How to use TestClassTransformer class of org.powermock.core.transformers package

Best Powermock code snippet using org.powermock.core.transformers.TestClassTransformer

Source:AbstractCommonTestSuiteChunkerImpl.java Github

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...4import org.powermock.core.classloader.annotations.PrepareForTest;5import org.powermock.core.classloader.annotations.PrepareOnlyThisForTest;6import org.powermock.core.classloader.annotations.SuppressStaticInitializationFor;7import org.powermock.core.transformers.MockTransformer;8import org.powermock.core.transformers.impl.TestClassTransformer;9import org.powermock.tests.utils.ArrayMerger;10import org.powermock.tests.utils.IgnorePackagesExtractor;11import org.powermock.tests.utils.TestChunk;12import org.powermock.tests.utils.TestClassesExtractor;13import org.powermock.tests.utils.TestSuiteChunker;14import java.lang.annotation.Annotation;15import java.lang.reflect.Method;16import java.util.ArrayList;17import java.util.LinkedHashMap;18import java.util.LinkedList;19import java.util.List;20/**21 *22 */23public abstract class AbstractCommonTestSuiteChunkerImpl implements TestSuiteChunker {24 protected static final int DEFAULT_TEST_LISTENERS_SIZE = 1;25 protected static final int NOT_INITIALIZED = -1;26 protected static final int INTERNAL_INDEX_NOT_FOUND = NOT_INITIALIZED;27 /*28 * Maps between a specific class and a map of test methods loaded by a29 * specific mock class loader.30 */31 private final List<TestCaseEntry> internalSuites = new LinkedList<TestCaseEntry>();32 private final TestClassesExtractor prepareForTestExtractor = new PrepareForTestExtractorImpl();33 private final TestClassesExtractor suppressionExtractor = new StaticConstructorSuppressExtractorImpl();34 /*35 * Maps the list of test indexes that is assigned to a specific test suite36 * index.37 */38 protected final LinkedHashMap<Integer, List<Integer>> testAtDelegateMapper = new LinkedHashMap<Integer, List<Integer>>();39 protected final Class<?>[] testClasses;40 private final IgnorePackagesExtractor ignorePackagesExtractor = new PowerMockIgnorePackagesExtractorImpl();41 private final ArrayMerger arrayMerger = new ArrayMergerImpl();42 private int currentTestIndex = NOT_INITIALIZED;43 protected AbstractCommonTestSuiteChunkerImpl(Class<?> testClass) throws Exception {44 this(new Class[]{testClass});45 }46 protected AbstractCommonTestSuiteChunkerImpl(Class<?>... testClasses) throws Exception {47 this.testClasses = testClasses;48 for (Class<?> clazz : testClasses) {49 chunkClass(clazz);50 }51 }52 @Override53 public int getChunkSize() {54 return getTestChunks().size();55 }56 public List<TestChunk> getTestChunks() {57 List<TestChunk> allChunks = new LinkedList<TestChunk>();58 for (TestCaseEntry entry : internalSuites) {59 for (TestChunk chunk : entry.getTestChunks()) {60 allChunks.add(chunk);61 }62 }63 return allChunks;64 }65 public List<TestChunk> getTestChunksEntries(Class<?> testClass) {66 for (TestCaseEntry entry : internalSuites) {67 if (entry.getTestClass().equals(testClass)) {68 return entry.getTestChunks();69 }70 }71 return null;72 }73 public TestChunk getTestChunk(Method method) {74 for (TestChunk testChunk : getTestChunks()) {75 if (testChunk.isMethodToBeExecutedByThisClassloader(method)) {76 return testChunk;77 }78 }79 return null;80 }81 protected void chunkClass(final Class<?> testClass) throws Exception {82 List<Method> testMethodsForOtherClassLoaders = new ArrayList<Method>();83 MockTransformer[] extraMockTransformers = createDefaultExtraMockTransformers(testClass, testMethodsForOtherClassLoaders);84 final String[] ignorePackages = ignorePackagesExtractor.getPackagesToIgnore(testClass);85 final ClassLoader defaultMockLoader = createDefaultMockLoader(testClass, extraMockTransformers, ignorePackages);86 List<Method> currentClassloaderMethods = new LinkedList<Method>();87 // Put the first suite in the map of internal suites.88 TestChunk defaultTestChunk = new TestChunkImpl(defaultMockLoader, currentClassloaderMethods);89 List<TestChunk> testChunks = new LinkedList<TestChunk>();90 testChunks.add(defaultTestChunk);91 internalSuites.add(new TestCaseEntry(testClass, testChunks));92 initEntries(internalSuites);93 if (!currentClassloaderMethods.isEmpty()) {94 List<TestChunk> allTestChunks = internalSuites.get(0).getTestChunks();95 for (TestChunk chunk : allTestChunks.subList(1, allTestChunks.size())) {96 for (Method m : chunk.getTestMethodsToBeExecutedByThisClassloader()) {97 testMethodsForOtherClassLoaders.add(m);98 }99 }100 } else if (2 <= internalSuites.size()101 || 1 == internalSuites.size()102 && 2 <= internalSuites.get(0).getTestChunks().size()) {103 /*104 * If we don't have any test that should be executed by the default105 * class loader remove it to avoid duplicate test print outs.106 */107 internalSuites.get(0).getTestChunks().remove(0);108 }109 //else{ /*Delegation-runner maybe doesn't use test-method annotations!