Testing Jboss Seam Bottom Up

Testing Seam applications from the bottom up. Daniel “Danno” Hinojosa [email_address] http://www.evolutionnext.com Developer, Trainer, Consultant

Measuring the Quality of your code? How do you know your software works now? How will you know if your software works tomorrow? How will you know if your software works when...

It's the end of an iteration demo time...or even worse, at deployment?

The purpose of our journey ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

@Entity @Table(name = "jsfone_album") public class Album { private Long id; private String name; private List<Artist> artists; .... } @Entity @Table(name = "jsfone_artist") public class Artist { private Long id; private String name; private List<Album> albums; .... } Entities for this small project....Simple Album.java Artist.java

@Stateful @Name("findAllAlbumsLikeArtistNameBean") @Scope(ScopeType.CONVERSATION) public class FindAllAlbumsLikeArtistNameBean implements FindAllAlbumsLikeArtistNameLocal, FindAllAlbumsLikeArtistNameRemote { public static final String ejbQL = "SELECT album From Album album left “ + “ join album.artists as artist where “ + “ artist.name like :fuzzyName"; private EntityManager entityManager; private List<Album> result; private String fuzzyName; @In public void setEntityManager(EntityManager entityManager) { this.entityManager = entityManager; } FindAllAlbumsLikeArtistNameBean.java

public void setName(String fuzzyName) { this.fuzzyName = fuzzyName; } @SuppressWarnings({"unchecked"}) public void find() { Query query = entityManager.createQuery(ejbQL); query.setParameter("fuzzyName", '%' + fuzzyName + '%'); result = (List<Album>) (List<?>) query.getResultList(); } @Factory("albums") public void initializeAlbums() { result = new ArrayList<Album>(); } @DataModel("albums") public List<Album> getResult() { return result; } @Remove @Destroy public void remove() { } } FindAllAlbumsLikeArtistNameBean.java (Continued)

Unit Testing is... ,[object Object]

public class MyCalculator { public int add(int i, int j) { return i+j; } } MyCalculator.java public class MyCalculatorTest { @Test public void testNormal() { MyCalculator calc = new MyCalculator(); assertEquals(calc.add(22, 44), 66); } @Test public void testNegative() { MyCalculator calc = new MyCalculator(); assertEquals(calc.add(-2, 2), 0); } } MyCalculatorTest.java

public class MyCalculator { public int add(int i, int j) { return i+j; } } MyCalculator.java public class MyCalculatorTest { public void testNormal() { MyCalculator calc = new MyCalculator(); assertEquals(calc.add(22, 44), 66); } public void testNegative() { MyCalculator calc = new MyCalculator(); assertEquals(calc.add(-2, 2), 0); } } MyCalculatorTest.java

Aren't we working on something useful?

public class FindAllAlbumsLikeArtistNameBeanUnitTest { @Test public void unitTestFind() { FindAllAlbumsLikeArtistNameBean findAllAlbumsLikeArtistNameBean = new FindAllAlbumsLikeArtistNameBean(); findAllAlbumsLikeArtistNameBean.setName("Prince"); findAllAlbumsLikeArtistNameBean.find(); assertEquals(result.size(), ?); } } FindAllAlbumsLikeArtistNameBeanUnitTest.java First Attempt

Fail...NullPointerExceptions...

How do we test for such dependencies without getting the whole system involved?

“ Don't tell your uncle what I said earlier about how he can't get a date because he bathes once a week and scratches himself in public, don't look at his unibrow, and only speak when spoken to.”

Easy Mock: http://www.easymock.org

@Stateful @Name("findAllAlbumsLikeArtistNameBean") @Scope(ScopeType.CONVERSATION) public class FindAllAlbumsLikeArtistNameBean implements FindAllAlbumsLikeArtistNameLocal, FindAllAlbumsLikeArtistNameRemote { public static final String ejbQL = "SELECT album From Album album left “ + “ join album.artists as artist where “ + “ artist.name like :fuzzyName"; private EntityManager entityManager; private List<Album> result; private String fuzzyName; @In public void setEntityManager(EntityManager entityManager) { this.entityManager = entityManager; } FindAllAlbumsLikeArtistNameBean.java For Review:

public void setName(String fuzzyName) { this.fuzzyName = fuzzyName; } @SuppressWarnings({"unchecked"}) public void find() { Query query = entityManager.createQuery(ejbQL); query.setParameter("fuzzyName", '%' + fuzzyName + '%'); result = (List<Album>) (List<?>) query.getResultList(); } @Factory("albums") public void initializeAlbums() { result = new ArrayList<Album>(); } @DataModel("albums") public List<Album> getResult() { return result; } @Remove @Destroy public void remove() { } } FindAllAlbumsLikeArtistNameBean.java (Continued) For Review:

