How to use Interface IThreadWorkerFactory class of org.testng.thread package

Best Testng code snippet using org.testng.thread.Interface IThreadWorkerFactory

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1package org.testng.thread;2import java.util.Comparator;3import java.util.concurrent.BlockingQueue;4import java.util.concurrent.TimeUnit;5import org.testng.IDynamicGraph;6import org.testng.ISuite;7import org.testng.ITestNGMethod;8/​**9 * Represents the capabilities to be possessed by any implementation that can be plugged into TestNG10 * to execute nodes from a {@link org.testng.IDynamicGraph} object.11 */​12public interface IExecutorFactory {13 /​**14 * @param name - The name to be used as a prefix for all created threads.15 * @param graph - A {@link org.testng.IDynamicGraph} object that represents the graph of methods and the16 * hierarchy of execution.17 * @param factory - A {@link IThreadWorkerFactory} factory to create threads.18 * @param corePoolSize the number of threads to keep in the pool, even if they are idle, unless19 * {@code allowCoreThreadTimeOut} is set20 * @param maximumPoolSize the maximum number of threads to allow in the pool21 * @param keepAliveTime when the number of threads is greater than the core, this is the maximum22 * time that excess idle threads will wait for new tasks before terminating.23 * @param unit the time unit for the {@code keepAliveTime} argument24 * @param workQueue the queue to use for holding tasks before they are executed. This queue will25 * hold only the {@code Runnable} tasks submitted by the {@code execute} method.26 * @param comparator - A {@link Comparator} to order nodes internally.27 * @return - A new {@link ITestNGThreadPoolExecutor} that is capable of running suites in28 * parallel.29 */​30 ITestNGThreadPoolExecutor newSuiteExecutor(String name,31 IDynamicGraph<ISuite> graph,32 IThreadWorkerFactory<ISuite> factory,33 int corePoolSize,34 int maximumPoolSize,35 long keepAliveTime,36 TimeUnit unit,37 BlockingQueue<Runnable> workQueue,38 Comparator<ISuite> comparator);39 /​**40 * @param name - The name to be used as a prefix for all created threads.41 * @param graph - A {@link IDynamicGraph} object that represents the graph of methods and the42 * hierarchy of execution.43 * @param factory - A {@link IThreadWorkerFactory} factory to create threads.44 * @param corePoolSize the number of threads to keep in the pool, even if they are idle, unless45 * {@code allowCoreThreadTimeOut} is set46 * @param maximumPoolSize the maximum number of threads to allow in the pool47 * @param keepAliveTime when the number of threads is greater than the core, this is the maximum48 * time that excess idle threads will wait for new tasks before terminating.49 * @param unit the time unit for the {@code keepAliveTime} argument50 * @param workQueue the queue to use for holding tasks before they are executed. This queue will51 * hold only the {@code Runnable} tasks submitted by the {@code execute} method.52 * @param comparator - A {@link Comparator} to order nodes internally.53 * @return - A new {@link ITestNGThreadPoolExecutor} that is capable of running test methods in54 * parallel.55 */​56 ITestNGThreadPoolExecutor newTestMethodExecutor(57 String name,58 IDynamicGraph<ITestNGMethod> graph,59 IThreadWorkerFactory<ITestNGMethod> factory,60 int corePoolSize,61 int maximumPoolSize,62 long keepAliveTime,63 TimeUnit unit,64 BlockingQueue<Runnable> workQueue,65 Comparator<ITestNGMethod> comparator66 );67}...

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1package org.testng.thread;2import java.util.List;3/​**4 * A factory that creates workers used by {@code GraphThreadPoolExecutor}5 */​6public interface IThreadWorkerFactory<T> {7 /​**8 * Creates {@code IWorker} for specified set of tasks. It is not necessary that number of workers9 * returned be same as number of tasks entered.10 *11 * @param freeNodes tasks that need to be executed12 * @return list of workers13 */​14 List<IWorker<T>> createWorkers(List<T> freeNodes);15}...

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Interface IThreadWorkerFactory

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1package org.testng.thread;2import org.testng.IThreadWorkerFactory;3public class ThreadWorkerFactory implements IThreadWorkerFactory {4 public IThreadWorker newThreadWorker() {5 return new ThreadWorker();6 }7}8package org.testng.thread;9import org.testng.ITestResult;10public class ThreadWorker implements IThreadWorker {11 public void run() {12 System.out.println("ThreadWorker.run");13 }14 public void addTestResult(ITestResult tr) {15 System.out.println("ThreadWorker.addTestResult");16 }17 public void start() {18 System.out.println("ThreadWorker.start");19 }20 public void stop() {21 System.out.println("ThreadWorker.stop");22 }23}24package org.testng.thread;25import org.testng.ITestResult;26public class ThreadWorkerListener implements IThreadWorkerListener {27 public void onStart(IThreadWorker threadWorker) {28 System.out.println("ThreadWorkerListener.onStart");29 }30 public void onTestResult(ITestResult tr) {31 System.out.println("ThreadWorkerListener.onTestResult");32 }33 public void onStop(IThreadWorker threadWorker) {34 System.out.println("ThreadWorkerListener.onStop");35 }36}37package org.testng.thread;38public class ThreadWorkerManager implements IThreadWorkerManager {39 public void add(IThreadWorker threadWorker) {40 System.out.println("ThreadWorkerManager.add");41 }42 public void start() {43 System.out.println("ThreadWorkerManager.start");44 }45 public void stop() {46 System.out.println("ThreadWorkerManager.stop");47 }48}49package org.testng.thread;50import org.testng.IThreadWorkerManagerFactory;51public class ThreadWorkerManagerFactory implements IThreadWorkerManagerFactory {52 public IThreadWorkerManager newThreadWorkerManager() {53 return new ThreadWorkerManager();54 }55}56package org.testng.thread;57import org.testng.ITestContext;58import org.testng.ITestNGMethod;59import org.testng.ITestResult;60import org.testng.internal.ConstructorOrMethod;61import org.testng.xml.XmlTest;62import java.util.List;