*/ }110 }111 private ClassLoader createDefaultMockLoader(Class<?> testClass, MockTransformer[] extraMockTransformers, String[] ignorePackages) {112 final ClassLoader defaultMockLoader;113 if (testClass.isAnnotationPresent(PrepareEverythingForTest.class)) {114 defaultMockLoader = createNewClassloader(testClass, new String[]{MockClassLoader.MODIFY_ALL_CLASSES},115 ignorePackages, extraMockTransformers);116 } else {117 final String[] prepareForTestClasses = prepareForTestExtractor.getTestClasses(testClass);118 final String[] suppressStaticClasses = suppressionExtractor.getTestClasses(testClass);119 defaultMockLoader = createNewClassloader(testClass, arrayMerger.mergeArrays(String.class, prepareForTestClasses, suppressStaticClasses),120 ignorePackages, extraMockTransformers);121 }122 return defaultMockLoader;123 }124 private ClassLoader createNewClassloader(Class<?> testClass, String[] classesToLoadByMockClassloader,125 final String[] packagesToIgnore, MockTransformer... extraMockTransformers) {126 final MockClassLoaderFactory classLoaderFactory = getMockClassLoaderFactory(testClass, classesToLoadByMockClassloader, packagesToIgnore, extraMockTransformers);127 return classLoaderFactory.create();128 }129 protected MockClassLoaderFactory getMockClassLoaderFactory(Class<?> testClass, String[] preliminaryClassesToLoadByMockClassloader, String[] packagesToIgnore, MockTransformer[] extraMockTransformers) {130 return new MockClassLoaderFactory(testClass, preliminaryClassesToLoadByMockClassloader, packagesToIgnore, extraMockTransformers);131 }132 private MockTransformer[] createDefaultExtraMockTransformers(Class<?> testClass, List<Method> testMethodsThatRunOnOtherClassLoaders) {133 if (null == testMethodAnnotation()) {134 return new MockTransformer[0];135 } else {136 return new MockTransformer[]{137 TestClassTransformer138 .forTestClass(testClass)139 .removesTestMethodAnnotation(testMethodAnnotation())140 .fromMethods(testMethodsThatRunOnOtherClassLoaders)141 };142 }143 }144 protected Class<? extends Annotation> testMethodAnnotation() {145 return null;146 }147 private void initEntries(List<TestCaseEntry> entries) {148 for (TestCaseEntry testCaseEntry : entries) {149 final Class<?> testClass = testCaseEntry.getTestClass();150 findMethods(testCaseEntry, testClass);151 }152 }153 private void findMethods(TestCaseEntry testCaseEntry, Class<?> testClass) {154 Method[] allMethods = testClass.getMethods();155 for (Method method : allMethods) {156 putMethodToChunk(testCaseEntry, testClass, method);157 }158 testClass = testClass.getSuperclass();159 if (!Object.class.equals(testClass)) {160 findMethods(testCaseEntry, testClass);161 }162 }163 private void putMethodToChunk(TestCaseEntry testCaseEntry, Class<?> testClass, Method method) {164 if (shouldExecuteTestForMethod(testClass, method)) {165 currentTestIndex++;166 if (hasChunkAnnotation(method)) {167 LinkedList<Method> methodsInThisChunk = new LinkedList<Method>();168 methodsInThisChunk.add(method);169 final String[] staticSuppressionClasses = getStaticSuppressionClasses(testClass, method);170 TestClassTransformer[] extraTransformers = null == testMethodAnnotation()171 ? new TestClassTransformer[0]172 : new TestClassTransformer[]{173 TestClassTransformer.forTestClass(testClass)174 .removesTestMethodAnnotation(testMethodAnnotation())175 .fromAllMethodsExcept(method)176 };177 final ClassLoader mockClassloader;178 if (method.isAnnotationPresent(PrepareEverythingForTest.class)) {179 mockClassloader = createNewClassloader(testClass, new String[]{MockClassLoader.MODIFY_ALL_CLASSES},180 ignorePackagesExtractor.getPackagesToIgnore(testClass), extraTransformers);181 } else {182 mockClassloader = createNewClassloader(testClass, arrayMerger.mergeArrays(String.class, prepareForTestExtractor.getTestClasses(method),183 staticSuppressionClasses), ignorePackagesExtractor.getPackagesToIgnore(testClass), extraTransformers);184 }185 TestChunkImpl chunk = new TestChunkImpl(mockClassloader, methodsInThisChunk);186 testCaseEntry.getTestChunks().add(chunk);187 updatedIndexes();...

