src/test/java/org/apache/commons/compress/archivers/ArchiveStreamFactoryTest.java

/*
 * 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
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 * KIND, either express or implied.  See the License for the
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package org.apache.commons.compress.archivers;

import static org.junit.Assert.assertTrue;
import static org.junit.Assert.fail;

import java.io.ByteArrayInputStream;

import org.junit.Test;

public class ArchiveStreamFactoryTest {

    /**
     * see https://issues.apache.org/jira/browse/COMPRESS-171
     */
    @Test
    public void shortTextFilesAreNoTARs() throws Exception {
        try {
            new ArchiveStreamFactory()
                .createArchiveInputStream(new ByteArrayInputStream("This certainly is not a tar archive, really, no kidding".getBytes()));
            fail("created an input stream for a non-archive");
        } catch (ArchiveException ae) {
            assertTrue(ae.getMessage().startsWith("No Archiver found"));
        }
    }

}