INTEGRATION TEST WITH
REAL EE TESTING WITH ARQUILLIAN Presented by Wael ANIBA - UP JEE @ESPRIT - 2013/2014 -
[email protected]
ARQUILLIAN
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Java EE Development Evolution
Container Services
JNDI EJB2.x
POJO Model
Dependency Framework Ease of Ease of Injection Integration Development Testing
Struts Spring Hibernate
EJB3 JPA JSF
Seam
CDI Weld
Arquillian
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Real EE Testing
Shift Focus to Testing in EE Lots
of developers abandoned EE in search of greener “testing” pastures. Testing has not been the focus for most of the platform’s history. Container-based components cry out for ease of testability! Ride the wave… encourage support and adoption
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Real EE Testing What does “real” mean?
Unit testing using doubles, Fakes, Stubs or Mocks can only get us so far when working with container managed resources.
We need to test components, not just the classes.
Put the tests in the container managing container within the test.
Get the interactions correct between container and its managed resources.
rather
than
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How to do it? Rolling Your Own How
do I get unit test class into the container? Remote
deployment (using hook into server) Bootstrap container inside test How
do I see the results of the test? How does test isolation work? Test
Can
classpath-hell
I call it from IDE and get results?
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Challenges Challenges to testing in container
High barrier to entry
Substantial code, configuration and infrastructure
Most don’t run from IDE - where’s the feedback? Most aren’t reusable – tied to one project’s build Often slow (think “mvn package”) Can’t interact with containers from test (all black-box testing) 6
Arquillian
The Arquillian invasion takes up the challenge
Arquillian Features
JUnit
or TestNG compatible Abstracts out server lifecycle and deployment Injects container managed resources into test Zero reliance on build – run straight from IDE Two container modes – remote/embedded Pass-by-reference between test and server Extensible SPI to plug any container in Single test executed against all containers
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Arquillian Architecture
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Case Study
WHY ARQUILLIAN?
How does this solve our problems?
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Case Study
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Case Study
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Case Study
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Case Study
Implementations matter Testing with real Objects
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Case Study
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Case Study
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Case Study
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Case Study
Bringing the code as close as possible to production…
Arquilliant enters the scene
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Case Study
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Arquillian Runner
@RunWith(Arquillian.class) JUnit
>= 4.8.1 TestNG > 5.12.1
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ShrinkWrap @Deployment Assemble
test archives with ShrinkWrap Bundles the: Class/component to test Supporting classes Configuration and resource files Dependent libraries
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ShrinkWrap // #1 // #2 // #3
// #4
1. Annotate the method with @Deployment 2. Create a new JavaArchive. This will eventually create a JAR. 3. Add our Class-Under-Test to the archive. 4. Add an empty file named beans.xml to enable CDI. 22
Test enrichment
Arquillian
can enrich test class instances with dependencies. Supports: @EJB @Inject @Resource @PersistenceContext @PersistenceUnit @ArquillianResource Etc… 23
Revisiting dependency injection
Arquillian injects the bean into the test class instance, before running any tests.
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Writing your tests
Write
assertions as you normally would
No record-replay-verify model Assert as you typically do Use real objects in your assertions
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Running your tests
Run
the tests from your IDE or from your CI server, just like you would run unit tests Run as JUnit test - Alt+Shift+X, T Run as Maven goal - Alt+Shift+X, M
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Let’s recap // Use the Arquillian test runner. // A SessionBEan Bean, managed by the container, injected by Arquillian.
// Assemble a microdeployment.
// Test like you normally do. No mocks. Just the real thing.
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Under the hood
WHAT DID YOU JUST SEE?
The stuff that Arquillian does under the hood
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Under the hood Maven Profile
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Under the hood
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Under the hood
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Under the hood
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Under the hood
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Under the hood
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Arquillian Extensions
Drone: testing web-based user interface Graphene: extensions for Selenium Persistence: help writing tests where persistence layer is involved. Performance: checking that the performs within a specific range Seam 2: testing applications created with Seam 2 framework JBehave: BDD/TDD&ATDD with Arquillian Etc…
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Arquillian .org
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References
docs.jboss.org – Reference Guide arquillian.org Chris Wash - CapTech Ventures Alexis HASSLER – softShake - 2nd edition - Genève Vineet Reynolds - Testing with real objects
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QUESTIONS ?
REAL EE TESTING WITH ARQUILLIAN Presented by Wael ANIBA - UP JEE @ESPRIT - 2013/2014 -
[email protected]
