How to use JavassistMockClassLoader class of org.powermock.core.classloader.javassist package

Best Powermock code snippet using org.powermock.core.classloader.javassist.JavassistMockClassLoader

Source:XStreamClassloaderExecutorTest.java Github

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...16package powermock.classloading;17import org.junit.Test;18import org.powermock.classloading.SingleClassloaderExecutor;19import org.powermock.core.classloader.MockClassLoader;20import org.powermock.core.classloader.javassist.JavassistMockClassLoader;21import org.powermock.core.transformers.ClassWrapper;22import org.powermock.core.transformers.MockTransformer;23import org.powermock.core.transformers.support.DefaultMockTransformerChain;24import powermock.classloading.classes.MyArgument;25import powermock.classloading.classes.MyClass;26import powermock.classloading.classes.MyCollectionHolder;27import powermock.classloading.classes.MyEnum;28import powermock.classloading.classes.MyEnumHolder;29import powermock.classloading.classes.MyHierarchicalFieldHolder;30import powermock.classloading.classes.MyHierarchicalOverloadedFieldHolder;31import powermock.classloading.classes.MyIntegerHolder;32import powermock.classloading.classes.MyPrimitiveArrayHolder;33import powermock.classloading.classes.MyReferenceFieldHolder;34import powermock.classloading.classes.MyReturnValue;35import powermock.classloading.classes.MyStaticFinalArgumentHolder;36import powermock.classloading.classes.MyStaticFinalNumberHolder;37import powermock.classloading.classes.MyStaticFinalPrimitiveHolder;38import powermock.classloading.classes.ReflectionMethodInvoker;39import java.lang.reflect.Method;40import java.util.Collection;41import java.util.LinkedList;42import java.util.concurrent.Callable;43import static org.junit.Assert.assertArrayEquals;44import static org.junit.Assert.assertEquals;45import static org.junit.Assert.assertFalse;46import static org.junit.Assert.assertNotSame;47import static org.junit.Assert.assertSame;48import static org.junit.Assert.assertTrue;49public class XStreamClassloaderExecutorTest {50 @Test51 public void loadsObjectGraphInSpecifiedClassloaderAndReturnsResultInOriginalClassloader() throws Exception {52 MockClassLoader classloader = createClassloader();53 final MyReturnValue expectedConstructorValue = new MyReturnValue(new MyArgument("first value"));54 final MyClass myClass = new MyClass(expectedConstructorValue);55 final MyArgument expected = new MyArgument("A value");56 MyReturnValue[] actual = new SingleClassloaderExecutor(classloader).execute(new Callable<MyReturnValue[]>() {57 public MyReturnValue[] call() throws Exception {58 assertEquals(JavassistMockClassLoader.class.getName(), this.getClass().getClassLoader().getClass().getName());59 return myClass.myMethod(expected);60 }61 });62 assertFalse(JavassistMockClassLoader.class.getName().equals(this.getClass().getClassLoader().getClass().getName()));63 final MyReturnValue myReturnValue = actual[0];64 assertEquals(expectedConstructorValue.getMyArgument().getValue(), myReturnValue.getMyArgument().getValue());65 assertEquals(expected.getValue(), actual[1].getMyArgument().getValue());66 }67 @Test68 public void loadsObjectGraphThatIncludesPrimitiveValuesInSpecifiedClassloaderAndReturnsResultInOriginalClassloader()69 throws Exception {70 MockClassLoader classloader = createClassloader();71 final Integer expected = 42;72 final MyIntegerHolder myClass = new MyIntegerHolder(expected);73 Integer actual = new SingleClassloaderExecutor(classloader).execute(new Callable<Integer>() {74 public Integer call() throws Exception {75 assertEquals(JavassistMockClassLoader.class.getName(), this.getClass().getClassLoader().getClass().getName());76 final int myInteger = myClass.getMyInteger();77 assertEquals((int) expected, myInteger);78 return myInteger;79 }80 });81 assertFalse(JavassistMockClassLoader.class.getName().equals(this.getClass().getClassLoader().getClass().getName()));82 assertEquals(expected, actual);83 }84 @Test85 public void loadsObjectGraphThatIncludesEnumsInSpecifiedClassloaderAndReturnsResultInOriginalClassloader()86 throws Exception {87 MockClassLoader classloader = createClassloader();88 final MyEnum expected = MyEnum.MyEnum1;89 final MyEnumHolder myClass = new MyEnumHolder(expected);90 MyEnum actual = new SingleClassloaderExecutor(classloader).execute(new Callable<MyEnum>() {91 public MyEnum call() throws Exception {92 assertEquals(JavassistMockClassLoader.class.getName(), this.getClass().getClassLoader().getClass().getName());93 MyEnum myEnum = myClass.getMyEnum();94 