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.*; |
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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 ArrayListWritableComparableTest { |
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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 | ArrayListWritableComparable<Text> list = new ArrayListWritableComparable<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 | //ArrayListWritableComparable<Text> list = new ArrayListWritableComparable<Text>(); |
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53 | ArrayListWritableComparable<WritableComparable> list = new ArrayListWritableComparable<WritableComparable>(); |
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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 | ArrayListWritableComparable<Text> newList = new ArrayListWritableComparable<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 | ArrayListWritableComparable<FloatWritable> list = new ArrayListWritableComparable<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 | ArrayListWritableComparable<FloatWritable> newList = new ArrayListWritableComparable<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 | ArrayListWritableComparable<Text> list = new ArrayListWritableComparable<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 | ArrayListWritableComparable<Text> list = new ArrayListWritableComparable<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 testEmpty() throws IOException { |
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113 | ArrayListWritableComparable<Text> list = new ArrayListWritableComparable<Text>(); |
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114 | |
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115 | assertTrue(list.size() == 0); |
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116 | |
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117 | ByteArrayOutputStream bytesOut = new ByteArrayOutputStream(); |
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118 | DataOutputStream dataOut = new DataOutputStream(bytesOut); |
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119 | |
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120 | list.write(dataOut); |
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121 | |
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122 | ArrayListWritableComparable<Text> newList = new ArrayListWritableComparable<Text>(); |
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123 | newList.readFields(new DataInputStream(new ByteArrayInputStream( |
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124 | bytesOut.toByteArray()))); |
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125 | assertTrue(newList.size() == 0); |
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126 | |
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127 | newList.add(new Text("Hey")); |
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128 | assertEquals(newList.get(0),new Text("Hey")); |
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129 | |
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130 | } |
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131 | |
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132 | /*@Test |
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133 | public void testTypeSafety() { |
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134 | ArrayListWritableComparable<WritableComparable> list = new ArrayListWritableComparable<WritableComparable> (); |
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135 | list.add(new Text("Hello")); |
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136 | list.add(new Text("Are you there")); |
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137 | |
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138 | try { |
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139 | list.add(new IntWritable(5)); |
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140 | assertTrue(false); // should throw an exception before reaching this line. |
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141 | } catch (IllegalArgumentException e) { |
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142 | assertTrue(true); |
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143 | } |
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144 | |
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145 | ArrayList<WritableComparable> otherList = new ArrayList<WritableComparable>(); |
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146 | otherList.add(new Text("Test")); |
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147 | otherList.add(new Text("Test 2")); |
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148 | |
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149 | assertTrue(list.addAll(otherList)); |
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150 | |
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151 | otherList.add(new IntWritable(6)); |
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152 | try { |
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153 | list.addAll(otherList); |
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154 | assertTrue(false); |
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155 | } catch (IllegalArgumentException e) { |
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156 | assertTrue(true); |
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157 | } |
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158 | }*/ |
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159 | |
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160 | @Test |
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161 | public void testListMethods() { |
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162 | IntWritable a = new IntWritable(1); |
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163 | IntWritable b = new IntWritable(2); |
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164 | IntWritable c = new IntWritable(3); |
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165 | IntWritable d = new IntWritable(4); |
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166 | IntWritable e = new IntWritable(5); |
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167 | |
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168 | ArrayListWritableComparable<IntWritable> list = new ArrayListWritableComparable<IntWritable>(); |
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169 | assertTrue(list.isEmpty()); |
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170 | list.add(a); |
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171 | list.add(b); |
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172 | list.add(c); |
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173 | list.add(d); |
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174 | list.add(e); |
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175 | |
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176 | int pos = 0; |
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177 | for (IntWritable i : list) { |
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178 | assertEquals(i, list.get(pos)); |
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179 | ++pos; |
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180 | } |
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181 | |
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182 | assertTrue(list.indexOf(d) == 3); |
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183 | list.add(2, a); |
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184 | assertTrue(list.lastIndexOf(a) == 2); |
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185 | assertEquals(list.get(2), list.get(0)); |
