1 | /* |
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2 | * This program is free software; you can redistribute it and/or modify |
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3 | * it under the terms of the GNU General Public License as published by |
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4 | * the Free Software Foundation; either version 2 of the License, or |
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5 | * (at your option) any later version. |
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6 | * |
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7 | * This program is distributed in the hope that it will be useful, |
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8 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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9 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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10 | * GNU General Public License for more details. |
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11 | * |
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12 | * You should have received a copy of the GNU General Public License |
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13 | * along with this program; if not, write to the Free Software |
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14 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
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15 | */ |
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16 | |
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17 | /* |
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18 | * Copyright (C) 2006 University of Waikato, Hamilton, New Zealand |
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19 | */ |
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20 | |
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21 | package weka.classifiers.meta; |
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22 | |
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23 | import weka.classifiers.AbstractClassifierTest; |
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24 | import weka.classifiers.Classifier; |
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25 | import weka.classifiers.meta.ensembleSelection.EnsembleSelectionLibrary; |
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26 | |
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27 | import java.io.File; |
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28 | |
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29 | import junit.framework.Test; |
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30 | import junit.framework.TestSuite; |
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31 | |
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32 | /** |
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33 | * Tests EnsembleSelection. Run from the command line with:<p/> |
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34 | * java weka.classifiers.meta.EnsembleSelectionTest |
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35 | * |
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36 | * @author FracPete (fracpete at waikato dot ac dot nz) |
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37 | * @version $Revision: 1.1 $ |
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38 | */ |
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39 | public class EnsembleSelectionTest |
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40 | extends AbstractClassifierTest { |
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41 | |
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42 | /** Default root location, relative to the users home direcory. */ |
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43 | private final static String DEFAULT_ROOT = "ensembleSelection/setup-1"; |
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44 | |
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45 | /** |
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46 | * The name of the system property that can be used to override the |
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47 | * location of the reference root. |
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48 | */ |
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49 | private static final String ROOT_PROPERTY = "weka.classifiers.meta.EnsembleSelection.root"; |
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50 | |
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51 | /** Stores the root location under which output files are stored. */ |
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52 | private static File ROOT; |
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53 | |
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54 | /** the test example setup */ |
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55 | private final static String DEFAULT_SETUP = "weka/classifiers/meta/EnsembleSelectionTest.model.xml"; |
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56 | |
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57 | /** |
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58 | * default constructor |
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59 | * |
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60 | * @param name the name |
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61 | */ |
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62 | public EnsembleSelectionTest(String name) { |
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63 | super(name); |
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64 | } |
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65 | |
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66 | /** |
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67 | * Returns a <code>File</code> corresponding to the root of the ensemble |
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68 | * output directory. |
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69 | * |
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70 | * @return the ensemble root directory (always the first one). |
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71 | */ |
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72 | private static File getRoot() { |
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73 | if (ROOT == null) { |
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74 | String root = System.getProperty(ROOT_PROPERTY); |
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75 | if (root == null) { |
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76 | root = System.getProperty("user.dir"); |
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77 | ROOT = new File(root, DEFAULT_ROOT); |
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78 | } |
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79 | else { |
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80 | ROOT = new File(root); |
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81 | } |
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82 | } |
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83 | |
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84 | return ROOT; |
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85 | } |
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86 | |
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87 | /** |
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88 | * returns the root directory with the specified index |
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89 | * |
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90 | * @param index the index for the root dir |
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91 | * @return the File representing the root dir |
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92 | */ |
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93 | private static File getRoot(int index) { |
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94 | File result; |
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95 | File root; |
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96 | |
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97 | root = getRoot(); |
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98 | result = new File(root.getAbsolutePath().replaceAll("-[0-9]*$", "-" + index)); |
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99 | |
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100 | return result; |
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101 | } |
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102 | |
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103 | /** |
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104 | * returns the next available root directory |
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105 | * |
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106 | * @return the next available root directory |
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107 | */ |
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108 | private static File getNextRoot() { |
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109 | int i; |
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110 | File result; |