assertEquals(expected, myEnum);95 return myEnum;96 }97 });98 assertFalse(JavassistMockClassLoader.class.getName().equals(this.getClass().getClassLoader().getClass().getName()));99 assertEquals(expected, actual);100 }101 @Test102 public void clonesStaticFinalObjectFields() throws Exception {103 MockClassLoader classloader = createClassloader();104 final MyStaticFinalArgumentHolder expected = new MyStaticFinalArgumentHolder();105 MyStaticFinalArgumentHolder actual = new SingleClassloaderExecutor(classloader)106 .execute(new Callable<MyStaticFinalArgumentHolder>() {107 public MyStaticFinalArgumentHolder call() throws Exception {108 assertEquals(JavassistMockClassLoader.class.getName(), this.getClass().getClassLoader().getClass()109 .getName());110 MyStaticFinalArgumentHolder actual = new MyStaticFinalArgumentHolder();111 assertEquals(expected.getMyObject(), actual.getMyObject());112 return actual;113 }114 });115 assertFalse(JavassistMockClassLoader.class.getName().equals(this.getClass().getClassLoader().getClass().getName()));116 assertEquals(expected.getMyObject(), actual.getMyObject());117 }118 @Test119 public void clonesStaticFinalPrimitiveFields() throws Exception {120 MockClassLoader classloader = createClassloader();121 final MyStaticFinalPrimitiveHolder expected = new MyStaticFinalPrimitiveHolder();122 MyStaticFinalPrimitiveHolder actual = new SingleClassloaderExecutor(classloader)123 .execute(new Callable<MyStaticFinalPrimitiveHolder>() {124 public MyStaticFinalPrimitiveHolder call() throws Exception {125 assertEquals(JavassistMockClassLoader.class.getName(), this.getClass().getClassLoader().getClass()126 .getName());127 MyStaticFinalPrimitiveHolder actual = new MyStaticFinalPrimitiveHolder();128 assertEquals(expected.getMyInt(), actual.getMyInt());129 return actual;130 }131 });132 assertFalse(JavassistMockClassLoader.class.getName().equals(this.getClass().getClassLoader().getClass().getName()));133 assertEquals(expected.getMyInt(), actual.getMyInt());134 }135 @Test136 public void clonesStaticFinalNumberFields() throws Exception {137 MockClassLoader classloader = createClassloader();138 final MyStaticFinalNumberHolder expected = new MyStaticFinalNumberHolder();139 MyStaticFinalNumberHolder actual = new SingleClassloaderExecutor(classloader)140 .execute(new Callable<MyStaticFinalNumberHolder>() {141 public MyStaticFinalNumberHolder call() throws Exception {142 assertEquals(JavassistMockClassLoader.class.getName(), this.getClass().getClassLoader().getClass()143 .getName());144 MyStaticFinalNumberHolder actual = new MyStaticFinalNumberHolder();145 assertEquals(expected.getMyLong(), actual.getMyLong());146 return actual;147 }148 });149 assertFalse(JavassistMockClassLoader.class.getName().equals(this.getClass().getClassLoader().getClass().getName()));150 assertEquals(expected.getMyLong(), actual.getMyLong());151 }152 @Test153 public void loadsObjectGraphThatIncludesPrimitiveArraysInSpecifiedClassloaderAndReturnsResultInOriginalClassloader()154 throws Exception {155 MockClassLoader classloader = createClassloader();156 final int[] expected = new int[] { 1, 2 };157 final MyPrimitiveArrayHolder myClass = new MyPrimitiveArrayHolder(expected);158 int[] actual = new SingleClassloaderExecutor(classloader).execute(new Callable<int[]>() {159 public int[] call() throws Exception {160 assertEquals(JavassistMockClassLoader.class.getName(), this.getClass().getClassLoader().getClass().getName());161 int[] myArray = myClass.getMyArray();162 assertArrayEquals(expected, myArray);163 return myArray;164 }165 });166 assertFalse(JavassistMockClassLoader.class.getName().equals(this.getClass().getClassLoader().getClass().getName()));167 assertArrayEquals(expected, actual);168 }169 @Test170 public void loadsObjectGraphThatIncludesCollectionInSpecifiedClassloaderAndReturnsResultInOriginalClassloader()171 throws Exception {172 final MockClassLoader classloader = createClassloader();173 final Collection<MyReturnValue> expected = new LinkedList<MyReturnValue>();174 expected.add(new MyReturnValue(new MyArgument("one")));175 expected.add(new MyReturnValue(new MyArgument("two")));176 final MyCollectionHolder myClass = new MyCollectionHolder(expected);177 Collection<?> actual = new SingleClassloaderExecutor(classloader).execute(new Callable<Collection<?>>() {178 public Collection<?> call() throws Exception {179 assertEquals(JavassistMockClassLoader.class.getName(), this.getClass().getClassLoader().getClass().getName());180 Collection<?