Mocking the Entity Manager: Creating Mocks for Dependencies List<Album> fakeAlbums = new ArrayList<Album>(); fakeAlbums.add(new Album("Purple Rain")); fakeAlbums.add(new Album("1999")); EntityManager entityManager = createMock(EntityManager.class); Query query = createMock(Query.class); FindAllAlbumsLikeArtistNameBean findAllAlbumsLikeArtistNameBean = new FindAllAlbumsLikeArtistNameBean(); findAllAlbumsLikeArtistNameBean.setEntityManager(entityManager); expect(entityManager.createQuery(FindAllAlbumsLikeArtistNameBean.ejbQL)). andReturn(query); expect(query.setParameter("fuzzyName", "%Prince%")).andReturn(query); expect(query.getResultList()).andReturn(fakeAlbums); replay(entityManager); replay(query); findAllAlbumsLikeArtistNameBean.setName("Prince"); findAllAlbumsLikeArtistNameBean.find(); List<Album> result = findAllAlbumsLikeArtistNameBean.getResult(); assertEquals(result.size(), 2); verify(entityManager); verify(query);

Mocking the Entity Manager: Instantiate Artifact List<Album> fakeAlbums = new ArrayList<Album>(); fakeAlbums.add(new Album("Purple Rain")); fakeAlbums.add(new Album("1999")); EntityManager entityManager = createMock(EntityManager.class); Query query = createMock(Query.class); FindAllAlbumsLikeArtistNameBean findAllAlbumsLikeArtistNameBean = new FindAllAlbumsLikeArtistNameBean(); findAllAlbumsLikeArtistNameBean.setEntityManager(entityManager); expect(entityManager.createQuery(FindAllAlbumsLikeArtistNameBean.ejbQL)). andReturn(query); expect(query.setParameter("fuzzyName", "%Prince%")).andReturn(query); expect(query.getResultList()).andReturn(fakeAlbums); replay(entityManager); replay(query); findAllAlbumsLikeArtistNameBean.setName("Prince"); findAllAlbumsLikeArtistNameBean.find(); List<Album> result = findAllAlbumsLikeArtistNameBean.getResult(); assertEquals(result.size(), 2); verify(entityManager); verify(query);

Mocking the Entity Manager: Send in the Mock List<Album> fakeAlbums = new ArrayList<Album>(); fakeAlbums.add(new Album("Purple Rain")); fakeAlbums.add(new Album("1999")); EntityManager entityManager = createMock(EntityManager.class); Query query = createMock(Query.class); FindAllAlbumsLikeArtistNameBean findAllAlbumsLikeArtistNameBean = new FindAllAlbumsLikeArtistNameBean(); findAllAlbumsLikeArtistNameBean.setEntityManager(entityManager); expect(entityManager.createQuery(FindAllAlbumsLikeArtistNameBean.ejbQL)). andReturn(query); expect(query.setParameter("fuzzyName", "%Prince%")).andReturn(query); expect(query.getResultList()).andReturn(fakeAlbums); replay(entityManager); replay(query); findAllAlbumsLikeArtistNameBean.setName("Prince"); findAllAlbumsLikeArtistNameBean.find(); List<Album> result = findAllAlbumsLikeArtistNameBean.getResult(); assertEquals(result.size(), 2); verify(entityManager); verify(query);

Mocking the Entity Manager: Rehearse List<Album> fakeAlbums = new ArrayList<Album>(); fakeAlbums.add(new Album("Purple Rain")); fakeAlbums.add(new Album("1999")); EntityManager entityManager = createMock(EntityManager.class); Query query = createMock(Query.class); FindAllAlbumsLikeArtistNameBean findAllAlbumsLikeArtistNameBean = new FindAllAlbumsLikeArtistNameBean(); findAllAlbumsLikeArtistNameBean.setEntityManager(entityManager); expect(entityManager.createQuery(FindAllAlbumsLikeArtistNameBean.ejbQL)). andReturn(query); expect(query.setParameter("fuzzyName", "%Prince%")).andReturn(query); expect(query.getResultList()).andReturn(fakeAlbums); replay(entityManager); replay(query); findAllAlbumsLikeArtistNameBean.setName("Prince"); findAllAlbumsLikeArtistNameBean.find(); List<Album> result = findAllAlbumsLikeArtistNameBean.getResult(); assertEquals(result.size(), 2); verify(entityManager); verify(query);

