package org.apache.maven.shared.release.exec;

/*
 * 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.
 */

import junit.framework.TestCase;

import java.io.ByteArrayOutputStream;
import java.io.PrintStream;

/**
 * Test the output stream that tees output both to a stream and into an internal buffer for later.
 *
 * @author Benjamin Bentmann
 * @version $Id$
 */
public class TeeOutputStreamTest
    extends TestCase
{
    private TeeOutputStream stream;

    private ByteArrayOutputStream out;

    private static final String LS = System.getProperty( "line.separator" );

    @Override
    protected void setUp()
        throws Exception
    {
        super.setUp();

        out = new ByteArrayOutputStream();
        stream = new TeeOutputStream( new PrintStream( out ), "xxx " );
    }

    public void testConsumeLine()
        throws Exception
    {
        stream.write( ( "the first line" + LS + "line2" + LS + "3" + LS ).getBytes() );

        assertEquals( "Check output", "xxx the first line" + LS + "xxx line2" + LS + "xxx 3" + LS, out.toString() );

        assertEquals( "Check content", "the first line" + LS + "line2" + LS + "3" + LS, stream.getContent() );

        assertEquals( "Check toString", "the first line" + LS + "line2" + LS + "3" + LS, stream.toString() );
    }
}
