How to use CrossClassLoaderSerializationProxy method of org.mockito.internal.creation.bytebuddy.MockMethodInterceptor class

Best Mockito code snippet using org.mockito.internal.creation.bytebuddy.MockMethodInterceptor.CrossClassLoaderSerializationProxy

Source:ByteBuddyCrossClassLoaderSerializationSupport.java Github

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...79 * {@link CrossClassLoaderSerializableMock}.</p>80 * </li>81 * <li>82 * <p>Now, in the constructor83 * {@link CrossClassLoaderSerializationProxy#CrossClassLoaderSerializationProxy(java.lang.Object)}84 * the mock is being serialized in a custom way (using {@link MockitoMockObjectOutputStream}) to a85 * byte array. So basically it means the code is performing double nested serialization of the passed86 * <code>mockitoMock</code>.</p>87 *88 * <p>However the <code>ObjectOutputStream</code> will still detect the custom89 * <code>writeReplace</code> and execute it.90 * <em>(For that matter disabling replacement via {@link ObjectOutputStream#enableReplaceObject(boolean)}91 * doesn't disable the <code>writeReplace</code> call, but just just toggle replacement in the92 * written stream, <strong><code>writeReplace</code> is always called by93 * <code>ObjectOutputStream</code></strong>.)</em></p>94 *95 * <p>In order to avoid this recursion, obviously leading to a {@link StackOverflowError}, this method is using96 * a flag that marks the mock as already being replaced, and then shouldn't replace itself again.97 * <strong>This flag is local to this class</strong>, which means the flag of this class unfortunately needs98 * to be protected against concurrent access, hence the reentrant lock.</p>99 * </li>100 * </ol>101 *102 * @param mockitoMock The Mockito mock to be serialized.103 * @return A wrapper ({@link CrossClassLoaderSerializationProxy}) to be serialized by the calling ObjectOutputStream.104 * @throws java.io.ObjectStreamException105 */106 public Object writeReplace(Object mockitoMock) throws ObjectStreamException {107 // reentrant lock for critical section. could it be improved ?108 mutex.lock();109 try {110 // mark started flag // per thread, not per instance111 // temporary loosy hack to avoid stackoverflow112 if (mockIsCurrentlyBeingReplaced()) {113 return mockitoMock;114 }115 mockReplacementStarted();116 return new CrossClassLoaderSerializationProxy(mockitoMock);117 } catch (IOException ioe) {118 MockUtil mockUtil = new MockUtil();119 MockName mockName = mockUtil.getMockName(mockitoMock);120 String mockedType = mockUtil.getMockSettings(mockitoMock).getTypeToMock().getCanonicalName();121 throw new MockitoSerializationIssue(join(122 "The mock '" + mockName + "' of type '" + mockedType + "'",123 "The Java Standard Serialization reported an '" + ioe.getClass().getSimpleName() + "' saying :",124 " " + ioe.getMessage()125 ), ioe);126 } finally {127 // unmark128 mockReplacementCompleted();129 mutex.unlock();130 }131 }132 private void mockReplacementCompleted() {133 instanceLocalCurrentlySerializingFlag = false;134 }135 private void mockReplacementStarted() {136 instanceLocalCurrentlySerializingFlag = true;137 }138 private boolean mockIsCurrentlyBeingReplaced() {139 return instanceLocalCurrentlySerializingFlag;140 }141 /**142 * This is the serialization proxy that will encapsulate the real mock data as a byte array.143 * <p/>144 * <p>When called in the constructor it will serialize the mock in a byte array using a145 * custom {@link MockitoMockObjectOutputStream} that will annotate the mock class in the stream.146 * Other information are used in this class in order to facilitate deserialization.147 * </p>148 * <p/>149 * <p>Deserialization of the mock will be performed by the {@link #readResolve()} method via150 * the custom {@link MockitoMockObjectInputStream} that will be in charge of creating the mock class.</p>151 */152 public static class CrossClassLoaderSerializationProxy implements Serializable {153 private static final long serialVersionUID = -7600267929109286514L;154 private final byte[] serializedMock;155 private final Class typeToMock;156 private final Set<Class> extraInterfaces;157 /**158 * Creates the wrapper that be used in the serialization stream.159 *160 * <p>Immediately serializes the Mockito mock using specifically crafted {@link MockitoMockObjectOutputStream},161 * in a byte array.</p>162 *163 * @param mockitoMock The Mockito mock to serialize.164 * @throws java.io.IOException165 */166 public CrossClassLoaderSerializationProxy(Object mockitoMock) throws IOException {167 ByteArrayOutputStream out = new ByteArrayOutputStream();168 ObjectOutputStream objectOutputStream = new MockitoMockObjectOutputStream(out);169 objectOutputStream.writeObject(mockitoMock);170 objectOutputStream.close();171 out.close();172 MockCreationSettings mockSettings = new MockUtil().getMockSettings(mockitoMock);173 this.serializedMock = out.toByteArray();174 this.typeToMock = mockSettings.getTypeToMock();175 this.extraInterfaces = mockSettings.getExtraInterfaces();176 }177 /**178 * Resolves the proxy to a new deserialized instance of the Mockito mock.179 * <p/>180 * <p>Uses the custom crafted {@link MockitoMockObjectInputStream} to deserialize the mock.</p>...

