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, software |
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13 | * distributed under the License is distributed on an "AS IS" BASIS, |
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14 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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15 | * See the License for the specific language governing permissions and |
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16 | * limitations under the License. |
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17 | */ |
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18 | |
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19 | package org.apache.hadoop.io; |
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20 | |
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21 | import junit.framework.TestCase; |
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22 | import java.util.Random; |
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23 | |
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24 | /** Unit tests for UTF8. */ |
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25 | public class TestUTF8 extends TestCase { |
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26 | public TestUTF8(String name) { super(name); } |
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27 | |
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28 | private static final Random RANDOM = new Random(); |
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29 | |
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30 | public static String getTestString() throws Exception { |
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31 | StringBuffer buffer = new StringBuffer(); |
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32 | int length = RANDOM.nextInt(100); |
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33 | for (int i = 0; i < length; i++) { |
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34 | buffer.append((char)(RANDOM.nextInt(Character.MAX_VALUE))); |
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35 | } |
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36 | return buffer.toString(); |
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37 | } |
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38 | |
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39 | public void testWritable() throws Exception { |
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40 | for (int i = 0; i < 10; i++) { |
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41 | TestWritable.testWritable(new UTF8(getTestString())); |
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42 | } |
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43 | } |
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44 | |
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45 | public void testGetBytes() throws Exception { |
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46 | for (int i = 0; i < 10; i++) { |
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47 | |
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48 | // generate a random string |
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49 | String before = getTestString(); |
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50 | |
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51 | // check its utf8 |
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52 | assertEquals(before, new String(UTF8.getBytes(before), "UTF-8")); |
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53 | } |
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54 | } |
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55 | |
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56 | public void testIO() throws Exception { |
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57 | DataOutputBuffer out = new DataOutputBuffer(); |
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58 | DataInputBuffer in = new DataInputBuffer(); |
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59 | |
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60 | for (int i = 0; i < 10; i++) { |
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61 | // generate a random string |
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62 | String before = getTestString(); |
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63 | |
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64 | // write it |
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65 | out.reset(); |
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66 | UTF8.writeString(out, before); |
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67 | |
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68 | // test that it reads correctly |
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69 | in.reset(out.getData(), out.getLength()); |
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70 | String after = UTF8.readString(in); |
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71 | assertTrue(before.equals(after)); |
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72 | |
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73 | // test that it reads correctly with DataInput |
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74 | in.reset(out.getData(), out.getLength()); |
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75 | String after2 = in.readUTF(); |
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76 | assertTrue(before.equals(after2)); |
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77 | |
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78 | // test that it is compatible with Java's other decoder |
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79 | String after3 = new String(out.getData(), 2, out.getLength()-2, "UTF-8"); |
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80 | assertTrue(before.equals(after3)); |
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81 | |
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82 | } |
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83 | |
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84 | } |
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85 | |
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86 | } |
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