> myCollection = myClass.getMyCollection();181 for (Object object : myCollection) {182 assertEquals(JavassistMockClassLoader.class.getName(), object.getClass().getClassLoader().getClass()183 .getName());184 }185 return myCollection;186 }187 });188 assertFalse(JavassistMockClassLoader.class.getName().equals(this.getClass().getClassLoader().getClass().getName()));189 assertEquals(2, actual.size());190 for (Object object : actual) {191 final String value = ((MyReturnValue) object).getMyArgument().getValue();192 assertTrue(value.equals("one") || value.equals("two"));193 }194 }195 @Test196 public void usesReferenceCloningWhenTwoFieldsPointToSameInstance() throws Exception {197 final MockClassLoader classloader = createClassloader();198 final MyReferenceFieldHolder tested = new MyReferenceFieldHolder();199 assertSame(tested.getMyArgument1(), tested.getMyArgument2());200 assertSame(tested.getMyArgument1(), MyReferenceFieldHolder.MY_ARGUMENT);201 new SingleClassloaderExecutor(classloader).execute(new Runnable() {202 public void run() {203 assertEquals(JavassistMockClassLoader.class.getName(), this.getClass().getClassLoader().getClass().getName());204 assertEquals(tested.getMyArgument1(), tested.getMyArgument2());205 assertEquals(tested.getMyArgument1(), MyReferenceFieldHolder.MY_ARGUMENT);206 assertSame(tested.getMyArgument1(), tested.getMyArgument2());207 // FIXME: This assertion should work:208 // assertSame(tested.getMyArgument1(), MyReferenceFieldHolder.MY_ARGUMENT);209 }210 });211 }212 @Test213 public void worksWithObjectHierarchy() throws Exception {214 final MockClassLoader classloader = createClassloader();215 final MyHierarchicalFieldHolder tested = new MyHierarchicalFieldHolder();216 assertSame(tested.getMyArgument1(), tested.getMyArgument2());217 assertEquals(tested.getMyArgument3(), tested.getMyArgument2());218 new SingleClassloaderExecutor(classloader).execute(new Runnable() {219 public void run() {220 assertEquals(JavassistMockClassLoader.class.getName(), this.getClass().getClassLoader().getClass().getName());221 assertSame(tested.getMyArgument1(), tested.getMyArgument2());222 assertEquals(tested.getMyArgument3(), tested.getMyArgument2());223 }224 });225 }226 @Test227 public void worksWithObjectHierarchyAndOverloadedFields() throws Exception {228 final MockClassLoader classloader = createClassloader();229 final MyHierarchicalOverloadedFieldHolder tested = new MyHierarchicalOverloadedFieldHolder();230 assertSame(tested.getMyArgument1(), tested.getMyArgument2());231 assertEquals(tested.getMyArgument1(), tested.getMyArgument3());232 assertSame(tested.getMyArgument3(), MyHierarchicalOverloadedFieldHolder.MY_ARGUMENT);233 assertNotSame(MyReferenceFieldHolder.MY_ARGUMENT, MyHierarchicalOverloadedFieldHolder.MY_ARGUMENT);234 assertEquals(MyReferenceFieldHolder.MY_ARGUMENT, MyHierarchicalOverloadedFieldHolder.MY_ARGUMENT);235 new SingleClassloaderExecutor(classloader).execute(new Runnable() {236 public void run() {237 assertEquals(JavassistMockClassLoader.class.getName(), this.getClass().getClassLoader().getClass().getName());238 assertSame(tested.getMyArgument1(), tested.getMyArgument2());239 assertEquals(tested.getMyArgument1(), tested.getMyArgument3());240 // Note: Cannot be same using X-Stream241 assertEquals(tested.getMyArgument3(), MyHierarchicalOverloadedFieldHolder.MY_ARGUMENT);242 assertNotSame(MyReferenceFieldHolder.MY_ARGUMENT, MyHierarchicalOverloadedFieldHolder.MY_ARGUMENT);243 assertEquals(MyReferenceFieldHolder.MY_ARGUMENT, MyHierarchicalOverloadedFieldHolder.MY_ARGUMENT);244 }245 });246 }247 @Test248 public void worksWithReflection() throws Exception {249 final MockClassLoader classloader = createClassloader();250 final MyArgument myArgument = new MyArgument("test");251 final MyReturnValue instance = new MyReturnValue(myArgument);252 Method method = instance.getClass().getMethod("getMyArgument");253 final ReflectionMethodInvoker tested = new ReflectionMethodInvoker(method, instance);254 new SingleClassloaderExecutor(classloader).execute(new Runnable() {255 public void run() {256 Object invoke = tested.invoke();257 assertSame(invoke, myArgument);258 }259 });260 }261 private MockClassLoader createClassloader() {262 MockClassLoader classloader = new JavassistMockClassLoader(new String[] { MyClass.class.getName(),263 MyArgument.class.getName(), MyReturnValue.class.getName() });264 MockTransformer mainMockTransformer = new MockTransformer<Object>() {265 @Override266 public ClassWrapper<Object> transform(ClassWrapper<Object> clazz) throws Exception {267 return clazz;268 }269 };270 classloader.setMockTransformerChain(DefaultMockTransformerChain.newBuilder().append(mainMockTransformer).build());271 return classloader;272 }273}...

