@Test

    public void shouldStartTomcat() throws Exception {

        try(WeldContainer weldContainer = new Weld().disableDiscovery()

                .beanClasses(DefaultServlet.class).initialize()) {

            String baseDir = "target/webapp-runner";

            Tomcat tomcat = new Tomcat();

            int port = 8080;

            tomcat.setPort(port);

            File base = new File(baseDir);

            if (!base.exists())

            {

                base.mkdirs();

            }

            tomcat.setBaseDir(baseDir);

            Context ctx = tomcat.addContext("/",base.getAbsolutePath());

            StandardContext standardContext = (StandardContext)ctx;

            standardContext.addApplicationListener(Listener.class.getName());

            Wrapper wrapper = Tomcat.addServlet(ctx,"RequestServlet",DefaultServlet.class.getName());

            wrapper.addMapping("/*");

            tomcat.start();

            try(InputStream stream = new URL("http://localhost:8080/").openStream()) {

                String data = IOUtils.toString(stream).trim();

                assertThat(data).isEqualTo(MessageProvider.DATA);

            }

            try(InputStream stream = new URL("http://localhost:8080/").openStream()) {

                String data = IOUtils.toString(stream).trim();

                assertThat(data).isEqualTo(MessageProvider.DATA);

            }

        }

    }

SEVERE: Failed to initialize end point associated with ProtocolHandler ["http-nio-8080"]

java.net.BindException: Address already in use

	at sun.nio.ch.Net.bind0(Native Method)

	at sun.nio.ch.Net.bind(Net.java:433)

	at sun.nio.ch.Net.bind(Net.java:425)

	at sun.nio.ch.ServerSocketChannelImpl.bind(ServerSocketChannelImpl.java:223)

	at sun.nio.ch.ServerSocketAdaptor.bind(ServerSocketAdaptor.java:74)

	at org.apache.tomcat.util.net.NioEndpoint.bind(NioEndpoint.java:340)

	at org.apache.tomcat.util.net.AbstractEndpoint.init(AbstractEndpoint.java:742)

	at org.apache.coyote.AbstractProtocol.init(AbstractProtocol.java:458)

	at org.apache.coyote.http11.AbstractHttp11JsseProtocol.init(AbstractHttp11JsseProtocol.java:120)

	at org.apache.catalina.connector.Connector.initInternal(Connector.java:960)

	at org.apache.catalina.util.LifecycleBase.init(LifecycleBase.java:102)

	at org.apache.catalina.core.StandardService.initInternal(StandardService.java:568)

	at org.apache.catalina.util.LifecycleBase.init(LifecycleBase.java:102)

	at org.apache.catalina.core.StandardServer.initInternal(StandardServer.java:851)

	at org.apache.catalina.util.LifecycleBase.init(LifecycleBase.java:102)

	at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:139)

	at org.apache.catalina.startup.Tomcat.start(Tomcat.java:344)

	at ws.ament.hammock.web.tomcat.TomcatWebServer.start(TomcatWebServer.java:73)

	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)

	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

	at java.lang.reflect.Method.invoke(Method.java:498)

	at org.jboss.weld.bean.proxy.AbstractBeanInstance.invoke(AbstractBeanInstance.java:38)

	at org.jboss.weld.bean.proxy.ProxyMethodHandler.invoke(ProxyMethodHandler.java:100)

	at ws.ament.hammock.web.spi.WebServer$874618097$Proxy$_$$_WeldClientProxy.start(Unknown Source)

	at ws.ament.hammock.web.spi.StartWebServer.init(StartWebServer.java:53)

	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)

	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

	at java.lang.reflect.Method.invoke(Method.java:498)

	at org.jboss.weld.injection.StaticMethodInjectionPoint.invoke(StaticMethodInjectionPoint.java:88)

	at org.jboss.weld.injection.MethodInvocationStrategy$SpecialParamPlusBeanManagerStrategy.invoke(MethodInvocationStrategy.java:144)

	at org.jboss.weld.event.ObserverMethodImpl.sendEvent(ObserverMethodImpl.java:313)

	at org.jboss.weld.event.ExtensionObserverMethodImpl.sendEvent(ExtensionObserverMethodImpl.java:125)

	at org.jboss.weld.event.ObserverMethodImpl.sendEvent(ObserverMethodImpl.java:291)

	at org.jboss.weld.event.ObserverMethodImpl.notify(ObserverMethodImpl.java:269)

	at org.jboss.weld.event.ObserverNotifier.notifySyncObservers(ObserverNotifier.java:302)

	at org.jboss.weld.event.ObserverNotifier.notify(ObserverNotifier.java:291)

	at org.jboss.weld.event.ObserverNotifier.fireEvent(ObserverNotifier.java:160)

	at org.jboss.weld.event.ObserverNotifier.fireEvent(ObserverNotifier.java:154)

	at org.jboss.weld.bootstrap.events.AbstractContainerEvent.fire(AbstractContainerEvent.java:53)

	at org.jboss.weld.bootstrap.events.AbstractDeploymentContainerEvent.fire(AbstractDeploymentContainerEvent.java:35)

	at org.jboss.weld.bootstrap.events.AfterDeploymentValidationImpl.fire(AfterDeploymentValidationImpl.java:28)

	at org.jboss.weld.bootstrap.WeldStartup.validateBeans(WeldStartup.java:449)

	at org.jboss.weld.bootstrap.WeldBootstrap.validateBeans(WeldBootstrap.java:90)

	at org.jboss.weld.environment.servlet.WeldServletLifecycle.initialize(WeldServletLifecycle.java:238)

	at org.jboss.weld.environment.servlet.Listener.contextInitialized(Listener.java:121)

	at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4812)

	at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5255)

	at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)

	at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1408)

	at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1398)

	at java.util.concurrent.FutureTask.run(FutureTask.java:266)

	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)

	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)

	at java.lang.Thread.run(Thread.java:745)