[21] | 1 | /* |
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| 2 | * Cloud9: A MapReduce Library for Hadoop |
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| 3 | * |
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| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); you |
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| 5 | * may not use this file except in compliance with the License. You may |
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| 6 | * obtain a copy of the License at |
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| 7 | * |
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| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
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| 9 | * |
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| 10 | * Unless required by applicable law or agreed to in writing, software |
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| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
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| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or |
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| 13 | * implied. See the License for the specific language governing |
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| 14 | * permissions and limitations under the License. |
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| 15 | */ |
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| 16 | |
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| 17 | package tw.org.nchc.tuple; |
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| 18 | |
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| 19 | import static org.junit.Assert.assertEquals; |
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| 20 | import static org.junit.Assert.assertTrue; |
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| 21 | |
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| 22 | import java.io.ByteArrayInputStream; |
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| 23 | import java.io.ByteArrayOutputStream; |
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| 24 | import java.io.DataInputStream; |
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| 25 | import java.io.DataOutputStream; |
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| 26 | import java.io.IOException; |
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| 27 | import java.util.ArrayList; |
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| 28 | |
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| 29 | import junit.framework.JUnit4TestAdapter; |
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| 30 | |
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| 31 | import org.apache.hadoop.io.FloatWritable; |
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| 32 | import org.apache.hadoop.io.IntWritable; |
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| 33 | import org.apache.hadoop.io.Text; |
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| 34 | import org.apache.hadoop.io.WritableComparable; |
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| 35 | import org.junit.Test; |
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| 36 | |
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| 37 | public class ListWritableTest { |
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| 38 | |
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| 39 | @Test |
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| 40 | public void testBasic() throws IOException { |
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| 41 | ListWritable<Text> list = new ListWritable<Text>(); |
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| 42 | |
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| 43 | list.add(new Text("hi")); |
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| 44 | list.add(new Text("there")); |
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| 45 | |
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| 46 | assertEquals(list.get(0).toString(), "hi"); |
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| 47 | assertEquals(list.get(1).toString(), "there"); |
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| 48 | } |
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| 49 | |
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| 50 | @Test |
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| 51 | public void testSerialize1() throws IOException { |
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| 52 | ListWritable<Text> list = new ListWritable<Text>(); |
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| 53 | |
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| 54 | list.add(new Text("hi")); |
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| 55 | list.add(new Text("there")); |
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| 56 | |
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| 57 | ByteArrayOutputStream bytesOut = new ByteArrayOutputStream(); |
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| 58 | DataOutputStream dataOut = new DataOutputStream(bytesOut); |
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| 59 | |
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| 60 | list.write(dataOut); |
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| 61 | |
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| 62 | ListWritable<Text> newList = new ListWritable<Text>(); |
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| 63 | newList.readFields(new DataInputStream(new ByteArrayInputStream( |
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| 64 | bytesOut.toByteArray()))); |
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| 65 | |
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| 66 | assertEquals(newList.get(0).toString(), "hi"); |
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| 67 | assertEquals(newList.get(1).toString(), "there"); |
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| 68 | } |
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| 69 | |
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| 70 | @Test |
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| 71 | public void testSerialize2() throws IOException { |
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| 72 | ListWritable<FloatWritable> list = new ListWritable<FloatWritable>(); |
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| 73 | |
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| 74 | list.add(new FloatWritable(0.3f)); |
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| 75 | list.add(new FloatWritable(3244.2f)); |
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| 76 | |
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| 77 | ByteArrayOutputStream bytesOut = new ByteArrayOutputStream(); |
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| 78 | DataOutputStream dataOut = new DataOutputStream(bytesOut); |
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| 79 | |
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| 80 | list.write(dataOut); |
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| 81 | |
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| 82 | ListWritable<FloatWritable> newList = new ListWritable<FloatWritable>(); |
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| 83 | newList.readFields(new DataInputStream(new ByteArrayInputStream( |
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| 84 | bytesOut.toByteArray()))); |
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| 85 | |
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| 86 | assertTrue(newList.get(0).get() == 0.3f); |
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| 87 | assertTrue(newList.get(1).get() == 3244.2f); |
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| 88 | } |
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| 89 | |
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| 90 | @Test |
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| 91 | public void testToString() { |
