[120] | 1 | /** |
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| 2 | * Copyright 2007 The Apache Software Foundation |
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| 3 | * |
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| 4 | * Licensed to the Apache Software Foundation (ASF) under one |
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| 5 | * or more contributor license agreements. See the NOTICE file |
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| 6 | * distributed with this work for additional information |
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| 7 | * regarding copyright ownership. The ASF licenses this file |
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| 8 | * to you under the Apache License, Version 2.0 (the |
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| 9 | * "License"); you may not use this file except in compliance |
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| 10 | * with the License. You may obtain a copy of the License at |
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| 11 | * |
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| 12 | * http://www.apache.org/licenses/LICENSE-2.0 |
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| 13 | * |
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| 14 | * Unless required by applicable law or agreed to in writing, software |
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| 15 | * distributed under the License is distributed on an "AS IS" BASIS, |
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| 16 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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| 17 | * See the License for the specific language governing permissions and |
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| 18 | * limitations under the License. |
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| 19 | */ |
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| 20 | package org.apache.hadoop.io; |
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| 21 | |
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| 22 | import java.util.Map; |
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| 23 | |
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| 24 | import junit.framework.TestCase; |
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| 25 | |
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| 26 | /** |
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| 27 | * Tests SortedMapWritable |
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| 28 | */ |
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| 29 | public class TestSortedMapWritable extends TestCase { |
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| 30 | /** the test */ |
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| 31 | @SuppressWarnings("unchecked") |
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| 32 | public void testSortedMapWritable() { |
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| 33 | Text[] keys = { |
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| 34 | new Text("key1"), |
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| 35 | new Text("key2"), |
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| 36 | new Text("key3"), |
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| 37 | }; |
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| 38 | |
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| 39 | BytesWritable[] values = { |
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| 40 | new BytesWritable("value1".getBytes()), |
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| 41 | new BytesWritable("value2".getBytes()), |
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| 42 | new BytesWritable("value3".getBytes()) |
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| 43 | }; |
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| 44 | |
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| 45 | SortedMapWritable inMap = new SortedMapWritable(); |
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| 46 | for (int i = 0; i < keys.length; i++) { |
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| 47 | inMap.put(keys[i], values[i]); |
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| 48 | } |
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| 49 | |
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| 50 | assertEquals(0, inMap.firstKey().compareTo(keys[0])); |
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| 51 | assertEquals(0, inMap.lastKey().compareTo(keys[2])); |
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| 52 | |
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| 53 | SortedMapWritable outMap = new SortedMapWritable(inMap); |
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| 54 | assertEquals(inMap.size(), outMap.size()); |
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| 55 | |
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| 56 | for (Map.Entry<WritableComparable, Writable> e: inMap.entrySet()) { |
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| 57 | assertTrue(outMap.containsKey(e.getKey())); |
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| 58 | assertEquals(0, ((WritableComparable) outMap.get(e.getKey())).compareTo( |
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| 59 | e.getValue())); |
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| 60 | } |
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| 61 | |
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| 62 | // Now for something a little harder... |
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| 63 | |
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| 64 | Text[] maps = { |
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| 65 | new Text("map1"), |
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| 66 | new Text("map2") |
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| 67 | }; |
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| 68 | |
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| 69 | SortedMapWritable mapOfMaps = new SortedMapWritable(); |
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| 70 | mapOfMaps.put(maps[0], inMap); |
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| 71 | mapOfMaps.put(maps[1], outMap); |
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| 72 | |
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| 73 | SortedMapWritable copyOfMapOfMaps = new SortedMapWritable(mapOfMaps); |
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| 74 | for (int i = 0; i < maps.length; i++) { |
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| 75 | assertTrue(copyOfMapOfMaps.containsKey(maps[i])); |
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| 76 | |
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| 77 | SortedMapWritable a = (SortedMapWritable) mapOfMaps.get(maps[i]); |
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| 78 | SortedMapWritable b = (SortedMapWritable) copyOfMapOfMaps.get(maps[i]); |
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| 79 | assertEquals(a.size(), b.size()); |
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| 80 | for (Writable key: a.keySet()) { |
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| 81 | assertTrue(b.containsKey(key)); |
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| 82 | |
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| 83 | // This will work because we know what we put into each set |
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| 84 | |
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| 85 | WritableComparable aValue = (WritableComparable) a.get(key); |
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| 86 | WritableComparable bValue = (WritableComparable) b.get(key); |
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| 87 | assertEquals(0, aValue.compareTo(bValue)); |
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| 88 | } |
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| 89 | } |
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| 90 | } |
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| 91 | |
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| 92 | /** |
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| 93 | * Test that number of "unknown" classes is propagated across multiple copies. |
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| 94 | */ |
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| 95 | @SuppressWarnings("deprecation") |
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| 96 | public void testForeignClass() { |
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| 97 | SortedMapWritable inMap = new SortedMapWritable(); |
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| 98 | inMap.put(new Text("key"), new UTF8("value")); |
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| 99 | inMap.put(new Text("key2"), new UTF8("value2")); |
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| 100 | SortedMapWritable outMap = new SortedMapWritable(inMap); |
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| 101 | SortedMapWritable copyOfCopy = new SortedMapWritable(outMap); |
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| 102 | assertEquals(1, copyOfCopy.getNewClasses()); |
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| 103 | } |
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| 104 | } |
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