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/****************************************************************
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* Licensed to the Apache Software Foundation (ASF) under one *
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* or more contributor license agreements. See the NOTICE file *
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* distributed with this work for additional information *
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* regarding copyright ownership. The ASF licenses this file *
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* to you under the Apache License, Version 2.0 (the *
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* "License"); you may not use this file except in compliance *
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* with the License. You may obtain a copy of the License at *
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* http://www.apache.org/licenses/LICENSE-2.0 *
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* Unless required by applicable law or agreed to in writing, *
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* software distributed under the License is distributed on an *
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* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY *
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* KIND, either express or implied. See the License for the *
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* specific language governing permissions and limitations *
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* under the License. *
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****************************************************************/
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package org.apache.james.mime4j.io;
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import java.io.ByteArrayInputStream;
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import java.io.IOException;
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import junit.framework.TestCase;
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public class PositionInputStreamTest extends TestCase {
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public void testPositionCounting() throws IOException {
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byte[] data = new byte[] {'0', '1', '2', '3', '4', '5', '6'};
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ByteArrayInputStream instream = new ByteArrayInputStream(data);
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PositionInputStream countingStream = new PositionInputStream(instream);
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assertEquals(0, countingStream.getPosition());
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assertTrue(countingStream.read() != -1);
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assertEquals(1, countingStream.getPosition());
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byte[] tmp = new byte[3];
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assertEquals(3, countingStream.read(tmp));
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assertEquals(4, countingStream.getPosition());
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assertEquals(2, countingStream.skip(2));
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assertEquals(6, countingStream.getPosition());
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assertTrue(countingStream.read() != -1);
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assertEquals(7, countingStream.getPosition());
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assertTrue(countingStream.read() == -1);
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assertEquals(7, countingStream.getPosition());
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assertTrue(countingStream.read() == -1);
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assertEquals(7, countingStream.getPosition());
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assertTrue(countingStream.read(tmp) == -1);
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assertEquals(7, countingStream.getPosition());
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assertTrue(countingStream.read(tmp) == -1);
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assertEquals(7, countingStream.getPosition());