EJB applications guided by tests Jakub Marchwicki

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Deborah Morton
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1 EJB applications guided by tests Jakub Marchwicki

2 ?

3 pain The experiment

4 pain The experiment nb of slides

5 The experiment 20 slides pain Severe health risk OK nb of slides

6 The experiment 60 slides + IDE pain Severe health risk OK nb of slides

8 It started a year ago

9 GeeCon Poznań

10 GeeCon Poznań

11 But in fact it started much earlier JBoss 4.x Taking form 7 to 20 minutes to start No CI environment

12 Delivery a feature with only a single deploy

13 The Good Embedded container Your test is you component Focused integration testing

14 INFO INFO -- Configuring Configuring Service(id=Default Service(id=Default Security Security Service, Service, type=securityservice, provider-id=default Security type=securityservice, provider-id=default Security Service) Service) INFO Configuring Service(id=Default Transaction Manager, INFO - Configuring Service(id=Default Transaction Manager, type=transactionmanager, type=transactionmanager, provider-id=default provider-id=default Transaction Transaction Manager) Manager) INFO Creating TransactionManager(id=Default Transaction INFO - Creating TransactionManager(id=Default Transaction Manager) Manager) INFO INFO -- Creating Creating SecurityService(id=Default SecurityService(id=Default Security Security Service) Service) INFO INFO -- Configuring Configuring enterprise enterprise application: application: /home/kubam/workspaces/java/various/jee-examples/stockapp/stockapp-ejb/home/kubam/workspaces/java/various/jee-examples/stockapp/stockapp-ejbopenejbtest/dozerquotationconverterintegrationtest openejbtest/dozerquotationconverterintegrationtest INFO INFO -- Auto-deploying Auto-deploying ejb ejb DozerConverterCache: DozerConverterCache: EjbDeployment(deploymentEjbDeployment(deploymentid=DozerConverterCache) id=dozerconvertercache) INFO INFO -- Auto-deploying Auto-deploying ejb ejb DozerQuotationConverter: DozerQuotationConverter: EjbDeployment(deploymentEjbDeployment(deploymentid=DozerQuotationConverter) id=dozerquotationconverter) INFO INFO -- Configuring Configuring Service(id=Default Service(id=Default Managed Managed Container, Container, type=container, type=container, provider-id=default ManagedContainer) provider-id=default ManagedContainer) INFO INFO -- Auto-creating Auto-creating aa container container for for bean bean pl.marchwicki.jee.stockapp.ejb.dozerquotationconverterintegrationtest: pl.marchwicki.jee.stockapp.ejb.dozerquotationconverterintegrationtest: Container(type=MANAGED, Container(type=MANAGED, id=default id=default Managed Managed Container) Container) INFO INFO -- Creating Creating Container(id=Default Container(id=Default Managed Managed Container) Container)

15 class class HelloWorldServiceIntegrationTest HelloWorldServiceLocal HelloWorldServiceLocal void void shouldreturnhello() shouldreturnhello() {{ assertequals(helloworldservice.sayhello("jakub"), assertequals(helloworldservice.sayhello("jakub"), "Hello! "Hello! Jakub"); Jakub"); //... //...

16 class class AuditMessageReceiverTest AuditMessageReceiverTest {{ final final String String originaltestmessage originaltestmessage == "Hello "Hello World!"; World!"; EntityManager EntityManager void void processqueue() processqueue() throws throws JMSException JMSException {{ List<AuditLog> List<AuditLog> list list == em.createquery("from em.createquery("from AuditLog", AuditLog", AuditLog.class).getResultList(); AuditLog.class).getResultList(); assertnotnull(list); assertnotnull(list); assertequals(1, assertequals(1, list.size()); list.size()); assertequals(originaltestmessage, assertequals(originaltestmessage, list.get(0).getmessage()); list.get(0).getmessage()); //.. //..

17 class class AuditMessageProcessorTest == "ConnectionFactory", "ConnectionFactory", mappedname mappedname == "ConnectionFactory") "ConnectionFactory") ConnectionFactory ConnectionFactory == "queue/audit", "queue/audit", mappedname mappedname == "queue/audit") "queue/audit") Queue Queue == 2000) 2000) void processqueue() void processqueue() throws throws Exception Exception {{ final final Connection Connection connection connection == connectionfactory.createconnection(); connectionfactory.createconnection(); connection.start(); connection.start(); final final Session Session session session == connection.createsession(false, connection.createsession(false, Session.AUTO_ACKNOWLEDGE); Session.AUTO_ACKNOWLEDGE); final final MessageConsumer MessageConsumer incoming incoming == session.createconsumer(queue); session.createconsumer(queue); Message Message receive receive == incoming.receive(); incoming.receive(); assertthat(receive, assertthat(receive, new new IsInstanceOf(TextMessage.class)); IsInstanceOf(TextMessage.class)); assertequals(originaltestmessage, assertequals(originaltestmessage, ((TextMessage) ((TextMessage) receive).gettext()); receive).gettext()); //... //...

