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 java.io.IOException; |
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22 | import java.util.Random; |
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23 | |
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24 | import junit.framework.TestCase; |
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25 | |
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26 | import org.apache.commons.logging.Log; |
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27 | import org.apache.commons.logging.LogFactory; |
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28 | import org.apache.hadoop.conf.Configuration; |
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29 | |
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30 | public class TestDefaultStringifier extends TestCase { |
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31 | |
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32 | private static Configuration conf = new Configuration(); |
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33 | private static final Log LOG = LogFactory.getLog(TestDefaultStringifier.class); |
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34 | |
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35 | private char[] alphabet = "abcdefghijklmnopqrstuvwxyz".toCharArray(); |
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36 | |
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37 | public void testWithWritable() throws Exception { |
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38 | |
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39 | conf.set("io.serializations", "org.apache.hadoop.io.serializer.WritableSerialization"); |
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40 | |
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41 | LOG.info("Testing DefaultStringifier with Text"); |
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42 | |
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43 | Random random = new Random(); |
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44 | |
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45 | //test with a Text |
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46 | for(int i=0;i<10;i++) { |
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47 | //generate a random string |
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48 | StringBuilder builder = new StringBuilder(); |
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49 | int strLen = random.nextInt(40); |
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50 | for(int j=0; j< strLen; j++) { |
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51 | builder.append(alphabet[random.nextInt(alphabet.length)]); |
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52 | } |
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53 | Text text = new Text(builder.toString()); |
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54 | DefaultStringifier<Text> stringifier = new DefaultStringifier<Text>(conf, Text.class); |
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55 | |
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56 | String str = stringifier.toString(text); |
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57 | Text claimedText = stringifier.fromString(str); |
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58 | LOG.info("Object: " + text); |
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59 | LOG.info("String representation of the object: " + str); |
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60 | assertEquals(text, claimedText); |
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61 | } |
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62 | } |
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63 | |
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64 | public void testWithJavaSerialization() throws Exception { |
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65 | conf.set("io.serializations", "org.apache.hadoop.io.serializer.JavaSerialization"); |
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66 | |
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67 | LOG.info("Testing DefaultStringifier with Serializable Integer"); |
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68 | |
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69 | //Integer implements Serializable |
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70 | Integer testInt = Integer.valueOf(42); |
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71 | DefaultStringifier<Integer> stringifier = new DefaultStringifier<Integer>(conf, Integer.class); |
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72 | |
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73 | String str = stringifier.toString(testInt); |
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74 | Integer claimedInt = stringifier.fromString(str); |
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75 | LOG.info("String representation of the object: " + str); |
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76 | |
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77 | assertEquals(testInt, claimedInt); |
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78 | } |
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79 | |
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80 | public void testStoreLoad() throws IOException { |
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81 | |
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82 | LOG.info("Testing DefaultStringifier#store() and #load()"); |
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83 | conf.set("io.serializations", "org.apache.hadoop.io.serializer.WritableSerialization"); |
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84 | Text text = new Text("uninteresting test string"); |
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85 | String keyName = "test.defaultstringifier.key1"; |
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86 | |
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87 | DefaultStringifier.store(conf,text, keyName); |
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88 | |
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89 | Text claimedText = DefaultStringifier.load(conf, keyName, Text.class); |
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90 | assertEquals("DefaultStringifier#load() or #store() might be flawed" |
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91 | , text, claimedText); |
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92 | |
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93 | } |
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94 | |
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95 | public void testStoreLoadArray() throws IOException { |
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96 | LOG.info("Testing DefaultStringifier#storeArray() and #loadArray()"); |
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97 | conf.set("io.serializations", "org.apache.hadoop.io.serializer.JavaSerialization"); |
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98 | |
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99 | String keyName = "test.defaultstringifier.key2"; |
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100 | |
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101 | Integer[] array = new Integer[] {1,2,3,4,5}; |
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102 | |
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103 | |
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104 | DefaultStringifier.storeArray(conf, array, keyName); |
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105 | |
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106 | Integer[] claimedArray = DefaultStringifier.<Integer>loadArray(conf, keyName, Integer.class); |
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107 | for (int i = 0; i < array.length; i++) { |
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108 | assertEquals("two arrays are not equal", array[i], claimedArray[i]); |
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109 | } |
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110 | |
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111 | } |
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112 | |
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113 | } |
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