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Source:JavassistMockTransformerChainFactory.java Github

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1/*2 *3 * Copyright 2017 the original author or authors.4 *5 * Licensed under the Apache License, Version 2.0 (the "License");6 * you may not use this file except in compliance with the License.7 * You may obtain a copy of the License at8 *9 * http://www.apache.org/licenses/LICENSE-2.010 *11 * Unless required by applicable law or agreed to in writing, software12 * distributed under the License is distributed on an "AS IS" BASIS,13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.14 * See the License for the specific language governing permissions and15 * limitations under the License.16 *17 */18package org.powermock.core.transformers.javassist;19import org.powermock.core.transformers.MockTransformer;20import org.powermock.core.transformers.MockTransformerChain;21import org.powermock.core.transformers.MockTransformerChainFactory;22import org.powermock.core.transformers.TransformStrategy;23import org.powermock.core.transformers.support.DefaultMockTransformerChain;24import org.powermock.core.transformers.support.DefaultMockTransformerChain.MockTransformerChainBuilder;25import java.util.List;26public class JavassistMockTransformerChainFactory implements MockTransformerChainFactory {27 28 private static final TransformStrategy DEFAULT = TransformStrategy.CLASSLOADER;29 30 @Override31 public MockTransformerChain createDefaultChain() {32 return createDefaultChain(DEFAULT);33 }34 35 @Override36 public MockTransformerChain createDefaultChain(final TransformStrategy transformStrategy) {37 return createDefaultChainBuilder(transformStrategy).build();38 }39 40 @Override41 public MockTransformerChain createDefaultChain(final List<MockTransformer> extraMockTransformers) {42 return createDefaultChainBuilder(DEFAULT)43 .append(extraMockTransformers)44 .build();45 }46 47 @Override48 public MockTransformerChain createTestClassChain(final MockTransformer testClassTransformer) {49 return createDefaultChainBuilder(DEFAULT)50 .append(testClassTransformer)51 .build();52 }53 54 private MockTransformerChainBuilder createDefaultChainBuilder(final TransformStrategy transformStrategy) {55 return DefaultMockTransformerChain.newBuilder()56 .append(new ClassFinalModifierMockTransformer(transformStrategy))57 .append(new ConstructorsMockTransformer(transformStrategy))58 .append(new InstrumentMockTransformer(transformStrategy))59 .append(new PackagePrivateClassesMockTransformer(transformStrategy))60 .append(new StaticFinalFieldsMockTransformer(transformStrategy))61 .append(new StaticFinalNativeMethodMockTransformer(transformStrategy))62 .append(new SuppressStaticInitializerMockTransformer(transformStrategy))63 .append(new MethodSizeMockTransformer(transformStrategy));64 }65}...

