/*
* 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.io.input;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.InputStream;
import junit.framework.TestCase;
/**
* JUnit Test Case for {@link TeeInputStream}.
*/
public class TeeInputStreamTest extends TestCase {
private final String ASCII = "US-ASCII";
private InputStream tee;
private ByteArrayOutputStream output;
protected void setUp() throws Exception {
InputStream input = new ByteArrayInputStream("abc".getBytes(ASCII));
output = new ByteArrayOutputStream();
tee = new TeeInputStream(input, output);
}
public void testReadNothing() throws Exception {
assertEquals("", new String(output.toString(ASCII)));
}
public void testReadOneByte() throws Exception {
assertEquals('a', tee.read());
assertEquals("a", new String(output.toString(ASCII)));
}
public void testReadEverything() throws Exception {
assertEquals('a', tee.read());
assertEquals('b', tee.read());
assertEquals('c', tee.read());
assertEquals(-1, tee.read());
assertEquals("abc", new String(output.toString(ASCII)));
}
public void testReadToArray() throws Exception {
byte[] buffer = new byte[8];
assertEquals(3, tee.read(buffer));
assertEquals('a', buffer[0]);
assertEquals('b', buffer[1]);
assertEquals('c', buffer[2]);
assertEquals(-1, tee.read(buffer));
assertEquals("abc", new String(output.toString(ASCII)));
}
public void testReadToArrayWithOffset() throws Exception {
byte[] buffer = new byte[8];
assertEquals(3, tee.read(buffer, 4, 4));
assertEquals('a', buffer[4]);
assertEquals('b', buffer[5]);
assertEquals('c', buffer[6]);
assertEquals(-1, tee.read(buffer, 4, 4));
assertEquals("abc", new String(output.toString(ASCII)));
}
public void testSkip() throws Exception {
assertEquals('a', tee.read());
assertEquals(1, tee.skip(1));
assertEquals('c', tee.read());
assertEquals(-1, tee.read());
assertEquals("ac", new String(output.toString(ASCII)));
}
public void testMarkReset() throws Exception {
assertEquals('a', tee.read());
tee.mark(1);
assertEquals('b', tee.read());
tee.reset();
assertEquals('b', tee.read());
assertEquals('c', tee.read());
assertEquals(-1, tee.read());
assertEquals("abbc", new String(output.toString(ASCII)));
}
}