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Interface IThreadWorkerFactory

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1public class ThreadWorkerFactory implements IThreadWorkerFactory {2 public IThreadWorker createThreadWorker(IThreadWorkerListener threadWorkerListener) {3 return new ThreadWorker(threadWorkerListener);4 }5}6public class ThreadWorkerListener implements IThreadWorkerListener {7 public void onWorkerThreadStart(Thread thread) {8 System.out.println("thread started");9 }10 public void onWorkerThreadFinish(Thread thread) {11 System.out.println("thread finished");12 }13}14public class ThreadWorker implements IThreadWorker {15 private IThreadWorkerListener listener;16 public ThreadWorker(IThreadWorkerListener listener) {17 this.listener = listener;18 }19 public void execute() {20 listener.onWorkerThreadStart(Thread.currentThread());21 System.out.println("thread executing");22 listener.onWorkerThreadFinish(Thread.currentThread());23 }24}25public class ThreadWorkerManager implements IThreadWorkerManager {26 private IThreadWorkerFactory factory;27 private IThreadWorkerListener listener;28 private List<IThreadWorker> workers;29 public ThreadWorkerManager(IThreadWorkerFactory factory, IThreadWorkerListener listener) {30 this.factory = factory;31 this.listener = listener;32 this.workers = new ArrayList<>();33 }34 public void startWorkers(int count) {35 for (int i = 0; i < count; i++) {36 IThreadWorker worker = factory.createThreadWorker(listener);37 workers.add(worker);38 Thread thread = new Thread(() -> worker.execute());39 thread.start();40 }41 }42 public void stopWorkers() {43 for (IThreadWorker worker : workers) {44 worker.stop();45 }46 }47}48public class ThreadWorkerTest {49 public void testThreadWorker() {50 IThreadWorkerFactory factory = new ThreadWorkerFactory();51 IThreadWorkerListener listener = new ThreadWorkerListener();52 IThreadWorkerManager manager = new ThreadWorkerManager(factory, listener);53 manager.startWorkers(5);54 manager.stopWorkers();55 }56}57public class ThreadWorkerTest {

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Interface IThreadWorkerFactory

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1public class MyTestFactory implements IThreadWorkerFactory {2 public IThreadWorker createWorker() {3 return new MyThreadWorker();4 }5}6public class MyThreadWorker implements IThreadWorker {7 public void run(Object[] params) {8 }9}10public class MyTestFactory implements IThreadWorkerFactory {11 public IThreadWorker createWorker() {12 return new MyThreadWorker();13 }14}15public class MyThreadWorker implements IThreadWorker {16 public void run(Object[] params) {17 }18}19public class MyTestFactory implements IThreadWorkerFactory {20 public IThreadWorker createWorker() {21 return new MyThreadWorker();22 }23}24public class MyThreadWorker implements IThreadWorker {25 public void run(Object[] params) {26 }27}28public class MyTestFactory implements IThreadWorkerFactory {29 public IThreadWorker createWorker() {30 return new MyThreadWorker();31 }32}33public class MyThreadWorker implements IThreadWorker {34 public void run(Object[] params) {35 }36}37public class MyTestFactory implements IThreadWorkerFactory {38 public IThreadWorker createWorker() {39 return new MyThreadWorker();40 }41}42public class MyThreadWorker implements IThreadWorker {43 public void run(Object[] params) {44 }45}46public class MyTestFactory implements IThreadWorkerFactory {47 public IThreadWorker createWorker() {48 return new MyThreadWorker();49 }50}51public class MyThreadWorker implements IThreadWorker {52 public void run(Object[] params) {53 }54}55public class MyTestFactory implements IThreadWorkerFactory {

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Interface IThreadWorkerFactory

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1IThreadWorkerFactory factory = new IThreadWorkerFactory() {2 public IThreadWorker createThreadWorker() {3 return new IThreadWorker() {4 public void add(Runnable runnable) {5 }6 public void finish() {7 }8 };9 }10};11testng.setThreadWorkerFactory(factory);12IThreadWorker worker = new IThreadWorker() {13 public void add(Runnable runnable) {14 }15 public void finish() {16 }17};18testng.setThreadWorker(worker);19IThreadWorkerListener listener = new IThreadWorkerListener() {20 public void onWorkerStart(IThreadWorker worker) {21 }22 public void onWorkerFinish(IThreadWorker worker) {23 }24};25testng.setThreadWorkerListener(listener);26IThreadWorkerFactory factory = new IThreadWorkerFactory() {27 public IThreadWorker createThreadWorker() {28 return new IThreadWorker() {29 public void add(Runnable runnable) {30 }31 public void finish() {32 }33 };34 }35};36testng.setThreadWorkerFactory(factory);37IThreadWorker worker = new IThreadWorker() {38 public void add(Runnable runnable) {39 }40 public void finish() {41 }42};43testng.setThreadWorker(worker);

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classesToRun is a list of XmlClass, It can't be cast to a single XmlClass. You need to iterate over the list

for (XmlClass xmlClass : classesToRun) {
    xmlClass.setIncludedMethods(methodsToRun);
}
https://stackoverflow.com/questions/55948610/java-util-arraylist-cannot-be-cast-to-org-testng-xml-xmlclass-this-error-is-th

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