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TestClassTransformer

Using AI Code Generation

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1import org.powermock.core.transformers.impl.TestClassTransformer;2import org.powermock.core.PowerMock;3import org.powermock.core.classloader.MockClassLoader;4import org.powermock.core.classloader.annotations.PrepareForTest;5import org.powermock.core.classloader.annotations.PowerMockIgnore;6import org.powermock.core.classloader.annotations.PowerMockListener;7import org.powermock.core.classloader.annotations.PowerMockListeners;8import org.powermock.core.classloader.annotations.PowerMockRunnerDelegate;9import org.powermock.core.classloader.annotations.PowerMockRunnerDelegateClass;10import org.powermock.core.classloader.annotations.PrepareOnlyThisForTest;11import org.powermock.core.classloader.annotations.PrepareEverythingForTest;12import org.powermock.core.classloader.annotations.PrepareForTest;13import org.powermock.core.classloader.annotations.PowerMockIgnore;14import org.powermock.core.classloader.annotations.PowerMockListener;15import org.powermock.core.classloader.annotations.PowerMockListeners;16import org.powermock.core.classloader.annotations.PowerMockRunnerDelegate;17import org.powermock.core.classloader.annotations.PowerMockRunnerDelegateClass;18import org.powermock.core.classloader.annotations.PrepareOnlyThisForTest;19import org.powermock.core.classloader.annotations.PrepareEverythingForTest;

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TestClassTransformer

Using AI Code Generation

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1package com.powermock;2import java.lang.instrument.Instrumentation;3import java.util.logging.Logger;4import org.powermock.core.transformers.impl.TestClassTransformer;5public class Agent {6 private static final Logger LOG = Logger.getLogger(Agent.class.getName());7 public static void premain(String agentArgs, Instrumentation inst) {8 LOG.info("premain called");9 inst.addTransformer(new TestClassTransformer());10 }11}12package com.powermock;13import java.lang.instrument.Instrumentation;14import java.util.logging.Logger;15import org.powermock.core.transformers.impl.TestClassTransformer;16public class Agent {17 private static final Logger LOG = Logger.getLogger(Agent.class.getName());18 public static void premain(String agentArgs, Instrumentation inst) {19 LOG.info("premain called");20 inst.addTransformer(new TestClassTransformer());21 }22}23package com.powermock;24import java.lang.instrument.Instrumentation;25import java.util.logging.Logger;26import org.powermock.core.transformers.impl.TestClassTransformer;27public class Agent {28 private static final Logger LOG = Logger.getLogger(Agent.class.getName());29 public static void premain(String agentArgs, Instrumentation inst) {30 LOG.info("premain called");31 inst.addTransformer(new TestClassTransformer());32 }33}34package com.powermock;35import java.lang.instrument.Instrumentation;36import java.util.logging.Logger;37import org.powermock.core.transformers.impl.TestClassTransformer;38public class Agent {39 private static final Logger LOG = Logger.getLogger(Agent.class.getName());40 public static void premain(String agentArgs, Instrumentation inst) {41 LOG.info("premain called");42 inst.addTransformer(new TestClassTransformer());43 }44}45package com.powermock;46import java.lang.instrument.Instrumentation;47import java.util.logging.Logger;48import org.powermock.core.transformers.impl.TestClassTransformer;49public class Agent {50 private static final Logger LOG = Logger.getLogger(Agent.class.getName());51 public static void premain(String agentArgs, Instrumentation inst) {

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TestClassTransformer

Using AI Code Generation

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1public class TestClassTransformerTest {2 public void testClassTransformer() throws Exception {3 ClassLoader classLoader = getClass().getClassLoader();4 Class<?> clazz = classLoader.loadClass("com.example.TestClass");5 Class<?> transformedClass = TestClassTransformer.transform(clazz);6 Constructor<?> constructor = transformedClass.getConstructor();7 Object object = constructor.newInstance();8 Method method = transformedClass.getMethod("testMethod");9 method.invoke(object);10 }11}12public class TestClassTransformerTest {13 public void testClassTransformer() throws Exception {14 ClassLoader classLoader = getClass().getClassLoader();15 Class<?> clazz = classLoader.loadClass("com.example.TestClass");16 Class<?> transformedClass = TestClassTransformer.transform(clazz);17 Constructor<?> constructor = transformedClass.getConstructor();18 Object object = constructor.newInstance();19 Method method = transformedClass.getMethod("testMethod");20 method.invoke(object);21 }22}23public class TestClassTransformerTest {24 public void testClassTransformer() throws Exception {25 ClassLoader classLoader = getClass().getClassLoader();26 Class<?> clazz = classLoader.loadClass("com.example.TestClass");27 Class<?> transformedClass = TestClassTransformer.transform(clazz);28 Constructor<?> constructor = transformedClass.getConstructor();29 Object object = constructor.newInstance();30 Method method = transformedClass.getMethod("testMethod");31 method.invoke(object);32 }33}34public class TestClassTransformerTest {35 public void testClassTransformer() throws Exception {36 ClassLoader classLoader = getClass().getClassLoader();37 Class<?> clazz = classLoader.loadClass("com.example.TestClass");38 Class<?> transformedClass = TestClassTransformer.transform(clazz);39 Constructor<?> constructor = transformedClass.getConstructor();40 Object object = constructor.newInstance();41 Method method = transformedClass.getMethod("testMethod");42 method.invoke(object);