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Source:ObjenesisClassloaderExecutorTest.java Github

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...17import org.junit.Ignore;18import org.junit.Test;19import org.powermock.classloading.SingleClassloaderExecutor;20import org.powermock.core.classloader.MockClassLoader;21import org.powermock.core.classloader.javassist.JavassistMockClassLoader;22import org.powermock.core.transformers.ClassWrapper;23import org.powermock.core.transformers.MockTransformer;24import org.powermock.core.transformers.support.DefaultMockTransformerChain;25import powermock.classloading.classes.MyArgument;26import powermock.classloading.classes.MyClass;27import powermock.classloading.classes.MyEnum;28import powermock.classloading.classes.MyEnumHolder;29import powermock.classloading.classes.MyHierarchicalFieldHolder;30import powermock.classloading.classes.MyIntegerHolder;31import powermock.classloading.classes.MyPrimitiveArrayHolder;32import powermock.classloading.classes.MyReferenceFieldHolder;33import powermock.classloading.classes.MyReturnValue;34import powermock.classloading.classes.ReflectionMethodInvoker;35import java.lang.reflect.Method;36import java.util.concurrent.Callable;37import static org.junit.Assert.assertArrayEquals;38import static org.junit.Assert.assertEquals;39import static org.junit.Assert.assertFalse;40import static org.junit.Assert.assertSame;41@Ignore("Test are failed on JDK more that 1.6. On Travis we can run only on JDK8 and JDK9")42public class ObjenesisClassloaderExecutorTest {43 44 @Test45 public void loadsObjectGraphInSpecifiedClassloaderAndReturnsResultInOriginalClassloader() throws Exception {46 MockClassLoader classloader = createClassloader();47 final MyReturnValue expectedConstructorValue = new MyReturnValue(new MyArgument("first value"));48 final MyClass myClass = new MyClass(expectedConstructorValue);49 final MyArgument expected = new MyArgument("A value");50 MyReturnValue[] actual = new SingleClassloaderExecutor(classloader).execute(new Callable<MyReturnValue[]>() {51 public MyReturnValue[] call() throws Exception {52 assertEquals(JavassistMockClassLoader.class.getName(), this.getClass()53 .getClassLoader()54 .getClass()55 .getName());56 return myClass.myMethod(expected);57 }58 });59 60 assertFalse(MockClassLoader.class.getName().equals(this.getClass().getClassLoader().getClass().getName()));61 62 final MyReturnValue myReturnValue = actual[0];63 assertEquals(expectedConstructorValue.getMyArgument().getValue(), myReturnValue.getMyArgument().getValue());64 assertEquals(expected.getValue(), actual[1].getMyArgument().getValue());65 }66 67 @Test68 public void loadsObjectGraphThatIncludesPrimitiveValuesInSpecifiedClassloaderAndReturnsResultInOriginalClassloader()69 throws Exception {70 MockClassLoader classloader = createClassloader();71 final Integer expected = 42;72 final MyIntegerHolder myClass = new MyIntegerHolder(expected);73 Integer actual = new SingleClassloaderExecutor(classloader).execute(new Callable<Integer>() {74 public Integer call() throws Exception {75 assertEquals(JavassistMockClassLoader.class.getName(), this.getClass()76 .getClassLoader()77 .getClass()78 .getName());79 final int myInteger = myClass.getMyInteger();80 assertEquals((int) expected, myInteger);81 return myInteger;82 }83 });84 85 assertFalse(MockClassLoader.class.getName().equals(this.getClass().getClassLoader().getClass().getName()));86 87 assertEquals(expected, actual);88 }89 90 @Test91 public void loadsObjectGraphThatIncludesEnumsInSpecifiedClassloaderAndReturnsResultInOriginalClassloader()92 throws Exception {93 MockClassLoader classloader = createClassloader();94 final MyEnum expected = MyEnum.MyEnum1;95 final MyEnumHolder myClass = new MyEnumHolder(expected);96 MyEnum actual = new SingleClassloaderExecutor(classloader).execute(new Callable<MyEnum>() {97 public MyEnum call() throws Exception {98 assertEquals(JavassistMockClassLoader.class.getName(), this.getClass()99 .getClassLoader()100 .getClass()101 .getName());102 MyEnum myEnum = myClass.getMyEnum();103 assertEquals(expected, myEnum);104 return myEnum;105 }106 });107 108 assertFalse(MockClassLoader.class.getName().equals(this.getClass().getClassLoader().getClass().getName()));109 assertEquals(expected, actual);110 }111 112 113 @Test114 public void loadsObjectGraphThatIncludesPrimitiveArraysInSpecifiedClassloaderAndReturnsResultInOriginalClassloader()115 throws Exception {116 MockClassLoader classloader = createClassloader();117 final int[] expected = new int[]{1, 2};118 final MyPrimitiveArrayHolder myClass = new MyPrimitiveArrayHolder(expected);119 int[] actual = new SingleClassloaderExecutor(classloader).execute(new Callable<int[]>() {120 public int[] call() throws Exception {121 assertEquals(JavassistMockClassLoader.class.getName(), this.getClass()122 .getClassLoader()123 .getClass()124 .getName());125 int[] myArray = myClass.getMyArray();126 assertArrayEquals(expected, myArray);127 return myArray;128 }129 });130 131 assertFalse(MockClassLoader.class.getName().equals(this.getClass().getClassLoader().getClass().getName()));132 assertArrayEquals(expected, actual);133 }134 135 @Test136 public void usesReferenceCloningWhenTwoFieldsPointToSameInstance() throws Exception {137 final MockClassLoader classloader = createClassloader();138 final MyReferenceFieldHolder tested = new MyReferenceFieldHolder();139 assertSame(tested.getMyArgument1(), tested.getMyArgument2());140 assertSame(tested.getMyArgument1(), MyReferenceFieldHolder.MY_ARGUMENT);141 new SingleClassloaderExecutor(classloader).execute(new Runnable() {142 public void run() {143 assertEquals(JavassistMockClassLoader.class.getName(), this.getClass()144 .getClassLoader()145 .getClass()146 .getName());147 assertEquals(tested.getMyArgument1(), tested.getMyArgument2());148 assertEquals(tested.getMyArgument1(), MyReferenceFieldHolder.MY_ARGUMENT);149 assertSame(tested.getMyArgument1(), tested.getMyArgument2());150 // FIXME: This assertion should work:151 // assertSame(tested.getMyArgument1(), MyReferenceFieldHolder.MY_ARGUMENT);152 }153 });154 }155 156 @Test157 public void worksWithObjectHierarchy() throws Exception {158 final MockClassLoader classloader = createClassloader();159 final MyHierarchicalFieldHolder tested = new MyHierarchicalFieldHolder();160 assertSame(tested.getMyArgument1(), tested.getMyArgument2());161 assertEquals(tested.getMyArgument3(), tested.getMyArgument2());162 new SingleClassloaderExecutor(classloader).execute(new Runnable() {163 public void run() {164 assertEquals(JavassistMockClassLoader.class.getName(), this.getClass()165 .getClassLoader()166 .getClass()167 .getName());168 assertSame(tested.getMyArgument1(), tested.getMyArgument2());169 assertEquals(tested.getMyArgument3(), tested.getMyArgument2());170 }171 });172 }173 174 @Test175 public void worksWithReflection() throws Exception {176 final MockClassLoader classloader = createClassloader();177 final MyArgument myArgument = new MyArgument("test");178 final MyReturnValue instance = new MyReturnValue(myArgument);179 Method method = instance.getClass().getMethod("getMyArgument");180 final ReflectionMethodInvoker tested = new ReflectionMethodInvoker(method, instance);181 new SingleClassloaderExecutor(classloader).execute(new Runnable() {182 public void run() {183 Object invoke = tested.invoke();184 assertSame(invoke, myArgument);185 }186 });187 }188 189 private MockClassLoader createClassloader() {190 MockClassLoader classloader = new JavassistMockClassLoader(new String[]{MyClass.class.getName(),191 MyArgument.class.getName(), MyReturnValue.class.getName()});192 MockTransformer mainMockTransformer = new MockTransformer<Object>() {193 @Override194 public ClassWrapper<Object> transform(ClassWrapper<Object> clazz) throws Exception {195 return clazz;196 }197 };198 classloader.setMockTransformerChain(DefaultMockTransformerChain.newBuilder()199 .append(mainMockTransformer)200 .build());201 return classloader;202 }203}...

