Mercurial > hg > Members > kono > jpf-core

annotate src/tests/gov/nasa/jpf/test/java/lang/ClassLoaderTest.java @ 0:61d41facf527

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author Peter Mehlitz <Peter.C.Mehlitz@nasa.gov>
date Fri, 23 Jan 2015 10:14:01 -0800
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1 /*
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2 * Copyright (C) 2014, United States Government, as represented by the
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3 * Administrator of the National Aeronautics and Space Administration.
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4 * All rights reserved.
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5 *
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6 * The Java Pathfinder core (jpf-core) platform is licensed under the
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7 * Apache License, Version 2.0 (the "License"); you may not use this file except
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8 * in compliance 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 package gov.nasa.jpf.test.java.lang;
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19
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20 import gov.nasa.jpf.util.test.TestJPF;
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21
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22 import java.io.IOException;
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23 import java.io.InputStream;
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24 import java.net.URL;
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25 import java.util.Enumeration;
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26
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27 import org.junit.Test;
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28
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29 /**
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30 * test of java.lang.ClassLoader API
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31 */
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32 public class ClassLoaderTest extends TestJPF {
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33
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34 @Test
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35 public void testGetResource() {
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36 if(verifyNoPropertyViolation()) {
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37 testGetResourceImpl(new TestClassLoader());
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38 }
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39 }
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40
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41 @Test
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42 public void testGetResources() throws IOException{
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43 if(verifyNoPropertyViolation()) {
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44 testGetResourcesImpl(new TestClassLoader());
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45 }
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46 }
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47
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48 @Test
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49 public void testGetResourceAsStream() throws IOException{
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50 if(verifyNoPropertyViolation()) {
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51 testGetResourceAsStreamImpl(new TestClassLoader());
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52 }
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53 }
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54
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55 @Test
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56 public void testLoadClass() {
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57 if(verifyNoPropertyViolation()) {
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58 ClassLoader classLoader = new TestClassLoader();
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59 try {
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60 classLoader.loadClass("non_existing_class");
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61 fail();
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62 }catch(ClassNotFoundException e) {}
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63 }
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64 }
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65
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66 @Test
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67 public void testLoadClass2() {
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68 if(verifyNoPropertyViolation()) {
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69 ClassLoader classLoader = new TestClassLoader();
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70 try {
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71 classLoader.loadClass(ClassLoader.class.getName());
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72 }catch(ClassNotFoundException e) {
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73 fail(e.getMessage());
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74 }
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75 }
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76 }
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77
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78 @Test
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79 public void testGetSystemResource() {
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80 if(verifyNoPropertyViolation()) {
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81 testGetResourceImpl( ClassLoader.getSystemClassLoader());
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82 }
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83 }
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84
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85 @Test
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86 public void testGetSystemResources() throws IOException{
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87 if(verifyNoPropertyViolation()) {
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88 testGetResourcesImpl( ClassLoader.getSystemClassLoader());
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89 }
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90 }
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91
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92 @Test
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93 public void testGetSystemResourceAsStream() throws IOException{
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94 if(verifyNoPropertyViolation()) {
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95 testGetResourceAsStreamImpl( ClassLoader.getSystemClassLoader());
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96 }
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97 }
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98
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99 @Test
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100 public void testGetSystemClassLoader() {
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101 if(verifyNoPropertyViolation()) {
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102 ClassLoader classLoader = new TestClassLoader();
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103 assertNotNull(ClassLoader.getSystemClassLoader());
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104 assertNull(ClassLoader.getSystemClassLoader().getParent());
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105 assertFalse(classLoader.equals(ClassLoader.getSystemClassLoader()));
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106 }
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107 }
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108
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109 @Test
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110 public void testGetParent() {
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111 if(verifyNoPropertyViolation()) {
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112 ClassLoader classLoader = new TestClassLoader();
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113 assertNotNull(classLoader.getParent());
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114 assertEquals(classLoader.getParent(),ClassLoader.getSystemClassLoader());
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115 }
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116 }
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117
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118 @Test
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119 public void testGetParent2() {
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120 if(verifyNoPropertyViolation()) {
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121 ClassLoader parentClassLoader = new TestClassLoader();
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122 ClassLoader classLoader = new TestClassLoader(parentClassLoader);
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123 assertEquals(parentClassLoader, classLoader.getParent());
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124 }
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125 }
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126
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127 @Test
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128 public void testFoundResources() throws IOException {
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129 if(verifyNoPropertyViolation()) {
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130 TestClassLoader classLoader = new TestClassLoader();
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131 Enumeration<URL> enm = classLoader.findResources("not_existing_resource");
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132 assertNotNull(enm);
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133 assertFalse(enm.hasMoreElements());
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134 }
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135 }
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136
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137 private void testGetResourceImpl(ClassLoader classLoader) {
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138 assertNull(classLoader.getResource("not_existing_resource"));
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139 assertNotNull(classLoader.getResource("DiningPhil.class"));
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140 assertNull(classLoader.getResource("ClassLoader.class"));
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141 assertNotNull(classLoader.getResource("java/lang/ClassLoader.class"));
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142 }
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143
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144 private void testGetResourcesImpl(ClassLoader classLoader) throws IOException{
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145 assertFalse(classLoader.getResources("not_existing_resources").hasMoreElements());
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146
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147 Enumeration<?> e = classLoader.getResources("DiningPhil.class");
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148 assertTrue(e.hasMoreElements());
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149 assertNotNull(e.nextElement());
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150 assertFalse(e.hasMoreElements());
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151
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152 e = classLoader.getResources("ClassLoader.class");
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153 assertFalse(e.hasMoreElements());
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154
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155 // It should find at least two resources: 1. model class, 2. JDK class
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156 e = classLoader.getResources("java/lang/ClassLoader.class");
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157 assertTrue(e.hasMoreElements());
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158 assertNotNull(e.nextElement());
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159 assertTrue(e.hasMoreElements());
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160 assertNotNull(e.nextElement());
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161 }
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162
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163 private void testGetResourceAsStreamImpl(ClassLoader classLoader) throws IOException{
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164 assertNull(classLoader.getResourceAsStream("not_existing_resources"));
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165 InputStream is = classLoader.getResourceAsStream("DiningPhil.class");
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166 assertNotNull(is);
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167 assertTrue(is.read() > 0);
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168 }
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169
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170 class TestClassLoader extends ClassLoader {
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171
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172 public TestClassLoader() {
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173 super();
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174 }
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175
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176 public TestClassLoader(ClassLoader parent) {
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177 super(parent);
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178 }
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179
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180 @Override
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181 protected Enumeration<URL> findResources(String name) throws IOException {
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182 return super.findResources(name);
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183 }
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184 }
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185 }