.
*
* 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 org.switchyard.transform.xslt.internal;
import java.io.InputStream;
import javax.xml.transform.Templates;
import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.stream.StreamSource;
import junit.framework.Assert;
import org.junit.Test;
import org.switchyard.transform.xslt.internal.TransformerPool;
import org.switchyard.transform.xslt.internal.XsltUriResolver;
public class TransformerPoolTest {
private static final String XSLT = "org/switchyard/transform/xslt/internal/topics.xslt";
private Templates templates;
public TransformerPoolTest() throws Exception {
TransformerFactory tFactory = TransformerFactory.newInstance();
tFactory.setURIResolver(new XsltUriResolver());
InputStream xsltStream = this.getClass().getClassLoader().getResourceAsStream(XSLT);
templates = tFactory.newTemplates(new StreamSource(xsltStream));
}
@Test
public void takeAndGive() throws Exception {
TransformerPool pool = new TransformerPool(templates, 1);
Transformer t1 = pool.take();
Assert.assertNotNull(t1);
pool.give(t1);
Transformer t2 = pool.take();
Assert.assertNotNull(t2);
Assert.assertEquals(t1, t2);
}
@Test
public void blockOnTake() throws Exception {
final TransformerPool pool = new TransformerPool(templates, 3);
// draw down the pool
pool.take();
pool.take();
final Transformer t = pool.take();
// spin up a thread to offer back
new Thread() {
public void run() {
try {
Thread.sleep(2000);
pool.give(t);
} catch (Exception ex) {
ex.printStackTrace();
Assert.fail();
}
}
}.start();
// This will block until the give from our thread above
Transformer t2 = pool.take();
Assert.assertEquals(t, t2);
}
}