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TestClassTransformer

Using AI Code Generation

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1import org.powermock.core.transformers.impl.*;2import org.powermock.core.transformers.*;3import java.io.*;4public class 4 {5 public static void main(String[] args) throws Exception {6 TestClassTransformer transformer = new TestClassTransformer();7 byte[] transformed = transformer.transform(null, null, null, null, null);8 FileOutputStream fos = new FileOutputStream("TestClass.class");9 fos.write(transformed);10 fos.close();11 }12}

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TestClassTransformer

Using AI Code Generation

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1TestClassTransformer transformer = new TestClassTransformer();2Thread.currentThread().setContextClassLoader(transformer);3transformer.transform(null, new TestClassTransformer.ClassLoaderConfiguration(4 new String[] { "org.powermock.core.transformers.test.MockedClass" }, null));5ClassLoader classLoader = Thread.currentThread().getContextClassLoader();6URL[] urls = ((URLClassLoader) classLoader).getURLs();7for (URL url : urls) {8 System.out.println(url.getFile());9}10transformer.restore();11classLoader = Thread.currentThread().getContextClassLoader();12urls = ((URLClassLoader) classLoader).getURLs();13for (URL url : urls) {14 System.out.println(url.getFile());15}

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TestClassTransformer

Using AI Code Generation

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1public class TestClassTransformerTest {2 private static final String TEST_CLASS_NAME = "com.example.MyClass";3 private static final String TEST_CLASS_FILE_NAME = TEST_CLASS_NAME.replace('.',4'/') + ".class";5 private static final String TEST_CLASS_FILE = "target/classes/" + TEST_CLASS_FILE_NAME;6 public void testTransform() throws Exception {7 ClassLoader classLoader = TestClassTransformerTest.class.getClassLoader();8 ClassReader cr = new ClassReader(classLoader.getResourceAsStream(TEST_CLASS_FILE_NAME));9 ClassWriter cw = new ClassWriter(cr, ClassWriter.COMPUTE_MAXS);10 TestClassTransformer transformer = new TestClassTransformer();11 cr.accept(transformer, ClassReader.EXPAND_FRAMES);12 transformer.transform(classLoader, TEST_CLASS_NAME, null, null, cw.toByteArray());13 }14}15public class MyClass {16 public static void main(String[] args) {17 System.out.println("Hello World");18 }19}20public class TestClassTransformerTest {21 private static final String TEST_CLASS_NAME = "com.example.MyClass";22 private static final String TEST_CLASS_FILE_NAME = TEST_CLASS_NAME.replace('.',23'/') + ".class";24 private static final String TEST_CLASS_FILE = "target/classes/" + TEST_CLASS_FILE_NAME;25 public void testTransform() throws Exception {26 ClassLoader classLoader = TestClassTransformerTest.class.getClassLoader();27 ClassReader cr = new ClassReader(classLoader.getResourceAsStream(TEST_CLASS_FILE_NAME));28 ClassWriter cw = new ClassWriter(cr, ClassWriter.COMPUTE_MAXS);29 TestClassTransformer transformer = new TestClassTransformer();30 cr.accept(transformer, ClassReader.EXPAND_FRAMES);31 transformer.transform(classLoader, TEST_CLASS_NAME, null, null, cw.toByteArray());32 }33}34public class MyClass {35 public static void main(String[] args) {36 System.out.println("Hello World");37 }38}

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