TestExtensibleBufferedInputStream.java

/*
 * JBoss, Home of Professional Open Source.
 * See the COPYRIGHT.txt file distributed with this work for information
 * regarding copyright ownership.  Some portions may be licensed
 * to Red Hat, Inc. under one or more contributor license agreements.
 * 
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 * 
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 * 
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
 * 02110-1301 USA.
 */

package org.teiid.common.buffer;

import static org.junit.Assert.*;

import java.io.IOException;
import java.io.InputStream;
import java.nio.ByteBuffer;

import org.junit.Test;

public class TestExtensibleBufferedInputStream {
	
	@Test public void testReset() throws IOException {
		InputStream is = new ExtensibleBufferedInputStream() {
			boolean returned = false;
			@Override
			protected ByteBuffer nextBuffer() throws IOException {
				if (returned) {
					return null;
				}
				ByteBuffer result = ByteBuffer.allocate(3);
				returned = true;
				return result;
			}
		};
		is.read();
		is.read();
		is.reset();
		for (int i = 0; i < 3; i++) {
			assertEquals(0, is.read());
		}
		assertEquals(-1, is.read());
	}

}