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186 | assertTrue(list.size() == 6); |
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187 | |
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188 | assertTrue(list.contains(c)); |
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189 | assertTrue(!list.contains(new IntWritable(123))); |
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190 | |
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191 | ArrayList<IntWritable> otherList = new ArrayList<IntWritable>(); |
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192 | otherList.add(a); |
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193 | otherList.add(b); |
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194 | otherList.add(c); |
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195 | |
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196 | assertTrue(list.containsAll(otherList)); |
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197 | |
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198 | otherList.add(new IntWritable(200)); |
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199 | assertTrue(!list.containsAll(otherList)); |
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200 | |
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201 | assertEquals(a, otherList.remove(0)); |
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202 | assertTrue(list.remove(d)); |
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203 | |
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204 | } |
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205 | |
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206 | @Test |
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207 | public void testSorting1() { |
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208 | ArrayListWritableComparable<Text> list1 = new ArrayListWritableComparable<Text>(); |
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209 | ArrayListWritableComparable<Text> list2 = new ArrayListWritableComparable<Text>(); |
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210 | |
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211 | list1.add(new Text("a")); |
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212 | |
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213 | assertTrue(list1.compareTo(list2) > 0); |
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214 | } |
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215 | |
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216 | @Test |
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217 | public void testSorting2() { |
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218 | ArrayListWritableComparable<Text> list1 = new ArrayListWritableComparable<Text>(); |
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219 | ArrayListWritableComparable<Text> list2 = new ArrayListWritableComparable<Text>(); |
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220 | |
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221 | list1.add(new Text("a")); |
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222 | list2.add(new Text("b")); |
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223 | |
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224 | assertTrue(list1.compareTo(list2) < 0); |
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225 | assertTrue(list2.compareTo(list1) > 0); |
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226 | |
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227 | list2.clear(); |
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228 | list2.add(new Text("a")); |
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229 | |
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230 | assertTrue(list1.compareTo(list2) == 0); |
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231 | |
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232 | list1.add(new Text("a")); |
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233 | list2.add(new Text("b")); |
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234 | |
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235 | // list 1 is now [a, a] |
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236 | // list 2 is now [a, b] |
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237 | assertTrue(list1.compareTo(list2) < 0); |
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238 | assertTrue(list2.compareTo(list1) > 0); |
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239 | |
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240 | // list 1 is now [a, a, a] |
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241 | list1.add(new Text("a")); |
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242 | |
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243 | assertTrue(list1.compareTo(list2) < 0); |
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244 | } |
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245 | |
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246 | @Test |
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247 | public void testSorting3() { |
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248 | ArrayListWritableComparable<Text> list1 = new ArrayListWritableComparable<Text>(); |
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249 | ArrayListWritableComparable<Text> list2 = new ArrayListWritableComparable<Text>(); |
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250 | ArrayListWritableComparable<Text> list3 = new ArrayListWritableComparable<Text>(); |
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251 | |
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252 | list1.add(new Text("a")); |
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253 | |
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254 | list2.add(new Text("a")); |
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255 | list2.add(new Text("a")); |
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256 | |
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257 | list3.add(new Text("a")); |
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258 | list3.add(new Text("a")); |
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259 | |
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260 | assertTrue(list2.compareTo(list3) == 0); |
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261 | |
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262 | list3.add(new Text("a")); |
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263 | |
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264 | // list 1 is [a] |
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265 | // list 2 is [a, a] |
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266 | // list 3 is [a, a, a] |
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267 | |
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268 | assertTrue(list1.compareTo(list2) < 0); |
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269 | assertTrue(list1.compareTo(list3) < 0); |
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270 | assertTrue(list2.compareTo(list1) > 0); |
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271 | assertTrue(list2.compareTo(list3) < 0); |
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272 | assertTrue(list3.compareTo(list1) > 0); |
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273 | assertTrue(list3.compareTo(list2) > 0); |
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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(ArrayListWritableComparableTest.class); |
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278 | } |
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279 | |
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280 | } |
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