Mocking the Entity Manager: Get it ready to react List<Album> fakeAlbums = new ArrayList<Album>(); fakeAlbums.add(new Album("Purple Rain")); fakeAlbums.add(new Album("1999")); EntityManager entityManager = createMock(EntityManager.class); Query query = createMock(Query.class); FindAllAlbumsLikeArtistNameBean findAllAlbumsLikeArtistNameBean = new FindAllAlbumsLikeArtistNameBean(); findAllAlbumsLikeArtistNameBean.setEntityManager(entityManager); expect(entityManager.createQuery(FindAllAlbumsLikeArtistNameBean.ejbQL)). andReturn(query); expect(query.setParameter("fuzzyName", "%Prince%")).andReturn(query); expect(query.getResultList()).andReturn(fakeAlbums); replay(entityManager); replay(query); findAllAlbumsLikeArtistNameBean.setName("Prince"); findAllAlbumsLikeArtistNameBean.find(); List<Album> result = findAllAlbumsLikeArtistNameBean.getResult(); assertEquals(result.size(), 2); verify(entityManager); verify(query);

Mocking the Entity Manager: Go on, do it! do it! do it! List<Album> fakeAlbums = new ArrayList<Album>(); fakeAlbums.add(new Album("Purple Rain")); fakeAlbums.add(new Album("1999")); EntityManager entityManager = createMock(EntityManager.class); Query query = createMock(Query.class); FindAllAlbumsLikeArtistNameBean findAllAlbumsLikeArtistNameBean = new FindAllAlbumsLikeArtistNameBean(); findAllAlbumsLikeArtistNameBean.setEntityManager(entityManager); expect(entityManager.createQuery(FindAllAlbumsLikeArtistNameBean.ejbQL)). andReturn(query); expect(query.setParameter("fuzzyName", "%Prince%")).andReturn(query); expect(query.getResultList()).andReturn(fakeAlbums); replay(entityManager); replay(query); findAllAlbumsLikeArtistNameBean.setName("Prince"); findAllAlbumsLikeArtistNameBean.find(); List<Album> result = findAllAlbumsLikeArtistNameBean.getResult(); assertEquals(result.size(), 2); verify(entityManager); verify(query);

Mocking the Entity Manager: Assert that all is well. List<Album> fakeAlbums = new ArrayList<Album>(); fakeAlbums.add(new Album("Purple Rain")); fakeAlbums.add(new Album("1999")); EntityManager entityManager = createMock(EntityManager.class); Query query = createMock(Query.class); FindAllAlbumsLikeArtistNameBean findAllAlbumsLikeArtistNameBean = new FindAllAlbumsLikeArtistNameBean(); findAllAlbumsLikeArtistNameBean.setEntityManager(entityManager); expect(entityManager.createQuery(FindAllAlbumsLikeArtistNameBean.ejbQL)). andReturn(query); expect(query.setParameter("fuzzyName", "%Prince%")).andReturn(query); expect(query.getResultList()).andReturn(fakeAlbums); replay(entityManager); replay(query); findAllAlbumsLikeArtistNameBean.setName("Prince"); findAllAlbumsLikeArtistNameBean.find(); List<Album> result = findAllAlbumsLikeArtistNameBean.getResult(); assertEquals(result.size(), 2); verify(entityManager); verify(query);

