Test Java EE applications with - PowerPoint Presentation

Slide1

Test Java EE applications with Arquillian

Ivan St. IvanovSlide2

About me

@

ivan_stefanov

nosoftskills.comSlide3
Slide4

“

The purpose of automated testing is to enable change. Verifying correctness is just a nice side effect.

-

Jeremy

NorrisSlide5

Java EE Changed a Lot

Standalone technologiesEJB containerJPACDI

Arquillian testing frameworkSlide6

Techniques to test Java EE apps

Testing PersistenceTesting Contexts and Dependency Injection (CDI)Testing business logicTesting whole scenariosSlide7

The showcase app

Collects match predictions from registered usersAward points for correct predictionsUsed technologies

Java 8Java EE 8 – JPA, CDI, EJB, JAX-RS, JSFSource code:https://github.com/ivannov/predcomposer Slide8
Slide9

Testing Persistence

Use embedded databases (HSQLDB, Derby)Covered by other tests, often not neededUsed for quick check of persistence codeSlide10

1) Create persistence.xml

<

persistence

version

="2.1"

>

<

persistence-unit

name

="

predcomposer

-test"

transaction-type

="RESOURCE_LOCAL"

>

<

provider

>

org.hibernate.jpa.HibernatePersistenceProvider

</

provider

>

<

properties

>

<

property

name

="

javax.persistence.jdbc.driver

“

value

="

org.hsqldb.jdbcDriver

"

/>

<

property

name

="javax.persistence.jdbc.url“

value

="

jdbc:hsqldb:mem:testdb

"

/>

<

property

name

="

javax.persistence.jdbc.user

"

value

="

sa

"

/>

<

property

name

="

javax.persistence.jdbc.password

"

value

=""

/>

</

properties

>

</

persistence-unit

>

</

persistence

>Slide11

2) Initialize

EntityManager

protected static

EntityManager

entityManager

;

@

BeforeClass

public static void

setupTestObjects

() {

EntityManagerFactory

emf

= Persistence

.

createEntityManagerFactory

(

"

predcomposer

-test"

);

entityManager

=

emf.createEntityManager

();

}Slide12

3) Begin transaction

@Before

public void

setUp

()

throws

Exception {

entityManager

.getTransaction

().begin

();

insertTestData

();

entityManager

.flush

();

this

.

competitionsService

=

new

CompetitionsService

();

competitionsService

.

entityManager

=

entityManager

;

}Slide13

@Test

public void

shouldStoreCompetition

()

throws

Exception {

Competition

newCompetition

=

new

Competition(

"Premiership 2015/2016"

,

"The English Premier League"

);

Competition

storedCompetition

=

competitionsService

.storeCompetition(newCompetition); assertNotNull(storedCompetition.getId()); assertEquals(newCompetition, entityManager.find(Competition.class, storedCompetition.getId()));}

4) Write your testSlide14

5) Cleanup

@After

public void

tearDown

() {

entityManager

.getTransaction

().rollback();

}

@

AfterClass

public static void

closeEntityManager

() {

entityManager

.close

();

}Slide15
Slide16

Testing CDI

Use CDI Unit or DeltaspikeLaunches CDI containerEasy injection of dependencies, mocks, alternatives

Control of requests and sessionsUsed for quick tests when dependencies and scopes are involvedSlide17

1) Add dependency

<

dependency

>

<

groupId

>

org.jglue.cdi

-unit</

groupId

>

<

artifactId

>cdi-unit</

artifactId

>

<

version

>3.1.2</

version

> <scope>test</scope></dependency>Slide18

@

RunWith

(

CdiRunner.

class

)

public class

ViewGamePredictionsBeanTest

{

@Inject

private

ViewGamePredictionsBean

bean

;

@Test

public void shouldLoadGamePredictionsUponRequest() { bean.showGamePredictions(game2); assertEquals(2, bean.getPredictions().size()); }}2) Write the testSlide19

@Alternative

public class

PredictionsServiceAlternative

extends

PredictionsService

{

@

Override

public

Set<Prediction>

getPredictionsForGame

(Game game) {

// return two

predictions

}

}3) Create alternativeSlide20

@

RunWith

(

CdiRunner.

class

)

@

ActivatedAlternatives

({

PredictionsServiceAlternative.

class

,

})

public class

ViewGamePredictionsBeanTest

{

4

)

Add

the alternativeSlide21
Slide22

Greeting earthlingsSlide23

Core principles

Tests should be portable to any containerTests should be executable from both IDE and build toolThe platform should extend existing test frameworksSlide24

Step 1 – pick a container

Container extensionsJBoss, Tomcat, Weld, Glassfish, Jetty, WebSphere,

WebLogicSlide25

1) Add dependencies and profile

<

dependency

>

<

groupId

>

org.jboss.arquillian.junit

</

groupId

>

<

artifactId

>

arquillian

-

junit

-container</

artifactId

>

<scope>test</scope></dependency><dependency> <groupId>org.wildfly</groupId> <artifactId> wildfly-arquillian-container-managed </

artifactId

>

<

scope

>test</

scope

>

</

dependency

>Slide26

Step 2 – connect the container

Container typesEmbedded Managed

RemoteSlide27

2) Configure container

<

arquillian

>

<

container

qualifier

="

arquillian

-

wildfly

-managed"