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JavassistMockClassLoader

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1ClassPool pool = ClassPool.getDefault();2pool.insertClassPath(new ClassClassPath(JavassistMockClassLoaderTest.class));3pool.insertClassPath(new ClassClassPath(JavassistMockClassLoader.class));4pool.insertClassPath(new ClassClassPath(JavassistMockClassLoaderTest.class));5CtClass ctClass = pool.get("org.powermock.core.classloader.MockClassLoaderTest$MockClassLoaderTestHelper");6CtMethod ctMethod = ctClass.getDeclaredMethod("methodToBeMocked");7ctMethod.setBody("{return \"foo\";}");8byte[] bytes = ctClass.toBytecode();9ctClass.detach();10Class<?> clazz = new JavassistMockClassLoader().loadMockClass("org.powermock.core.classloader.MockClassLoaderTest$MockClassLoaderTestHelper",11bytes);12Object instance = clazz.newInstance();13assertEquals("foo", instance.getClass().getMethod("methodToBeMocked").invoke(instance));14}

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JavassistMockClassLoader

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1import org.powermock.core.classloader.javassist.JavassistMockClassLoader;2public class 4 {3 public static void main(String[] args) {4 try {5 JavassistMockClassLoader cl = new JavassistMockClassLoader();6 Class<?> c = cl.loadClass("com.example.MyClass");7 Object o = c.newInstance();8 System.out.println(o);9 } catch (Exception e) {10 e.printStackTrace();11 }12 }13}14import org.powermock.core.classloader.javassist.JavassistMockClassLoader;15public class 5 {16 public static void main(String[] args) {17 try {18 JavassistMockClassLoader cl = new JavassistMockClassLoader(ClassLoader.getSystemClassLoader());19 Class<?> c = cl.loadClass("com.example.MyClass");20 Object o = c.newInstance();21 System.out.println(o);22 } catch (Exception e) {23 e.printStackTrace();24 }25 }26}

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JavassistMockClassLoader

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1public class 4 {2 public static void main(String[] args) throws Exception {3 ClassLoader classLoader = new JavassistMockClassLoader();4 Class<?> aClass = classLoader.loadClass("com.example.test.Test");5 Object instance = aClass.newInstance();6 System.out.println(aClass);7 System.out.println(instance);8 }9}10package com.example.test;11public class Test {12 public Test() {13 System.out.println("Test constructor");14 }15}16This is the output of the above code with the JavassistMockClassLoader and the JavassistMockClassLoader .setUseCache(false) :17This is the output of the above code with the JavassistMockClassLoader and the JavassistMockClassLoader .setUseCache(true) :18This is the output of the above code with the JavassistMockClassLoader and the JavassistMockClassLoader .setUseCache(true) and the JavassistMockClassLoader .setUseOriginalClassLoader

