GeeCON 2012 hurdle run through ejb testing
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This document discusses testing Enterprise JavaBeans (EJB) applications. It acknowledges that EJB frameworks were not originally designed with testing in mind. However, it outlines several approaches that can be used to test EJBs, including unit testing from the bottom of the test pyramid, using dependency injection frameworks like Spring that facilitate testing, and using embedded containers or the Arquillian testing framework to test more fully integrated applications. The document advocates for testing EJB applications and provides examples of how different testing frameworks approach testing EJBs.
GeeCON 2012 hurdle run through ejb testing
- 1. Hurdle run through EJB testing Jakub www.marchwicki.pl / @kubem
- 2. This is not only about testing Neither about EJB Nor TDD Just somewhere in between
- 3. WHO IS THIS GUY?!
- 4. Business intelligence and data modelling Inteligent marketing Data mining I’m part of Automotive Group Working on Operation Data Store Realtime view for Data Warehouse
- 5. So let’s start with EJB Is it a a plane? Is it a bird? Is it a framework?
- 6. JEE takes all these technologies Puts it together In a single server Big server And we are enterprise (from now on)
- 7. According to the spec You are now about to Develop Assemble Deploy Run an Enterprise Solution
- 8. Emmm… - Are we testing anything here, sir? - Nah… Test are for testers, n00b!
- 9. TDD It’s a Tester Driven Development … bitch please!
- 12. But seriously – Test Pyramid
- 13. Tests…? But tests slows me down They need maintenance This is too simple to test And I don’t make mistakes afterall This is legacy code, there are no tests Build takes time… more time http://www.slideshare.net/sebrose/common-objections-to-tdd-and-their-refutations
- 15. Start from the bottom Unit tests don’t: talk to the database communicate over network touch the file system need to be run independently (tests can run simultaneously) need special environment configuration
- 16. No tests in EJB? If these are integretion tests… It means… There are no tests in EJB… Woohoo! Quick win!
- 17. Ekhmmm… Is EJB the only framework? How do other tackle testing?
- 19. You know when it’s Spring Rod Johnson says it’s all about testing
- 20. Dependency Injection @ContextConfiguration @RunWith(SpringJUnit4ClassRunner.class) public class ExampleConfigurationTests { @Autowired ApplicationContext ctx; @Autowired MyService service; @Test public void servletTest() throws Exception { //.. yada yada } }
- 21. Database tests <beans> <jdbc:embedded-database id="dataSource" type="HSQL"> <jdbc:script location="import.sql"/> </jdbc:embedded-database> </beans>
- 22. Spring + Web @Autowired ApplicationContext ctx; @Autowired TaskController controller; @Test public void servletTest() throws Exception { MockHttpServletRequest req = new MockHttpServletRequest("GET", "/tasks"); MockHttpServletResponse resp = new MockHttpServletResponse(); HandlerAdapter handlerAdapter = ctx.getBean(AnnotationMethodHandlerAdapter.class); final ModelAndView model = handlerAdapter.handle(req, resp, controller); assertViewName(model, "tasks"); assertAndReturnModelAttributeOfType(model, "task", Task.class); assertAndReturnModelAttributeOfType(model, "tasks", List.class); //.. create testTask object assertModelAttributeValue(model, "tasks", Arrays.asList(testTask)); assertModelAttributeValue(model, "task", new Task()); }
- 23. Spring + Web (2) MockMvcBuilders.annotationConfigSetup(TestConfiguration.class) .build() .perform(get("/resources/Spring.js")) .andExpect(content().type("application/octet-stream")) .andExpect(content().string(containsString("Spring={};")));
- 24. RestEASY MockHttpRequest request = MockHttpRequest.get("/user/1234"); MockHttpResponse response = new MockHttpResponse(); Dispatcher dispatcher = MockDispatcherFactory.createDispatcher(); dispatcher.invoke(request, response); assertEquals(response.getStatus(), HttpServletResponse.SC_METHOD_NOT_ALLOWED); URI uri = UriBuilder.fromPath("/user/{arg1}/delete").build(clientId); MockHttpRequest request = MockHttpRequest.get(uri.toString()); MockHttpResponse response = new MockHttpResponse(); dispatcher.invoke(request, response); assertEquals(response.getStatus(), HttpServletResponse.SC_OK); assertTrue(response.getContentAsString().contains("def"), "Response should contain 'def' result."); assertTrue(response.getContentAsString().contains("xx"), "Response should contain 'xx' result."); assertTrue(response.getContentAsString().contains("123"), "Response should contain '123' result.");
- 25. There are frameworks… … and frameworks Some things are built with testing in mind
- 26. But we are to talk about EJB … available since 2006 (EJB 3.0) Vendors deliver a platform And they don’t really care about testing Just until now… 6 f**kn years EJB 3.1 is also live Still noone cares about tests (nearly noone)
- 27. Back to The Pyramid
- 28. Let’s have a look Welcome the sample application https://github.com/kubamarchwicki/geecon-ejbtest-workshop
- 29. Mate! It’s IDE time!
- 31. Fully blown integration There is a hassle with maintaing DI Hello… calling dr. Container It’s your job afterall
- 32. Are there other options? Embed a container bootsrtap whole application test end2end
- 33. Mate! It’s IDE time!
- 35. What’s else - Open EJB yet another embedded container
- 36. What’s else - Open EJB PROS It just works! Selective classpath scanning!
- 37. What’s else - Open EJB PROS It just works! Selective classpath scanning! CONS Different than your production container
- 38. What’s else (2) - Arquillian wooow, so there is a test framework for EJB
- 39. What’s else (2) - Arquillian PROS Closer to actual production environment Independent from the actual container
- 40. What’s else (2) - Arquillian PROS Closer to actual production environment Independent from the actual container CONS Just graduated Our container’s adapter is still in alpha
- 41. Arquillian seems nice Manage lifecycle for you Shrinkwrap creates an archive Adapters link between any container and arquillian Remote testing / embedded testing
- 42. Mate! It’s IDE time!
- 43. Jakub www.marchwicki.pl @kubem