/*
* 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.commons.compress;
import static org.apache.commons.compress.AbstractTestCase.getFile;
import java.io.BufferedInputStream;
import java.io.ByteArrayInputStream;
import java.io.FileInputStream;
import java.io.IOException;
import junit.framework.TestCase;
import org.apache.commons.compress.compressors.CompressorException;
import org.apache.commons.compress.compressors.CompressorInputStream;
import org.apache.commons.compress.compressors.CompressorStreamFactory;
import org.apache.commons.compress.compressors.bzip2.BZip2CompressorInputStream;
import org.apache.commons.compress.compressors.gzip.GzipCompressorInputStream;
import org.apache.commons.compress.compressors.pack200.Pack200CompressorInputStream;
import org.apache.commons.compress.compressors.xz.XZCompressorInputStream;
public final class DetectCompressorTestCase extends TestCase {
public DetectCompressorTestCase(String name) {
super(name);
}
final CompressorStreamFactory factory = new CompressorStreamFactory();
public void testDetection() throws Exception {
CompressorInputStream bzip2 = getStreamFor("bla.txt.bz2");
assertNotNull(bzip2);
assertTrue(bzip2 instanceof BZip2CompressorInputStream);
CompressorInputStream gzip = getStreamFor("bla.tgz");
assertNotNull(gzip);
assertTrue(gzip instanceof GzipCompressorInputStream);
CompressorInputStream pack200 = getStreamFor("bla.pack");
assertNotNull(pack200);
assertTrue(pack200 instanceof Pack200CompressorInputStream);
CompressorInputStream xz = getStreamFor("bla.tar.xz");
assertNotNull(xz);
assertTrue(xz instanceof XZCompressorInputStream);
try {
factory.createCompressorInputStream(new ByteArrayInputStream(new byte[0]));
fail("No exception thrown for an empty input stream");
} catch (CompressorException e) {
// expected
}
}
private CompressorInputStream getStreamFor(String resource)
throws CompressorException, IOException {
return factory.createCompressorInputStream(
new BufferedInputStream(new FileInputStream(
getFile(resource))));
}
}