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JavassistMockClassLoader

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1public class 4 {2 public static void main(String[] args) throws Exception {3 ClassLoader cl = new JavassistMockClassLoader();4 Class<?> clazz = cl.loadClass("com.example.ClassToMock");5 Method method = clazz.getMethod("methodToMock");6 System.out.println(method.invoke(clazz.newInstance()));7 }8}9public class 5 {10 public static void main(String[] args) throws Exception {11 ClassLoader cl = new JavassistMockClassLoader();12 Class<?> clazz = cl.loadClass("com.example.ClassToMock");13 Method method = clazz.getMethod("methodToMock");14 System.out.println(method.invoke(clazz.newInstance()));15 }16}17public class 6 {18 public static void main(String[] args) throws Exception {19 ClassLoader cl = new JavassistMockClassLoader();20 Class<?> clazz = cl.loadClass("com.example.ClassToMock");21 Method method = clazz.getMethod("methodToMock");22 System.out.println(method.invoke(clazz.newInstance()));23 }24}25public class 7 {26 public static void main(String[] args) throws Exception {27 ClassLoader cl = new JavassistMockClassLoader();28 Class<?> clazz = cl.loadClass("com.example.ClassToMock");29 Method method = clazz.getMethod("methodToMock");30 System.out.println(method.invoke(clazz.newInstance()));31 }32}33public class 8 {34 public static void main(String[] args) throws Exception {35 ClassLoader cl = new JavassistMockClassLoader();36 Class<?> clazz = cl.loadClass("com.example.ClassToMock");37 Method method = clazz.getMethod("methodToMock");38 System.out.println(method.invoke(clazz.newInstance()));39 }40}41public class 9 {42 public static void main(String[] args) throws Exception {

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JavassistMockClassLoader

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1package org.powermock.core.classloader.javassist;2import java.io.IOException;3import java.io.InputStream;4import java.net.URL;5import java.net.URLClassLoader;6import java.util.Enumeration;7import javassist.ClassPool;8import javassist.CtClass;9import javassist.CtMethod;10import javassist.NotFoundException;11import org.powermock.core.classloader.MockClassLoader;12import org.powermock.core.classloader.MockClassLoaderParameters;13public class JavassistMockClassLoader extends MockClassLoader {14 private final ClassPool classPool;15 private final URLClassLoader classLoader;16 public JavassistMockClassLoader(final ClassLoader classLoader, final MockClassLoaderParameters mockClassLoaderParameters)17 throws IOException {18 super(classLoader, mockClassLoaderParameters);19 this.classPool = new ClassPool();20 this.classPool.appendClassPath(new ClassLoaderClassPath(classLoader));21 this.classLoader = (URLClassLoader) classLoader;22 }23 protected Class<?> loadModifiedClass(final String className) throws IOException, NotFoundException {24 final CtClass ctClass = classPool.get(className);25 final CtMethod[] declaredMethods = ctClass.getDeclaredMethods();26 for (final CtMethod method : declaredMethods) {27 if (isMethodToMock(method)) {28 if (isStatic(method)) {29 mockStaticMethod(method);30 } else {31 mockInstanceMethod(method);32 }33 }34 }35 return ctClass.toClass(classLoader, null);36 }37 private void mockInstanceMethod(final CtMethod method) throws NotFoundException {38 final String name = method.getName();39 final CtClass declaringClass = method.getDeclaringClass();40 final String declaringClassName = declaringClass.getName();41 final String body = "{ return org.powermock.core.classloader.javassist.JavassistMockClassLoader.this.callInstanceMethod(\""42 + declaringClassName + "\", \"" + name + "\", $args, $sig, $type); }";43 method.setBody(body);44 }45 private void mockStaticMethod(final CtMethod method) throws NotFoundException {46 final String name = method.getName();47 final CtClass declaringClass = method.getDeclaringClass();48 final String declaringClassName = declaringClass.getName();49 final String body = "{ return org.powermock.core.classloader.javassist.JavassistMockClassLoader.this.callStaticMethod(\""50 + declaringClassName + "\", \"" + name + "\", $args, $sig, $type); }";51 method.setBody(body);