Mocking the Entity Manager: Finally verify that it all worked. List<Album> fakeAlbums = new ArrayList<Album>(); fakeAlbums.add(new Album("Purple Rain")); fakeAlbums.add(new Album("1999")); EntityManager entityManager = createMock(EntityManager.class); Query query = createMock(Query.class); FindAllAlbumsLikeArtistNameBean findAllAlbumsLikeArtistNameBean = new FindAllAlbumsLikeArtistNameBean(); findAllAlbumsLikeArtistNameBean.setEntityManager(entityManager); expect(entityManager.createQuery(FindAllAlbumsLikeArtistNameBean.ejbQL)). andReturn(query); expect(query.setParameter("fuzzyName", "%Prince%")).andReturn(query); expect(query.getResultList()).andReturn(fakeAlbums); replay(entityManager); replay(query); findAllAlbumsLikeArtistNameBean.setName("Prince"); findAllAlbumsLikeArtistNameBean.find(); List<Album> result = findAllAlbumsLikeArtistNameBean.getResult(); assertEquals(result.size(), 2); verify(entityManager); verify(query);

Groovy: http://groovy.codehaus.org

Groovy is an optional (dynamic/static) typed language that you really should know. ,[object Object],[object Object],[object Object],[object Object],[object Object]

public class AlbumGroovyUnitTest { @Test (groups = ["unit"]) def testParameters() { println 'testing parameters in groovy' Artist artist = [:] as Artist artist.name = 'Duran Duran' artist.id = 9 assert artist.equals(artist) assert (!artist.equals(null)) assert (!artist.equals('foo')) def parameters = [ name: 'Madonna', albums: [new Album(name:'Like A Virgin'), new Album(name:'Holiday')] ] def madonna = new Artist(parameters); assert madonna.getAlbums().size() == 2 } } Quick Groovy Unit-Testing

Integration Testing ,[object Object],has the best definition

JBoss Seam has a set of glorious tools to aid in integration testing

public class FindAllAlbumsLikeArtistNameBeanIntegrationTest extends SeamTest { @Test public void testBean() throws Exception { new ComponentTest() { @SuppressWarnings({"unchecked"}) protected void testComponents() throws Exception { setValue("#{findAllAlbumsLikeArtistNameBean.name}", "Prince"); invokeMethod("#{findAllAlbumsLikeArtistNameBean.find}"); List<Album> albums = (List<Album>) (List<?>) getValue("#{findAllAlbumsLikeArtistNameBean.result}"); assertEquals(albums.size(), 0); } }.run(); } } FindAllAlbumsLikeArtistNameBeanIntegrationTest.java Cool factor is mucho high! A small app server actually runs!

Integration Testing with Test Data and Seam

@Entity @Table(name = "jsfone_album") public class Album { private Long id; private String name; private List<Artist> artists; .... } @Entity @Table(name = "jsfone_artist") public class Artist { private Long id; private String name; private List<Album> albums; .... } Entities for review Album.java Artist.java

<dataset> <jsfone_artist id="1" name="Prince"/> <jsfone_artist id="2" name="Dean Martin"/> <jsfone_artist id="3" name="Black Sabbath"/> <jsfone_album id="1" name="1999"/> <jsfone_album id="2" name="Purple Rain"/> <jsfone_album id="3" name="The Very Best of Prince"/> <jsfone_album id="4" name="Italian Love Songs"/> <jsfone_album id="5" name="The Essential: Dean Martin"/> <jsfone_album id="6" name="Forever Cool"/> <jsfone_album id="7" name="We Sold Our Soul To Rock and Roll"/> <jsfone_album id="8" name="Black Sabbath"/> <jsfone_album id="9" name="Sabotage"/> dbunit/loadartistalbumdata.xml

<jsfone_albumartists albumID="1" artistID="1"/> <jsfone_albumartists albumID="2" artistID="1"/> <jsfone_albumartists albumID="3" artistID="1"/> <jsfone_albumartists albumID="4" artistID="2"/> <jsfone_albumartists albumID="5" artistID="2"/> <jsfone_albumartists albumID="6" artistID="2"/> <jsfone_albumartists albumID="7" artistID="3"/> <jsfone_albumartists albumID="8" artistID="3"/> <jsfone_albumartists albumID="9" artistID="3"/> </dataset> dbunit/loadartistalbumdata.xml (Continued)

public class FindAllAlbumsLikeArtistNameBeanIntegrationWithDBTest extends DBUnitSeamTest { @Test public void testStuff() throws Exception { new ComponentTest() { @SuppressWarnings({"unchecked"}) protected void testComponents() throws Exception { setValue("#{findAllAlbumsLikeArtistNameBean.name}", "Prince"); invokeMethod("#{findAllAlbumsLikeArtistNameBean.find}"); List<Album> albums = (List<Album>) getValue("#{findAllAlbumsLikeArtistNameBean.result}"); assertEquals(albums.get(0).getArtists().get(0).getName(), "Prince"); assertEquals(albums.size(), 3); } }.run(); } protected void prepareDBUnitOperations() { beforeTestOperations.add( new DataSetOperation("dbunit/loadartistalbumdata.xml") ); } } Cool factor is mucho higher people ! A small app server actually runs with test data! FindAllAlbumsLikeArtistNameBeanIntegrationWithDBTest.java

