/* $HeadURL$
* $Id$
*
* Copyright (c) 2009-2010 DuraSpace
* http://duraspace.org
*
* In collaboration with Topaz Inc.
* http://www.topazproject.org
*
* 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.akubraproject.impl;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.InputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.net.URI;
import java.util.Iterator;
import java.util.Map;
import org.testng.annotations.Test;
import static org.testng.Assert.assertEquals;
import org.akubraproject.Blob;
import org.akubraproject.BlobStoreConnection;
/**
* Unit Tests for {@link StreamManager}.
*
* @author Chris Wilper
*/
public class TestStreamManager {
private final StreamManager manager = new StreamManager();
/**
* Manager should start with no tracked streams.
*/
@Test(groups = { "init" })
public void testInitialState() {
assertEquals(manager.getOpenOutputStreamCount(), 0);
assertEquals(manager.getOpenInputStreamCount(), 0);
}
/**
* Managed OutputStreams should be tracked when open and forgotten when closed.
*/
@Test(dependsOnGroups = { "init" })
public void testManageOutputStream() throws Exception {
OutputStream managed = manager.manageOutputStream(null, new ByteArrayOutputStream());
assertEquals(manager.getOpenOutputStreamCount(), 1);
managed.close();
assertEquals(manager.getOpenOutputStreamCount(), 0);
}
/**
* Managed InputStreams should be tracked when open and forgotten when closed.
*/
@Test(dependsOnGroups = { "init" })
public void testManageInputStream() throws Exception {
InputStream managed = manager.manageInputStream(null, new ByteArrayInputStream(new byte[0]));
assertEquals(manager.getOpenInputStreamCount(), 1);
managed.close();
assertEquals(manager.getOpenInputStreamCount(), 0);
}
/**
* Managed Streams should be tracked when open and closed when connection is closed.
*/
@Test(dependsOnGroups = { "init" })
public void testTrackedConnectionCloses() throws Exception {
BlobStoreConnection con1 = new MockConnection(manager);
BlobStoreConnection con2 = new MockConnection(manager);
manager.manageInputStream(con1, new ByteArrayInputStream(new byte[0]));
manager.manageOutputStream(con1, new ByteArrayOutputStream());
assertEquals(manager.getOpenInputStreamCount(), 1);
assertEquals(manager.getOpenOutputStreamCount(), 1);
manager.manageInputStream(con2, new ByteArrayInputStream(new byte[0]));
manager.manageOutputStream(con2, new ByteArrayOutputStream());
assertEquals(manager.getOpenInputStreamCount(), 2);
assertEquals(manager.getOpenOutputStreamCount(), 2);
con1.close();
assertEquals(manager.getOpenInputStreamCount(), 1);
assertEquals(manager.getOpenOutputStreamCount(), 1);
con2.close();
assertEquals(manager.getOpenInputStreamCount(), 0);
assertEquals(manager.getOpenOutputStreamCount(), 0);
}
private static class MockConnection extends AbstractBlobStoreConnection {
public MockConnection(StreamManager manager) {
super(null, manager);
}
@Override
public Blob getBlob(URI blobId, Map<String, String> hints) throws IOException {
return null;
}
@Override
public Iterator<URI> listBlobIds(String filterPrefix) throws IOException {
return null;
}
@Override
public void sync() throws IOException {
}
}
}