/*
* 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.sling.distribution.util.impl;
import static org.apache.commons.io.IOUtils.copy;
import static org.junit.Assert.assertArrayEquals;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNull;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertTrue;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.util.Arrays;
import java.util.List;
import java.util.Random;
import org.apache.sling.distribution.util.impl.FileBackedMemoryOutputStream.MemoryUnit;
import org.junit.Test;
/**
* Tests for {@link org.apache.sling.distribution.util.impl.FileBackedMemoryOutputStream}
*/
public class FileBackedMemoryOutputStreamTest {
@Test
public void justKeepDataInMemory() throws IOException {
FileBackedMemoryOutputStream output = new FileBackedMemoryOutputStream(10,
MemoryUnit.BYTES,
false,
new File("/tmp"),
"FileBackedMemoryOutputStreamTest.justKeepDataInMemory",
".tmp");
byte[] data = newDataArray(2);
output.write(data);
output.close();
assertEquals(2, output.size());
assertNull(output.getFile());
verifyWrittenData(data, output);
}
@Test
public void backedToFile() throws IOException {
FileBackedMemoryOutputStream output = new FileBackedMemoryOutputStream(10,
MemoryUnit.BYTES,
false,
new File("/tmp"),
"FileBackedMemoryOutputStreamTest.backedToFile",
".tmp");
byte[] data = newDataArray(100);
output.write(data);
output.close();
assertEquals(100, output.size());
assertNotNull(output.getFile());
assertTrue(output.getFile().exists());
assertEquals(90, output.getFile().length());
verifyWrittenData(data, output);
output.clean();
assertFalse(output.getFile().exists());
}
@Test
public void multiBackedToFileTest() throws IOException {
List<byte[]> datum = Arrays.asList(newDataArray(0), newDataArray(1), newDataArray(9),
newDataArray(10), newDataArray(11), newDataArray(100), newDataArray(1000));
for (byte[] data : datum) {
FileBackedMemoryOutputStream output = new FileBackedMemoryOutputStream(10,
MemoryUnit.BYTES,false, new File("/tmp"),
"FileBackedMemoryOutputStreamTest.multiTest-" + data.length, ".tmp");
output.write(data);
output.close();
assertEquals(data.length, output.size());
verifyWrittenData(data, output);
}
}
private byte[] newDataArray(int size) {
byte[] data = new byte[size];
byte b = (byte) (new Random().nextInt() & 0xff);
Arrays.fill(data, b);
return data;
}
private void verifyWrittenData(byte[] expecteds, FileBackedMemoryOutputStream writtenData) throws IOException {
InputStream input = writtenData.openWrittenDataInputStream();
ByteArrayOutputStream output = new ByteArrayOutputStream();
copy(input, output);
byte[] actuals = output.toByteArray();
assertArrayEquals(expecteds, actuals);
}
}