18 class class HelloWorldServiceIntegrationTest void void shouldcallwebservice() shouldcallwebservice() throws throws Exception Exception {{ URL URL wsdldocumentlocation wsdldocumentlocation == new new URL(" URL(" wsdl"); wsdl"); String String namespaceuri namespaceuri == " " String String servicepart servicepart == "HelloWorldServiceService"; "HelloWorldServiceService"; QName QName serviceqn serviceqn == new new QName(namespaceURI, QName(namespaceURI, servicepart); servicepart); Service Service service service == Service.create(wsdlDocumentLocation, Service.create(wsdlDocumentLocation, serviceqn); serviceqn); HelloWorldServiceLocal HelloWorldServiceLocal helloworld helloworld == service.getport(helloworldservicelocal.class); service.getport(helloworldservicelocal.class); String String ss == helloworld.sayhello("jakub"); helloworld.sayhello("jakub"); assertequals("hello! assertequals("hello! Jakub", Jakub", s); s); //... //...

19 The Bad Differences between containers Vagueness of the EJB spec No test with the actual server

20 JNDI tree {deploymentid} / {interfaceclass} {appname} / {modulename} / {beanname} But where it s localted? java: app/* java: comp/env/* java: global/*

21 Multiple names interface interface Service Service {{ String String hello(); hello();

22 Multiple names interface interface Service Service {{ String String class class MyService MyService implements implements Service Service {{ String String hello() hello() {{ return return "Hello "Hello world!"; world!";

23 Multiple names interface interface Service Service {{ String String class class MyService MyService implements implements Service Service {{ { String String hello() return return "Hello "Hello world!"; world!"; class class MyOtherService MyOtherService implements implements Service Service {{ String String hello() hello() {{ return return "Hello "Hello GeeCON!"; GeeCON!";

24 Multiple names interface interface Service Service {{ class class Client class class MyService MyService Service {{ Service Service service; Service service; String { String hello() return "Hello world!"; return "Hello world!"; class class MyOtherService MyOtherService implements implements void init() {{ void init() System.out.println(service.hello()); Service Service {{ System.out.println(service.hello()); String String hello() hello() {{ return return "Hello "Hello GeeCON!"; GeeCON!";

25 DEPLOYMENTS DEPLOYMENTS IN IN ERROR: ERROR: Deployment "vfs:///opt/java/jbossdeployment "vfs:///opt/java/jboss6.1.0.final/server/default/deploy/module.jar" Final/server/default/deploy/module.jar" is is in in error error due due to to the the following following reason(s): reason(s): java.lang.runtimeexception: java.lang.runtimeexception: Specified Specified reference reference [EJB [EJB Reference: Reference: beaninterface beaninterface 'pl.marchwicki.jee6.service', 'pl.marchwicki.jee6.service', beanname beanname 'null', mappedname 'null', lookupname 'null', owning unit 'null', mappedname 'null', lookupname 'null', owning unit ssenterprisebeanmetadata.client}'] ssenterprisebeanmetadata.client}'] was was matched matched by by more more than than one one EJB: EJB: vice}, vice}, rservice}]. rservice}]. Specify Specify beanname beanname explciitly explciitly or or ensure ensure beaninterface beaninterface is is unique. unique.

26 INFO: INFO: Created Created Ejb(deployment-id=Client, Ejb(deployment-id=Client, ejb-name=client, ejb-name=client, container=my container=my Singleton Container) Singleton Container) May May 11, 11, :23:24 4:23:24 PM PM org.apache.openejb.assembler.classic.assembler org.apache.openejb.assembler.classic.assembler startejbs startejbs INFO: INFO: Started Started Ejb(deployment-id=MyService, Ejb(deployment-id=MyService, ejb-name=myservice, ejb-name=myservice, container=my Stateless Container) container=my Stateless Container) May May 11, 11, :23:24 4:23:24 PM PM org.apache.openejb.assembler.classic.assembler org.apache.openejb.assembler.classic.assembler startejbs startejbs INFO: INFO: Started Started Ejb(deployment-id=MyOtherService, Ejb(deployment-id=MyOtherService, ejb-name=myotherservice, ejb-name=myotherservice, container=my container=my Stateless Stateless Container) Container) Hello world! Hello world!