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1package com.powermock; import org.powermock.core.classloader.javassist.JavassistMockClassLoader;2import org.powermock.core.classloader.javassist.JavassistMockClassLoaderFactory; import3org.powermock.core.classloader.javassist.JavassistMockClassLoaderParameters; public class4MainClass { public static void main(String[] args) { JavassistMockClassLoaderParameters5parameters = new JavassistMockClassLoaderParameters(); parameters.setMockPolicy("mock-policy.xml");6parameters.setTargetClass("com.powermock.ClassToMock"); JavassistMockClassLoaderFactory7factory = new JavassistMockClassLoaderFactory(); JavassistMockClassLoader classLoader =8factory.create(parameters); try { Class<?> clazz = classLoader.loadClass(parameters.getTargetClass());9Object obj = clazz.newInstance(); clazz.getMethod("methodToMock").invoke(obj); } catch10(Exception e) { e.printStackTrace(); } } }11package com.powermock; import org.powermock.core.classloader.javassist.JavassistMockClassLoader;12import org.powermock.core.classloader.javassist.JavassistMockClassLoaderFactory; import13org.powermock.core.classloader.javassist.JavassistMockClassLoaderParameters; public class14MainClass { public static void main(String[] args) { JavassistMockClassLoaderParameters15parameters = new JavassistMockClassLoaderParameters(); parameters.setMockPolicy("mock-policy.xml");16parameters.setTargetClass("com.powermock.ClassToMock"); JavassistMockClassLoaderFactory17factory = new JavassistMockClassLoaderFactory(); JavassistMockClassLoader classLoader =18factory.create(parameters); try { Class<?> clazz = classLoader.loadClass(parameters.getTargetClass());19Object obj = clazz.newInstance(); clazz.getMethod("methodToMock").invoke(obj); } catch20(Exception e) { e.printStackTrace(); } } }21package com.powermock; import org.powermock.core.classloader.javassist.JavassistMockClassLoader;22import org.powermock.core.classloader.javassist.JavassistMockClassLoaderFactory

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1import org.powermock.core.classloader.javassist.JavassistMockClassLoader;2import java.lang.reflect.Method;3import java.net.URL;4import java.net.URLClassLoader;5public class 4 {6 public static void main(String[] args) throws Exception {7 ClassLoader classLoader = new JavassistMockClassLoader(new URLClassLoader(new URL[] {new8 Class<?> clazz = classLoader.loadClass("com.abc.def.ghi");9 Method method = clazz.getDeclaredMethod("method", null);10 method.invoke(clazz.newInstance(), null);11 }12}

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JavassistMockClassLoader

Using AI Code Generation

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1import java.lang.reflect.Method;2import org.powermock.core.classloader.MockClassLoader;3import org.powermock.core.classloader.javassist.JavassistMockClassLoader;4public class 4 {5public static void main(String[] args) throws Exception {6JavassistMockClassLoader mockClassLoader = new JavassistMockClassLoader(4.class.getClassLoader());7Class<?> clazz = mockClassLoader.loadClass("4");8Object instance = clazz.newInstance();9Method method = clazz.getMethod("method");10method.invoke(instance);11}12}

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JavassistMockClassLoader

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1 private void mockInstanceMethod(final CtMethod method) throws NotFoundException {2 final String name = method.getName();3 final CtClass declaringClass = method.getDeclaringClass();4 final String declaringClassName = declaringClass.getName();5 final String body = "{ return org.powermock.core.classloader.javassist.JavassistMockClassLoader.this.callInstanceMethod(\""6 + declaringClassName + "\", \"" + name + "\", $args, $sig, $type); }";7 method.setBody(body);8 }9 private void mockStaticMethod(final CtMethod method) throws NotFoundException {10 final String name = method.getName();11 final CtClass declaringClass = method.getDeclaringClass();12 final String declaringClassName = declaringClass.getName();13 final String body = "{ return org.powermock.core.classloader.javassist.JavassistMockClassLoader.this.callStaticMethod(\""14 + declaringClassName + "\", \"" + name + "\", $args, $sig, $type); }";15 method.setBody(body);

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JavassistMockClassLoader

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1import org.powermock.core.classloader.javassist.JavassistMockClassLoader;2import java.lang.reflect.Method;3import java.net.URL;4import java.net.URLClassLoader;5public class 4 {6 public static void main(String[] args) throws Exception {7 ClassLoader classLoader = new JavassistMockClassLoader(new URLClassLoader(new URL[] {new8 Class<?> clazz = classLoader.loadClass("com.abc.def.ghi");9 Method method = clazz.getDeclaredMethod("method", null);10 method.invoke(clazz.newInstance(), null);11 }12}

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JavassistMockClassLoader

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1import java.lang.reflect.Method;2import org.powermock.core.classloader.MockClassLoader;3import org.powermock.core.classloader.javassist.JavassistMockClassLoader;4public class 4 {5public static void main(String[] args) throws Exception {6JavassistMockClassLoader mockClassLoader = new JavassistMockClassLoader(4.class.getClassLoader());7Class<?> clazz = mockClassLoader.loadClass("4");8Object instance = clazz.newInstance();9Method method = clazz.getMethod("method");10method.invoke(instance);11}12}

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