[JAVA-13854] Half list moved (#12598)

* [JAVA-13854] added parent module

* [JAVA-13854] moved apache-tapestry(submodule) to web-modules(parent)

* [JAVA-13854] moved bootique(submodule) to web-modules(parent)

* [JAVA-13854] moved dropwizard(submodule) to web-modules(parent)

* [JAVA-13854] moved blade(submodule) to web-modules(parent)

* [JAVA-13854] moved java-lite(submodule) to web-modules(parent)

* [JAVA-13854] moved jooby(submodule) to web-modules(parent)

* [JAVA-13854] moved linkrest(submodule) to web-modules(parent)

* [JAVA-13854] moved ninja(submodule) to web-modules(parent)

* [JAVA-13854] moved ratpack(submodule) to web-modules(parent)

* [JAVA-13854] moved resteasy(submodule) to web-modules(parent)

* [JAVA-13854] moved restx(submodule) to web-modules(parent)

* [JAVA-13854] moved spark-java(submodule) to web-modules(parent)

* [JAVA-13854] moved vraptor(submodule) to web-modules(parent)

* [JAVA-13854] delete modules that were moved

* [JAVA-13854]

* [JAVA-13854]

* [JAVA-13854] delete ninja submodule  + moved raml(submodule) to web-modules(parent)

* [JAVA-13854] moved gwt(submodule) to web-modules(parent)

* [JAVA-13854] moved jakarta-ee(submodule) to web-modules(parent)

* [JAVA-13854] moved javax-servlets(submodule) to web-modules(parent)

* [JAVA-13854] moved javax-servlets-2(submodule) to web-modules(parent)

* [JAVA-13854] moved jee-7(submodule) to web-modules(parent)

* [JAVA-13854] moved play-framework(not a module) to web-modules

* [JAVA-13854] fix failing test

* [JAVA-13854] moved struts-2(submodule) to web-modules(parent)

* [JAVA-13854] moved wicket(submodule) to web-modules(parent)

* [JAVA-13854] deleted modules that were moved to web-modules

* JAVA-13854 Removed moved modules from the main pom.xml

Co-authored-by: panagiotiskakos <panagiotis.kakos@libra-is.com>
Co-authored-by: Dhawal Kapil <dhawalkapil@gmail.com>

web-modules/jee-7/src/test/java/com/baeldung/singleton/CarServiceIntegrationTest.java

@@ -0,0 +1,109 @@
+package com.baeldung.singleton;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertNotEquals;
+import static org.junit.Assert.assertNotNull;
+import static org.junit.Assert.assertTrue;
+
+import java.util.HashMap;
+import java.util.Map;
+import java.util.UUID;
+
+import javax.ejb.EJB;
+import javax.enterprise.context.spi.CreationalContext;
+import javax.enterprise.inject.spi.Bean;
+import javax.enterprise.inject.spi.BeanManager;
+import javax.enterprise.inject.spi.CDI;
+import javax.inject.Inject;
+
+import org.jboss.arquillian.container.test.api.Deployment;
+import org.jboss.arquillian.junit.Arquillian;
+import org.jboss.shrinkwrap.api.ShrinkWrap;
+import org.jboss.shrinkwrap.api.asset.EmptyAsset;
+import org.jboss.shrinkwrap.api.spec.JavaArchive;
+import org.junit.Before;
+import org.junit.FixMethodOrder;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.junit.runners.MethodSorters;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+@RunWith(Arquillian.class)
+@FixMethodOrder(MethodSorters.NAME_ASCENDING)
+public class CarServiceIntegrationTest {
+
+    public static final Logger LOG = LoggerFactory.getLogger(CarServiceIntegrationTest.class);
+
+    @Deployment
+    public static JavaArchive createDeployment() {
+        return ShrinkWrap.create(JavaArchive.class)
+            .addClasses(CarServiceBean.class, CarServiceSingleton.class, CarServiceEjbSingleton.class, Car.class)
+            .addAsResource("META-INF/persistence.xml")
+            .addAsManifestResource(EmptyAsset.INSTANCE, "beans.xml");
+    }
+
+    @Inject
+    private CarServiceBean carServiceBean;
+
+    @Inject
+    private CarServiceSingleton carServiceSingleton;
+
+    @EJB
+    private CarServiceEjbSingleton carServiceEjbSingleton;
+    
+    @Test
+    public void givenASingleton_whenGetBeanIsCalledTwice_thenTheSameInstanceIsReturned() {       
+        CarServiceSingleton one = getBean(CarServiceSingleton.class);
+        CarServiceSingleton two = getBean(CarServiceSingleton.class);
+        assertTrue(one == two);
+    }
+    
+    @Test
+    public void givenAPojo_whenGetBeanIsCalledTwice_thenDifferentInstancesAreReturned() {       
+        CarServiceBean one = getBean(CarServiceBean.class);
+        CarServiceBean two = getBean(CarServiceBean.class);
+        assertTrue(one != two);
+    }
+
+    @SuppressWarnings("unchecked")
+    private <T> T getBean(Class<T> beanClass) {
+        BeanManager bm = CDI.current().getBeanManager();
+        Bean<T> bean = (Bean<T>) bm.getBeans(beanClass).iterator().next();
+        CreationalContext<T> ctx = bm.createCreationalContext(bean);
+        return (T) bm.getReference(bean, beanClass, ctx);
+    }
+
+    @Test
+    public void givenCDI_whenConcurrentAccess_thenLockingIsNotProvided() {
+        for (int i = 0; i < 10; i++) {
+            new Thread(new Runnable() {
+                @Override
+                public void run() {
+                    String model = Double.toString(Math.round(Math.random() * 100));
+                    Car car = new Car("Speedster", model);
+                    int serviceQueue = carServiceSingleton.service(car);
+                    assertTrue(serviceQueue < 10);                     
+                }
+            }).start();
+        }
+        return;
+    }
+    
+    @Test
+    public void givenEJB_whenConcurrentAccess_thenLockingIsProvided() {
+        for (int i = 0; i < 10; i++) {
+            new Thread(new Runnable() {
+                @Override
+                public void run() {
+                    String model = Double.toString(Math.round(Math.random() * 100));
+                    Car car = new Car("Speedster", model);
+                    int serviceQueue = carServiceEjbSingleton.service(car);
+                    assertEquals(0, serviceQueue);
+                }
+            }).start();
+        }
+        return;
+    }
+
+}