[120] | 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.mapred; |
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| 20 | |
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| 21 | import java.util.HashMap; |
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| 22 | import java.util.Iterator; |
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| 23 | import java.util.Map; |
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| 24 | |
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| 25 | import junit.framework.TestCase; |
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| 26 | |
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| 27 | import org.apache.hadoop.conf.Configuration; |
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| 28 | import org.apache.hadoop.io.DataInputBuffer; |
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| 29 | import org.apache.hadoop.io.DataOutputBuffer; |
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| 30 | import org.apache.hadoop.io.serializer.Deserializer; |
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| 31 | import org.apache.hadoop.io.serializer.SerializationFactory; |
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| 32 | import org.apache.hadoop.io.serializer.Serializer; |
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| 33 | import org.apache.hadoop.util.GenericsUtil; |
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| 34 | |
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| 35 | public class TestWritableJobConf extends TestCase { |
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| 36 | |
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| 37 | private static final Configuration CONF = new Configuration(); |
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| 38 | |
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| 39 | private <K> K serDeser(K conf) throws Exception { |
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| 40 | SerializationFactory factory = new SerializationFactory(CONF); |
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| 41 | Serializer<K> serializer = |
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| 42 | factory.getSerializer(GenericsUtil.getClass(conf)); |
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| 43 | Deserializer<K> deserializer = |
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| 44 | factory.getDeserializer(GenericsUtil.getClass(conf)); |
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| 45 | |
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| 46 | DataOutputBuffer out = new DataOutputBuffer(); |
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| 47 | serializer.open(out); |
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| 48 | serializer.serialize(conf); |
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| 49 | serializer.close(); |
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| 50 | |
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| 51 | DataInputBuffer in = new DataInputBuffer(); |
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| 52 | in.reset(out.getData(), out.getLength()); |
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| 53 | deserializer.open(in); |
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| 54 | K after = deserializer.deserialize(null); |
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| 55 | deserializer.close(); |
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| 56 | return after; |
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| 57 | } |
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| 58 | |
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| 59 | private void assertEquals(Configuration conf1, Configuration conf2) { |
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| 60 | assertEquals(conf1.size(), conf2.size()); |
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| 61 | |
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| 62 | Iterator<Map.Entry<String, String>> iterator1 = conf1.iterator(); |
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| 63 | Map<String, String> map1 = new HashMap<String,String>(); |
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| 64 | while (iterator1.hasNext()) { |
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| 65 | Map.Entry<String, String> entry = iterator1.next(); |
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| 66 | map1.put(entry.getKey(), entry.getValue()); |
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| 67 | } |
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| 68 | |
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| 69 | Iterator<Map.Entry<String, String>> iterator2 = conf1.iterator(); |
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| 70 | Map<String, String> map2 = new HashMap<String,String>(); |
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| 71 | while (iterator2.hasNext()) { |
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| 72 | Map.Entry<String, String> entry = iterator2.next(); |
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| 73 | map2.put(entry.getKey(), entry.getValue()); |
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| 74 | } |
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| 75 | |
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| 76 | assertEquals(map1, map2); |
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| 77 | } |
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| 78 | |
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| 79 | public void testEmptyConfiguration() throws Exception { |
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| 80 | JobConf conf = new JobConf(); |
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| 81 | Configuration deser = serDeser(conf); |
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| 82 | assertEquals(conf, deser); |
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| 83 | } |
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| 84 | |
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| 85 | public void testNonEmptyConfiguration() throws Exception { |
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| 86 | JobConf conf = new JobConf(); |
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| 87 | conf.set("a", "A"); |
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| 88 | conf.set("b", "B"); |
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| 89 | Configuration deser = serDeser(conf); |
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| 90 | assertEquals(conf, deser); |
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| 91 | } |
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| 92 | |
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| 93 | public void testConfigurationWithDefaults() throws Exception { |
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| 94 | JobConf conf = new JobConf(false); |
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| 95 | conf.set("a", "A"); |
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| 96 | conf.set("b", "B"); |
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| 97 | Configuration deser = serDeser(conf); |
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| 98 | assertEquals(conf, deser); |
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| 99 | } |
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| 100 | |
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| 101 | } |
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