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111 | |
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112 | i = 0; |
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113 | do { |
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114 | i++; |
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115 | result = getRoot(i); |
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116 | } |
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117 | while (result.exists()); |
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118 | |
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119 | return result; |
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120 | } |
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121 | |
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122 | /** |
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123 | * returns the next available root directory and creates it if it doesn't |
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124 | * exist yet |
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125 | * |
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126 | * @return the next available root directory |
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127 | */ |
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128 | private static File getNextRoot(boolean create) { |
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129 | File result; |
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130 | |
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131 | result = getNextRoot(); |
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132 | |
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133 | if (!result.exists() && create) |
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134 | result.mkdirs(); |
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135 | |
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136 | return result; |
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137 | } |
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138 | |
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139 | /** |
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140 | * Deletes all files and subdirectories under dir. |
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141 | * Returns true if all deletions were successful. |
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142 | * If a deletion fails, the method stops attempting |
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143 | * to delete and returns false. |
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144 | * |
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145 | * @param dir the directory to delete |
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146 | * @return true if successful |
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147 | */ |
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148 | public static boolean deleteDir(File dir) { |
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149 | int i; |
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150 | File[] files; |
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151 | boolean ok; |
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152 | |
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153 | if (dir.isDirectory()) { |
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154 | files = dir.listFiles(); |
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155 | for (i = 0; i < files.length; i++) { |
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156 | ok = deleteDir(files[i]); |
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157 | // problem deleting directory? |
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158 | if (!ok) |
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159 | return false; |
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160 | } |
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161 | } |
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162 | |
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163 | // The directory is now empty so delete it |
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164 | return dir.delete(); |
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165 | } |
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166 | |
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167 | /** |
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168 | * removes all the temporary directories created during a test run |
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169 | */ |
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170 | private void deleteDirs() throws Exception { |
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171 | File root; |
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172 | int i; |
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173 | |
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174 | root = getRoot(); |
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175 | if (root.exists()) { |
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176 | i = 1; |
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177 | do { |
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178 | if (!deleteDir(root)) |
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179 | System.out.println( |
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180 | "Couldn't delete output directory '" + root + "'!"); |
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181 | i++; |
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182 | root = getRoot(i); |
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183 | } |
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184 | while (root.exists()); |
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185 | } |
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186 | } |
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187 | |
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188 | /** |
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189 | * Called by JUnit before each test method. This implementation creates |
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190 | * the default classifier to test and loads a test set of Instances. |
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191 | * |
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192 | * @throws Exception if an error occurs reading the example instances. |
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193 | */ |
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194 | protected void setUp() throws Exception { |
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195 | super.setUp(); |
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196 | |
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197 | // delete output directories |
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198 | deleteDirs(); |
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199 | } |
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200 | |
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201 | /** Creates a default EnsembleSelection */ |
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202 | public Classifier getClassifier() { |
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203 | EnsembleSelection cls; |
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204 | |
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205 | cls = new EnsembleSelection(); |
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206 | cls.setWorkingDirectory(getNextRoot(true)); |
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207 | try { |
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208 | cls.setLibrary( |
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209 | new EnsembleSelectionLibrary( |
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210 | ClassLoader.getSystemResourceAsStream(DEFAULT_SETUP))); |
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211 | } |
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212 | catch (Exception e) { |
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213 | cls.setLibrary(null); |
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214 | e.printStackTrace(); |
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215 | } |
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216 | |
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217 | return cls; |
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218 | } |
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219 | |
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220 | public static Test suite() { |
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221 | return new TestSuite(EnsembleSelectionTest.class); |
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222 | } |
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223 | |
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224 | public static void main(String[] args){ |
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225 | junit.textui.TestRunner.run(suite()); |
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226 | } |
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227 | } |
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