27 class class Todo Todo {{ private private long long == 1) 1) private private String String title; title; private private long long order; order; private private boolean boolean completed; completed; //... //...

28 class class Todo Todo {{ private private long long == 1) 1) private private String String class class TodoResource TodoResource {{ private private long long order; order; private private boolean boolean completed; completed; List<Todo> List<Todo> getall() getall() {{ return return Todo Todo long long id) id) {{ return return store.get(id); store.get(id); //... //...

29 GET GET /todos/1 /todos/1 HTTP/1.1 HTTP/1.1 Host: localhost Host: localhost GET GET /todos /todos HTTP/1.1 HTTP/1.1 Host: localhost Host: localhost HTTP/1.1 HTTP/ OK OK {{ HTTP/1.1 HTTP/ OK OK [[ "id": "id": 1, 1, "title": "title": "First "First todo", todo", "order": "order": 1, 1, "completed": "completed": false false {{ }, }, {{ ]] "id": "id": 1, 1, "title": "title": "First "First todo", todo", "order": "order": 1, 1, "completed": "completed": false false "id": "id": 2, 2, "title": "title": "Second "Second todo", todo", "order": "order": 2, 2, "completed": "completed": false false

30 GET GET /todos/1 /todos/1 HTTP/1.1 HTTP/1.1 Host: localhost Host: localhost GET GET /todos /todos HTTP/1.1 HTTP/1.1 Host: localhost Host: localhost HTTP/1.1 HTTP/ OK OK {{ todo: todo: {{ "id": "id": 1, 1, "title": "title": "First "First todo", todo", "order": "order": 1, 1, "completed": "completed": false false HTTP/1.1 HTTP/ OK OK {{ todo: todo: [[ {{ "id": "id": 1, 1, "title": "title": "First "First todo", todo", "order": "order": 1, 1, "completed": "completed": false false }, }, {{ "id": "id": 2, 2, "title": "title": "Second "Second todo", todo", "order": "order": 2, 2, "completed": "completed": false false ]]

31 GET GET /todos/1 /todos/1 HTTP/1.1 HTTP/1.1 Host: localhost Host: localhost GET GET /todos /todos HTTP/1.1 HTTP/1.1 Host: localhost Host: localhost HTTP/1.1 HTTP/ OK OK {{ todo: todo: {{ "id": "id": 1, 1, "title": "title": "First "First todo", todo", "order": "order": 1, 1, "completed": "completed": false false HTTP/1.1 HTTP/ OK OK {{ todo: todo: [[ {{ "id": "id": 1, 1, "title": "title": "First "First todo", todo", "order": "order": 1, 1, "completed": "completed": false false }, }, {{ "id": "id": 2, 2, "title": "title": "Second "Second todo", todo", "order": "order": 2, 2, "completed": "completed": false false ]]

32 The Ugly Loads of boilerplate code Tests only EJBs Never deployed

33 Configuration class class AuditMessageReceiverTest AuditMessageReceiverTest {{ final final String String originaltestmessage originaltestmessage == "Hello "Hello World!"; World!"; EntityManager EntityManager void void processqueue() processqueue() throws throws JMSException JMSException {{ List<AuditLog> List<AuditLog> list list == em.createquery("from em.createquery("from AuditLog", AuditLog", AuditLog.class).getResultList(); AuditLog.class).getResultList(); assertnotnull(list); assertnotnull(list); assertequals(1, assertequals(1, list.size()); list.size()); assertequals(originaltestmessage, assertequals(originaltestmessage, list.get(0).getmessage()); list.get(0).getmessage()); //.. //..

34 class class AuditMessageReceiverTest EjbJar EjbJar module() module() {{ final final EjbJar EjbJar ejbjar ejbjar == new new EjbJar(); EjbJar(); ejbjar.addenterprisebean(new ejbjar.addenterprisebean(new StatelessBean(AuditMessageProcessing.class)); StatelessBean(AuditMessageProcessing.class)); ejbjar.addenterprisebean(new ejbjar.addenterprisebean(new StatelessBean(AuditLoggerService.class)); StatelessBean(AuditLoggerService.class)); ejbjar.addenterprisebean(new ejbjar.addenterprisebean(new MessageDrivenBean(AuditingMessageListerner.class)); MessageDrivenBean(AuditingMessageListerner.class)); return return ejbjar; ejbjar; //.. //..

