1 | /**************************************************************** |
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2 | * Licensed to the Apache Software Foundation (ASF) under one * |
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3 | * or more contributor license agreements. See the NOTICE file * |
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4 | * distributed with this work for additional information * |
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5 | * regarding copyright ownership. The ASF licenses this file * |
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6 | * to you under the Apache License, Version 2.0 (the * |
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7 | * "License"); you may not use this file except in compliance * |
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8 | * with the License. You may obtain a copy of the License at * |
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9 | * * |
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10 | * http://www.apache.org/licenses/LICENSE-2.0 * |
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11 | * * |
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12 | * Unless required by applicable law or agreed to in writing, * |
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13 | * software distributed under the License is distributed on an * |
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14 | * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY * |
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15 | * KIND, either express or implied. See the License for the * |
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16 | * specific language governing permissions and limitations * |
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17 | * under the License. * |
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18 | ****************************************************************/ |
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19 | |
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20 | package org.apache.james.mime4j.io; |
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21 | |
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22 | import java.io.ByteArrayInputStream; |
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23 | import java.io.IOException; |
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24 | |
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25 | import junit.framework.TestCase; |
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26 | |
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27 | public class PositionInputStreamTest extends TestCase { |
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28 | |
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29 | public void testPositionCounting() throws IOException { |
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30 | byte[] data = new byte[] {'0', '1', '2', '3', '4', '5', '6'}; |
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31 | ByteArrayInputStream instream = new ByteArrayInputStream(data); |
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32 | PositionInputStream countingStream = new PositionInputStream(instream); |
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33 | assertEquals(0, countingStream.getPosition()); |
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34 | assertTrue(countingStream.read() != -1); |
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35 | assertEquals(1, countingStream.getPosition()); |
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36 | byte[] tmp = new byte[3]; |
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37 | assertEquals(3, countingStream.read(tmp)); |
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38 | assertEquals(4, countingStream.getPosition()); |
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39 | assertEquals(2, countingStream.skip(2)); |
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40 | assertEquals(6, countingStream.getPosition()); |
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41 | assertTrue(countingStream.read() != -1); |
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42 | assertEquals(7, countingStream.getPosition()); |
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43 | assertTrue(countingStream.read() == -1); |
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44 | assertEquals(7, countingStream.getPosition()); |
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45 | assertTrue(countingStream.read() == -1); |
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46 | assertEquals(7, countingStream.getPosition()); |
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47 | assertTrue(countingStream.read(tmp) == -1); |
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48 | assertEquals(7, countingStream.getPosition()); |
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49 | assertTrue(countingStream.read(tmp) == -1); |
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50 | assertEquals(7, countingStream.getPosition()); |
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51 | } |
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52 | |
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53 | } |
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