>

<

configuration

>

<

property

name

="

jbossHome"> target/wildfly-9.0.1.Final </property> </configuration> </container> </arquillian>Slide28

Step 3 – package and deploy

ShrinkWrap libraryDeployment

Resolve from MavenCreate descriptorsSlide29

@

RunWith

(

Arquillian.

class

)

public class

CompetitionsServiceIntegrationTest

{

@Deployment

public static

WebArchive

createDeployment

() {

return

ShrinkWrap.create(WebArchive.class) .addClass(CompetitionsService.class) .addPackage(Prediction.class.getPackage()) .addAsResource( new File("src/main/resources/META-INF/persistence.xml"),

"META-INF/persistence.xml"

);

}

}

3) Prepare the test archiveSlide30

Step 4 – run the test

Tests runs in-containerCDI, EJB, JNDI available

No need to mock most of the servicesPresent the result as a normal unit testSlide31

@Inject

private

CompetitionsService

competitionsService

;

@Test

public

void

shouldCreateCompetition

()

throws

Exception {

testCompetition

= new Competition("Premiership 2015/2016", "English Premier League"); testGame = new Game("Manchester City", "Juventus", LocalDateTime.of(2015, 9, 15, 21,

45

));

testCompetition

.getGames

().add(

testGame

);

Competition

persistedCompetition

=

competitionsService

.storeCompetition

(

testCompetition

);

assertNotNull

(

persistedCompetition.getId

());

assertEquals

(

testCompetition

,

persistedCompetition

);

}

4.1) Write the testSlide32

@

RunWith

(

Arquillian.

class

)

@

RunAsClient

public class

CompetitionResourceTest

{

@Test

public void

shouldCreateCompetition

(

@

ArquillianResource

URL base) { URL url = new URL(base, "rest/competition"); WebTarget target = ClientBuilder.newClient().target(url.toExternalForm()); Form newCompetitionForm = new Form(); newCompetitionForm.param("name", COMPETITION_NAME); newCompetitionForm.param

(

"description"

,

DESCRIPTION

);

Response

response

=

target.request

(

MediaType.

APPLICATION_JSON_TYPE

)

.

post(

Entity.

entity

(

newCompetitionForm

,

MediaType.

APPLICATION_FORM_URLENCODED_TYPE

));

assertEquals

(

201

,

response.getStatus

());

}

}

4.2) Client side testsSlide33

Step 5 –

undeploy

the testUndeploy the test archive

Disconnect or stop the containerSlide34
Slide35

That’s not all

Persistence extensionWarpDroneGraphene

AngularJS, Android, OSGi…Slide36

Graphene

extensionDrive the application via page navigation

Support for AJAXPageObject patternSlide37

1) Add dependencies

<

dependency

>

<

groupId

>

org.jboss.arquillian.extension

</

groupId

>

<

artifactId

>

arquillian

-drone-

bom

</

artifactId

>

<type>pom</type> <scope>import</scope></dependency><dependency> <groupId>org.jboss.arquillian.selenium</groupId> <artifactId>selenium-bom</

artifactId

>

<

type

>

pom

</

type

>

<

scope

>import</

scope

>

</

dependency

>

<

dependency

>

<

groupId

>

org.jboss.arquillian.graphene

</

groupId

>

<

artifactId

>

graphene-webdriver

</

artifactId

>

<

type

>

pom

</

type

>

<

scope

>test</

scope

>

</

dependency

>Slide38

2) Configure extension

<

arquillian

>

<

extension

qualifier

="

webdriver

"

>

<

property

name

="browser"

>

phantomjs

</

property

>

</extension></arquillian>Slide39

3) Create the page object

@Location

(

"

login.jsf

"

)

public class

LoginPage

{

@

FindBy

(id =

"

loginForm:userName

"

)

private

WebElement userName; @FindBy(id = "loginForm:password") private WebElement password; @FindBy(id = "loginForm:login")

private

WebElement

loginButton

;

public void

login(String

userName

, String password) {

this

.

userName

.sendKeys

(

userName

);

this

.

password

.sendKeys

(password);

guardHttp

(

loginButton

).click();

}

}Slide40

4) Create the scenario test

@

RunWith

(

Arquillian.

class

)

@

RunAsClient

public class

LoginScenarioTest

{

@Drone

private

WebDriver

browser

; @Page private HomePage homePage; @Test public void shouldSayHelloUponSuccessfulLogin( @InitialPage LoginPage loginPage) { loginPage.login

(

"

ivan

"

,

"

ivan

"

);

homePage

.assertGreetingMessage

(

"Ivan"

);

homePage

.assertGameFormVisible

(

true

);

}

}Slide41
Slide42
Slide43

Resources

Showcase apphttps://github.com/ivannov/predcomposer Arquillian

http://aslakknutsen.github.io/presentations/https://rpestano.wordpress.com/2014/06/08/arquillian/

https://rpestano.wordpress.com/2014/10/25/arquillian-and-mocks/