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CrossClassLoaderSerializationProxy

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1import net.bytebuddy.ByteBuddy;2import net.bytebuddy.dynamic.loading.ClassLoadingStrategy;3import net.bytebuddy.implementation.FixedValue;4import net.bytebuddy.implementation.MethodDelegation;5import net.bytebuddy.matcher.ElementMatchers;6import org.mockito.internal.creation.bytebuddy.MockMethodInterceptor;7import org.mockito.invocation.MockHandler;8import org.mockito.mock.MockCreationSettings;9import java.io.Serializable;10import java.lang.reflect.Constructor;11import java.lang.reflect.InvocationTargetException;12import java.lang.reflect.Method;13public class ByteBuddyMockito {14 public static <T> T mock(Class<T> type, ClassLoader classLoader) {15 return (T) new ByteBuddy()16 .subclass(type)17 .method(ElementMatchers.isDeclaredBy(type))18 .intercept(MethodDelegation.to(MockMethodInterceptor.class))19 .make()20 .load(classLoader, ClassLoadingStrategy.Default.WRAPPER)21 .getLoaded()22 .getConstructors()[0]23 .newInstance(new MockMethodInterceptor(getMockHandler(type, classLoader)));24 }25 private static MockHandler getMockHandler(Class<?> type, ClassLoader classLoader) {26 try {27 Class<?> mockCreationSettings = classLoader.loadClass(MockCreationSettings.class.getName());28 Class<?> mockHandler = classLoader.loadClass(MockHandler.class.getName());29 Method of = mockCreationSettings.getMethod("of", Class.class);30 Constructor<?> constructor = mockHandler.getConstructor(mockCreationSettings);31 return (MockHandler) constructor.newInstance(of.invoke(null, type));32 } catch (ClassNotFoundException | NoSuchMethodException | IllegalAccessException | InvocationTargetException | InstantiationException e) {33 throw new RuntimeException(e);34 }35 }36}37Mockito.mock(MyClass.class, new CrossClassLoaderSerializationProxy(MyClass.class.getClassLoader()).createProxy());

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CrossClassLoaderSerializationProxy

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1import com.sun.jdi.*;2import com.sun.jdi.connect.*;3import java.util.*;4import java.util.concurrent.*;5import java.util.concurrent.atomic.*;6import java.util.concurrent.locks.*;7import java.util.function.*;8import java.util.stream.*;9import java.util.stream.Collectors.*;10import java.util.stream.IntStream.*;11import java.util.stream.Stream.*;12import java.util.stream.StreamSupport.*;13import java.util.stream.DoubleStream.*;14import java.util.stream.LongStream.*;15import java.util.stream.IntStream.*;16import java.util.stream.LongStream.*;17import java.util.stream.DoubleStream.*;18import java.util.stream.StreamSupport.*;19import java.util.stream.Collectors.*;20import java.util.stream.Stream.*;21import java.util.stream.IntStream.*;22import java.util.stream.DoubleStream.*;23import java.util.stream.LongStream.*;24import java.util.stream.StreamSupport.*;25import java.util.stream.Collectors.*;26import java.util.stream.Stream.*;27import java.util.stream.IntStream.*;28import java.util.stream.DoubleStream.*;29import java.util.stream.LongStream.*;30import java.util.stream.StreamSupport.*;31import java.util.stream.Collectors.*;32import java.util.stream.Stream.*;33import java.util.stream.IntStream.*;34import java.util.stream.DoubleStream.*;35import java.util.stream.LongStream.*;36import java.util.stream.StreamSupport.*;37import java.util.stream.Collectors.*;38import java.util.stream.Stream.*;39import java.util.stream.IntStream.*;40import java.util.stream.DoubleStream.*;41import java.util.stream.LongStream.*;42import java.util.stream.StreamSupport.*;43import java.util.stream.Collectors.*;44import java.util.stream.Stream.*;45import java.util.stream.IntStream.*;46import java.util.stream.DoubleStream.*;47import java.util.stream.LongStream.*;48import java.util.stream.StreamSupport.*;49import java.util.stream.Collectors.*;50import java.util.stream.Stream.*;51import java.util.stream.IntStream.*;52import java.util.stream.DoubleStream.*;53import java.util.stream.LongStream.*;54import java.util.stream.StreamSupport.*;55import java.util.stream.Collectors.*;56import java.util.stream.Stream.*;57import java.util.stream.IntStream.*;58import java.util.stream.DoubleStream.*;59import java.util.stream.LongStream.*;60import java.util.stream.StreamSupport.*;61import java.util.stream.Collectors.*;62import java.util.stream.Stream.*;63import java.util.stream.IntStream.*;64import java.util.stream.DoubleStream.*;65import java.util.stream.LongStream.*;66import java.util.stream.StreamSupport.*;67import java.util.stream.Collectors.*;68import java.util.stream.Stream.*;69import java.util.stream.IntStream.*;70import java.util.stream.DoubleStream.*;71import java.util.stream.LongStream.*;72import java.util.stream.StreamSupport.*;73import java.util.stream.Collectors.*;74import java.util.stream.Stream.*;75import java.util.stream.IntStream

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