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| 92 | ListWritable<Text> list = new ListWritable<Text>(); |
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| 93 | |
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| 94 | list.add(new Text("hi")); |
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| 95 | list.add(new Text("there")); |
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| 96 | |
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| 97 | assertEquals(list.toString(), "[hi, there]"); |
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| 98 | } |
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| 99 | |
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| 100 | @Test |
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| 101 | public void testClear() { |
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| 102 | ListWritable<Text> list = new ListWritable<Text>(); |
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| 103 | |
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| 104 | list.add(new Text("hi")); |
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| 105 | list.add(new Text("there")); |
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| 106 | list.clear(); |
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| 107 | |
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| 108 | assertEquals(list.size(), 0); |
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| 109 | } |
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| 110 | |
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| 111 | @Test |
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| 112 | public void testSorting1() { |
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| 113 | ListWritable<Text> list1 = new ListWritable<Text>(); |
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| 114 | ListWritable<Text> list2 = new ListWritable<Text>(); |
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| 115 | |
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| 116 | list1.add(new Text("a")); |
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| 117 | |
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| 118 | assertTrue(list1.compareTo(list2) > 0); |
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| 119 | } |
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| 120 | |
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| 121 | @Test |
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| 122 | public void testSorting2() { |
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| 123 | ListWritable<Text> list1 = new ListWritable<Text>(); |
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| 124 | ListWritable<Text> list2 = new ListWritable<Text>(); |
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| 125 | |
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| 126 | list1.add(new Text("a")); |
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| 127 | list2.add(new Text("b")); |
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| 128 | |
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| 129 | assertTrue(list1.compareTo(list2) < 0); |
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| 130 | assertTrue(list2.compareTo(list1) > 0); |
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| 131 | |
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| 132 | list2.clear(); |
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| 133 | list2.add(new Text("a")); |
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| 134 | |
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| 135 | assertTrue(list1.compareTo(list2) == 0); |
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| 136 | |
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| 137 | list1.add(new Text("a")); |
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| 138 | list2.add(new Text("b")); |
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| 139 | |
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| 140 | // list 1 is now [a, a] |
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| 141 | // list 2 is now [a, b] |
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| 142 | assertTrue(list1.compareTo(list2) < 0); |
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| 143 | assertTrue(list2.compareTo(list1) > 0); |
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| 144 | |
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| 145 | // list 1 is now [a, a, a] |
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| 146 | list1.add(new Text("a")); |
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| 147 | |
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| 148 | assertTrue(list1.compareTo(list2) < 0); |
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| 149 | } |
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| 150 | |
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| 151 | @Test |
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| 152 | public void testSorting3() { |
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| 153 | ListWritable<Text> list1 = new ListWritable<Text>(); |
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| 154 | ListWritable<Text> list2 = new ListWritable<Text>(); |
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| 155 | ListWritable<Text> list3 = new ListWritable<Text>(); |
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| 156 | |
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| 157 | list1.add(new Text("a")); |
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| 158 | |
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| 159 | list2.add(new Text("a")); |
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| 160 | list2.add(new Text("a")); |
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| 161 | |
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| 162 | list3.add(new Text("a")); |
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| 163 | list3.add(new Text("a")); |
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| 164 | |
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| 165 | assertTrue(list2.compareTo(list3) == 0); |
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| 166 | |
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| 167 | list3.add(new Text("a")); |
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| 168 | |
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| 169 | // list 1 is [a] |
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| 170 | // list 2 is [a, a] |
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| 171 | // list 3 is [a, a, a] |
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| 172 | |
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| 173 | assertTrue(list1.compareTo(list2) < 0); |
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| 174 | assertTrue(list1.compareTo(list3) < 0); |
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| 175 | assertTrue(list2.compareTo(list1) > 0); |
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| 176 | assertTrue(list2.compareTo(list3) < 0); |
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| 177 | assertTrue(list3.compareTo(list1) > 0); |
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| 178 | assertTrue(list3.compareTo(list2) > 0); |
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| 179 | } |
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| 180 | |
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| 181 | @Test |
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| 182 | public void testEmpty() throws IOException { |
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| 183 | ListWritable<Text> list = new ListWritable<Text>(); |
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| 184 | |
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| 185 | assertTrue(list.size() == 0); |
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| 186 | |
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| 187 | ByteArrayOutputStream bytesOut = new ByteArrayOutputStream(); |