Test Integration with JSF Lifecycle Testing and Seam

@Test public void testOneRequest() throws Exception { new NonFacesRequest ("/findallalbumslikeartistname.xhtml") { protected void renderResponse() throws Exception { Object value = getValue("#{albums}"); assertTrue(value != null); if (value instanceof DataModel) { DataModel albums = (DataModel) value; assertEquals(albums.getRowCount(), 0); return; } fail("Not a data model"); } }.run(); FindAllAlbumsLikeArtistNameBeanPageTest.java A NonFacesRequest (“GET”)

new FacesRequest("/findallalbumslikeartistname.xhtml") { protected void updateModelValues() throws Exception { setValue("#{findAllAlbumsLikeArtistNameBean.name}", "Prince"); } protected void invokeApplication() throws Exception { invokeMethod("#{findAllAlbumsLikeArtistNameBean.find}"); } protected void renderResponse() throws Exception { Object value = getValue("#{albums}"); assertTrue(value != null); if (value instanceof DataModel) { DataModel albums = (DataModel) value; assertEquals(albums.getRowCount(), 3); } } }.run(); A Faces Request (“POST”) FindAllAlbumsLikeArtistNameBeanPageTest.java

Testing for conversations with JSF Lifcycle Testing and Seam

public void testConversation() throws Exception { String conversationId = new NonFacesRequest ("/processName.xhtml") {....} }.run(); new FacesRequest ("/processName.xhtml", conversationId ) {....} }.run(); new NonFacesRequest ("/processExperience.xhtml", conversationId ) {....} }.run(); new FacesRequest ("/processExperience.xhtml", conversationId ) {....} }.run(); new NonFacesRequest ("/thankyou.xhtml", conversationId ) {....} }.run(); } Conversation Testing

Seam Testing with Integration Mocks

Paying for the real thing can be expensive: @Stateless @Name("creditCardApprover") @Scope(ScopeType.STATELESS) public class CreditCardApproverBean implements CreditCardApproverLocal, CreditCardApproverRemote { @Logger Log log; public boolean approve(String creditCardNumber, int month, int year, int cvv2) { log.debug("Thanks for processing, you have now been charged $.10"); return true; } } CreditCardApproverBean.java

@Stateless @Name("creditCardApprover") @Scope(ScopeType.STATELESS) @Install(precedence = MOCK) public class CreditCardApproverMockBean implements CreditCardApproverLocal, CreditCardApproverRemote { public boolean approve(String creditCardNumber, int month, int year, int cvv2) { return creditCardNumber.endsWith("2222"); } } But paying an integration mock, or as I like to call it, an imposter, is cheap. CreditCardApproverMockBean.java

@Stateless @Name("processPaymentBean") @Scope(ScopeType.EVENT) public class ProcessPaymentBean implements ProcessPaymentLocal, ProcessPaymentRemote { private CreditCardApprover creditCardApprover; private String creditCardNumber; private int year; private int month; private int cvv2; @In(value = "creditCardApprover", create = true) public void setCreditCardApprover(CreditCardApprover creditCardApprover) { this.creditCardApprover = creditCardApprover; } //Getters and setters for year, month, cvv2 assumed public boolean process() { return creditCardApprover.approve(creditCardNumber, month, year, cvv2); } } Assuming we have interface driven design....Mocks win in integration ProcessPaymentBean.java

A review of what some great open source products you should know about.

CoberturA ,[object Object],[object Object],[object Object],[object Object],http://cobertura.sourceforge.net/

Selenium ,[object Object],[object Object],[object Object],[object Object],[object Object],http://selenium.openqa.org/

Hudson ,[object Object],[object Object],[object Object],[object Object],[object Object],https://hudson.dev.java.net/

I'm kind of tired now, I think I'm gonna go home..... .... but Mama always says leave time for Q&A. She says it's the right thing to do.

Testing Jboss Seam Bottom Up

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