<groupId>org.wamblee</groupId>
<artifactId>wamblee-support-general</artifactId>
<version>0.2.5-SNAPSHOT</version>
- <scope>test</scope>
</dependency>
<dependency>
<groupId>javax.transaction</groupId>
+++ /dev/null
-/*
- * Copyright 2005-2010 the original author or authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-package org.wamblee.test.transactions;
-
-import java.lang.reflect.InvocationHandler;
-import java.lang.reflect.InvocationTargetException;
-import java.lang.reflect.Method;
-import java.lang.reflect.Proxy;
-
-/**
- * Thread-specific proxy is used to create implementations of interfaces that
- * delegate to a thread-specific implementation of the service.
- *
- * It is used for instance to pass a transaction scoped entity manager around.
- *
- * The {@link #set(Object)} method sets the current service instance for the current thread.
- * The {@link #get()} method gets the current service instance for the current thread.
- * The {@link #getProxy()} method gets a proxy that will delegate at runtime to the thread-specific
- * instance. The result from this method can be passed at construction of an object that will be used
- * by multiple threads.
- *
- * This class is mostly used by other test tools.
- *
- * @param T
- * Interface to proxy.
- * @author Erik Brakkee
- *
- */
-public class ThreadSpecificProxyFactory<T> {
- private class ThreadSpecificInvocationHandler implements InvocationHandler {
-
- @Override
- public Object invoke(Object aProxy, Method aMethod, Object[] aArgs)
- throws Throwable {
- try {
- return aMethod.invoke(svc.get(), aArgs);
- } catch (InvocationTargetException e) {
- throw e.getCause();
- }
- }
- }
-
- private ThreadLocal<T> svc = new ThreadLocal<T>();
- private Class clazz;
-
- /**
- * Constructs the factory.
- *
- * @param aClass
- * Interface class of the service to proxy.
- */
- public ThreadSpecificProxyFactory(Class<T> aClass) {
- if (!aClass.isInterface()) {
- throw new IllegalArgumentException("Class " + aClass.getName() +
- " is not an interface");
- }
- clazz = aClass;
- }
-
- /**
- * Sets the thread-specific service.
- *
- * @param aService
- * Service, use null value to reset.
- */
- public void set(T aService) {
- svc.set(aService);
- }
-
- /**
- * Gets the current thread-specific service.
- * @return Service.
- */
- public T get() {
- return svc.get();
- }
-
- /**
- * Gets the proxy that delegates to the thread-specific instance set by
- * {@link #set(Object)}
- *
- * @return Proxy.
- */
- public T getProxy() {
- InvocationHandler handler = new ThreadSpecificInvocationHandler();
- Class proxyClass = Proxy.getProxyClass(clazz.getClassLoader(),
- new Class[] { clazz });
- T proxy;
- try {
- proxy = (T) proxyClass.getConstructor(
- new Class[] { InvocationHandler.class }).newInstance(
- new Object[] { handler });
- return proxy;
- } catch (Exception e) {
- throw new RuntimeException("Could not create proxy for " +
- clazz.getName(), e);
- }
- }
-}
import javax.persistence.EntityManager;
+import org.wamblee.general.ThreadSpecificProxyFactory;
import org.wamblee.test.persistence.JpaBuilder;
import org.wamblee.test.persistence.JpaBuilder.JpaUnitOfWork;
+++ /dev/null
-/*
- * Copyright 2005-2010 the original author or authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-package org.wamblee.test.transactions;
-
-import static junit.framework.Assert.*;
-import static org.mockito.Matchers.*;
-import static org.mockito.Mockito.*;
-
-import org.junit.After;
-import org.junit.Before;
-import org.junit.Test;
-import org.wamblee.test.transactions.ThreadSpecificProxyFactory;
-
-public class ThreadSpecificProxyFactoryTest {
-
- private static interface Service {
- int execute(int aX) throws Exception;
- }
-
- private ThreadSpecificProxyFactory<Service> factory;
- private Service proxy;
-
- @Before
- public void setUp() {
- factory = new ThreadSpecificProxyFactory<Service>(Service.class);
- proxy = factory.getProxy();
- }
-
- @After
- public void tearDown() {
- // Empty.
- }
-
- @Test(expected = NullPointerException.class)
- public void testNoSvcDefined() throws Exception {
- proxy.execute(10);
- }
-
- @Test
- public void testInvokeThroughProxy() throws Exception {
- Service svc = mock(Service.class);
- when(svc.execute(anyInt())).thenReturn(50);
- factory.set(svc);
- assertEquals(50, proxy.execute(10));
- verify(svc).execute(10);
- }
-
- @Test
- public void testInvokeThroughProxyWithException() throws Exception {
- Service svc = mock(Service.class);
- try {
- when(svc.execute(anyInt())).thenThrow(
- new RuntimeException("exception thrown"));
- factory.set(svc);
- svc.execute(10);
- fail();
- } catch (RuntimeException e) {
- assertEquals("exception thrown", e.getMessage());
- }
- }
-
- private int returnFromThread;
-
- @Test
- public void testVerifyThreadSpecificUsingTwoThreads() throws Exception {
- Service svc1 = mock(Service.class);
- final Service svc2 = mock(Service.class);
- when(svc1.execute(anyInt())).thenReturn(10);
- when(svc2.execute(anyInt())).thenReturn(20);
-
- factory.set(svc1);
- assertEquals(10, svc1.execute(10));
- Thread t = new Thread() {
- public void run() {
- factory.set(svc2);
- try {
- returnFromThread = proxy.execute(100);
- } catch (Exception e) {
- returnFromThread = 100000;
- }
- };
- };
- t.start();
- t.join();
- assertEquals(20, returnFromThread);
- assertEquals(10, proxy.execute(100));
-
- }
-
- @Test(expected = IllegalArgumentException.class)
- public void testNotAnInterface() {
- ThreadSpecificProxyFactory f = new ThreadSpecificProxyFactory(String.class);
- }
-}
git://wamblee.org / utils / commitdiff