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| 188 | DataOutputStream dataOut = new DataOutputStream(bytesOut); |
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| 189 | |
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| 190 | list.write(dataOut); |
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| 191 | |
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| 192 | ListWritable<Text> newList = new ListWritable<Text>(); |
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| 193 | newList.readFields(new DataInputStream(new ByteArrayInputStream( |
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| 194 | bytesOut.toByteArray()))); |
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| 195 | assertTrue(newList.size() == 0); |
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| 196 | |
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| 197 | newList.add(new Text("Hey")); |
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| 198 | assertEquals(newList.get(0),new Text("Hey")); |
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| 199 | |
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| 200 | } |
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| 201 | |
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| 202 | @Test |
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| 203 | public void testTypeSafety() { |
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| 204 | ListWritable<WritableComparable> list = new ListWritable<WritableComparable> (); |
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| 205 | list.add(new Text("Hello")); |
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| 206 | list.add(new Text("Are you there")); |
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| 207 | |
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| 208 | try { |
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| 209 | list.add(new IntWritable(5)); |
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| 210 | assertTrue(false); // should throw an exception before reaching this line. |
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| 211 | } catch (IllegalArgumentException e) { |
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| 212 | assertTrue(true); |
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| 213 | } |
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| 214 | |
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| 215 | ArrayList<WritableComparable> otherList = new ArrayList<WritableComparable>(); |
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| 216 | otherList.add(new Text("Test")); |
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| 217 | otherList.add(new Text("Test 2")); |
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| 218 | |
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| 219 | assertTrue(list.addAll(otherList)); |
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| 220 | |
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| 221 | otherList.add(new IntWritable(6)); |
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| 222 | try { |
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| 223 | list.addAll(otherList); |
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| 224 | assertTrue(false); |
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| 225 | } catch (IllegalArgumentException e) { |
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| 226 | assertTrue(true); |
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| 227 | } |
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| 228 | } |
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| 229 | |
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| 230 | @Test |
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| 231 | public void testListMethods() { |
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| 232 | IntWritable a = new IntWritable(1); |
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| 233 | IntWritable b = new IntWritable(2); |
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| 234 | IntWritable c = new IntWritable(3); |
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| 235 | IntWritable d = new IntWritable(4); |
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| 236 | IntWritable e = new IntWritable(5); |
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| 237 | |
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| 238 | ListWritable<IntWritable> list = new ListWritable<IntWritable>(); |
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| 239 | assertTrue(list.isEmpty()); |
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| 240 | list.add(a); |
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| 241 | list.add(b); |
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| 242 | list.add(c); |
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| 243 | list.add(d); |
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| 244 | list.add(e); |
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| 245 | |
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| 246 | int pos = 0; |
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| 247 | for (IntWritable i : list) { |
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| 248 | assertEquals(i, list.get(pos)); |
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| 249 | ++pos; |
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| 250 | } |
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| 251 | |
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| 252 | assertTrue(list.indexOf(d) == 3); |
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| 253 | list.add(2, a); |
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| 254 | assertTrue(list.lastIndexOf(a) == 2); |
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| 255 | assertEquals(list.get(2), list.get(0)); |
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| 256 | assertTrue(list.size() == 6); |
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| 257 | |
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| 258 | assertTrue(list.contains(c)); |
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| 259 | assertTrue(!list.contains(new IntWritable(123))); |
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| 260 | |
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| 261 | ArrayList<IntWritable> otherList = new ArrayList<IntWritable>(); |
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| 262 | otherList.add(a); |
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| 263 | otherList.add(b); |
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| 264 | otherList.add(c); |
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| 265 | |
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| 266 | assertTrue(list.containsAll(otherList)); |
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| 267 | |
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| 268 | otherList.add(new IntWritable(200)); |
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| 269 | assertTrue(!list.containsAll(otherList)); |
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| 270 | |
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| 271 | assertEquals(a, otherList.remove(0)); |
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| 272 | assertTrue(list.remove(d)); |
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| 273 | |
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| 274 | } |
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| 275 | |
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| 276 | public static junit.framework.Test suite() { |
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| 277 | return new JUnit4TestAdapter(ListWritableTest.class); |
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| 278 | } |
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| 279 | |
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| 280 | } |
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