35 class class AuditMessageReceiverTest AuditMessageReceiverTest {{ PersistenceUnit PersistenceUnit persistence() persistence() {{ PersistenceUnit PersistenceUnit unit unit == new new PersistenceUnit("stockapp-audit"); PersistenceUnit("stockapp-audit"); unit.setjtadatasource("defaultds"); unit.setjtadatasource("defaultds"); unit.setprovider(hibernatepersistence.class); unit.setprovider(hibernatepersistence.class); unit.addclass(auditlog.class); unit.addclass(auditlog.class); Properties Properties dbproperties dbproperties == new new Properties(); Properties(); dbproperties.setproperty("hibernate.hbm2ddl.auto", dbproperties.setproperty("hibernate.hbm2ddl.auto", "create"createdrop"); drop"); dbproperties.setproperty("hibernate.dialect", dbproperties.setproperty("hibernate.dialect", "org.hibernate.dialect.hsqldialect"); "org.hibernate.dialect.hsqldialect"); dbproperties.setproperty"hibernate.use_sql_comments", dbproperties.setproperty"hibernate.use_sql_comments", "true"); "true"); dbproperties.setproperty("hibernate.show_sql", dbproperties.setproperty("hibernate.show_sql", "true"); "true"); dbproperties.setproperty("hibernate.format_sql", dbproperties.setproperty("hibernate.format_sql", "true"); "true"); unit.setproperties(dbproperties); unit.setproperties(dbproperties); return return unit; unit; //.. //..

36 class class AuditMessageReceiverTest AuditMessageReceiverTest {{ Properties Properties config() config() throws throws Exception Exception {{ Properties Properties pp == new new Properties(); Properties(); p.put("defaultds", p.put("defaultds", "new://resource?type=datasource"); "new://resource?type=datasource"); p.put("defaultds.jdbcdriver", p.put("defaultds.jdbcdriver", "org.hsqldb.jdbcdriver"); "org.hsqldb.jdbcdriver"); p.put("defaultds.jdbcurl", "jdbc:hsqldb:mem:testdb"); p.put("defaultds.jdbcurl", "jdbc:hsqldb:mem:testdb"); return return p; p; //.. //..

37 Test only EJB It s not a real application server Webservices: Apache CXF JMS: Apache MQ JPA: OpenJPA Hibernate (any provider)

38 Where we are now?

39 The aliens have landed Arquillian is a testing framework There are runners Containers & Enrichers

40 The aliens have landed Arquillian is a testing framework There are runners JUnit TestNG Containers & Enrichers

41 The aliens have landed Arquillian is a testing framework There are runners Containers Weld Tomcat JBoss Glassfish & Enrichers

42 The aliens have landed Arquillian is a testing framework There are runners Containers & Enrichers glue layer between your code and the container: inject, track results

43 A natural evolution

44 The are three modes Embedded You run your app server together with your code, in a single JVM Managed Arquillian starts and stops your nodes, together with an app, in separate JVMs Remote Everything is remotly deployed

45 And four ways for communicating results Local Same JVM, local bindings Servlet 2.5 Pre JEE-6 containers Servlet 3.0 Leveraging async servlets JMX Jboss AS 7 way

46 How it works in practice

47 Why we do it? Real test with real services (no mocks movement) With real environment Short feedback cycle

48 What s next Persitence Extension (DBUnit) GWT Extension JSFUnit BPEL testing Performance?

49 Call for arms Arquillian Test Porting Initiative

50 browse/tomee arquillian-test-porting-initiative.html

51 Projects to tackle Active MQ Apache CXF TomEE & OpenEJB MyFaces OpenWenBeans BVal

52 Lemme show you

53 You can innovate on nonfunctional areas, such as devops, logging, metrics, etc, if your core business needs to be more conservative.

54 Innovation comes not just from using new technologies, but also from using new techniques with old boring technologies

55 Questions

Example simple-mdb can be browsed at https://github.com/apache/tomee/tree/master/examples/simple-mdb

Simple MDB Example simple-mdb can be browsed at https://github.com/apache/tomee/tree/master/examples/simple-mdb Below is a fun app, a chat application that uses JMS. We create a message driven bean, by