JEConf 2014, Kiev

1. Spock
Евгений Борисов
bsevgeny@gmail.com

2. Meta & Intro
State Based Testing
Data Driven Testing
Interaction Based Testing
Spock Extensions
More Cool Stuff
What we’ll talk about

3. The creator of Spock
Groovy & Gradle committer
Works for Gradleware
@pniederw
3
Peter Niederwieser

4. A developer testing framework...
for Groovy and Java applications...
based on Groovy...
fully compatible with JUnit...
but going beyond!
Spock is...

5. Homepage
http://spockframework.org
Source Code
http://github.spockframework.org/spock
Documentation
http://docs.spockframework.org/en/latest
Spock Web Console
http://webconsole.spockframework.org
Spock Example Project
http://github.spockframework.org/spock-example
Slides and Code for this Presentation
http://github.spockframework.org/smarter-testing-with-spock
Getting Started

6. Who’s Using Spock?

7. Who’s Using Spock? (2)

8. Meta & Intro
State Based Testing
Data Driven Testing
Interaction Based Testing
Spock Extensions
More Cool Stuff
What we’ll talk about

9. Classical Unit Testing
Arrange
Act
Assert
Given-When-Then
State Based Testing

10. Classical Unit Testing
Arrange
Act
Assert
Given-When-Then
State Based Testing

11. • Blocks
setup: cleanup: expect: given: when: then: where: and:
• Fixture Methods
setup() cleanup() setupSpec() cleanupSpec()
• Instance and @Shared fields
• old() and thrown()
• Forces developers to think like users
• Nice looking reports (that no one reads)
Recap: State Based Testing

12. Meta & Intro
State Based Testing
Data Driven Testing
Interaction Based Testing
Spock Extensions
More Cool Stuff
What we’ll talk about

13. Test the same behavior...
...with varying data!
Data Driven Testing

14. Test the same behavior...
...with varying data!
Data Driven Testing

15. where: block
Data tables
External data sources
@Unroll
Recap: Data Driven Testing

16. Meta & Intro
State Based Testing
Data Driven Testing
Interaction Based Testing
Spock Extensions
More Cool Stuff
What we’ll talk about

17. How objects communicate
Mocking frameworks simplify the job
Spock has its own mocking framework
Interaction Based Testing

18. How objects communicate
Mocking frameworks simplify the job
Spock has its own mocking framework
Google it: “Mocks aren't Stubs”
Interaction Based Testing

19. How objects communicate
Mocking frameworks simplify the job
Spock has its own mocking framework
Interaction Based Testing

20. Creating
Mocking
Recap: Interaction Based Testing
def sub = Mock(Subscriber)
Subscriber sub = Mock()
1 * sub.receive("msg")
(1..3) * sub.receive(_)
(1.._) * sub.receive(_ as String)
1 * sub.receive(!null)
1 * sub.receive({it.contains("m")})
1 * _./rec.*/("msg")

21. Stubbing
Mocking and Stubbing
Impressing your friends
Recap: Interaction Based Testing (2)
// now returns status code
String receive(String msg) { ... }
sub.receive(_) >> "ok"
sub.receive(_) >>> ["ok", "ok", "fail"]
sub.receive(_) >> { msg -> msg.size() > 3 ? "ok" : "fail" }
3 * sub.receive(_) >>> ["ok", "ok", "fail"]
(_.._) * _._(*_) >> _

22. NEW IN 0.7
What’s new?

23. Group conditions/interactions w/ same target
Better mocking failure messages
New in 0.7 (1)
with(person) {
name == “Fred”
age == 30
sex == “male”
}
with(service) {
1 * start()
1 * stop()
}

24. Stubs
Spies
Groovy mocks
Declare interactions upfront
More at:
http://docs.spockframework.org/en/latest/new_and_noteworthy.html
New in 0.7 (2)
def person = Stub(Person)
def person = Spy(Person, constructorArgs: ["Fred", 30])
def person = GroovyMock(person) // GroovyStub, GroovySpy
def person = Mock(Person) {
1 * sleep()
sing() >> “tra-la-la”
}

25. Meta & Intro
State Based Testing
Data Driven Testing
Interaction Based Testing
Spock Extensions
More Cool Stuff
What we’ll talk about

26. Listeners
Interceptors
Annotation-driven extensions
Global extensions
Spock Extensions

27. Spring Extension
@ContextConfiguration(locations = ["my-app-context.xml"])
class InjectionExamples extends Specification {
@Autowired
Service1 injectedByType
@Resource
Service1 injectedByName
@Autowired
ApplicationContext context
}

28. Meta & Intro
State Based Testing
Data Driven Testing
Interaction Based Testing
Spock Extensions
More Cool Stuff
What we’ll talk about

29. Homepage
http://spockframework.org
Source Code
http://github.spockframework.org/spock
Documentation
http://docs.spockframework.org/en/latest
Spock Web Console
http://webconsole.spockframework.org
Spock Example Project
http://github.spockframework.org/spock-example
Slides and Code for this Presentation
http://github.spockframework.org/smarter-testing-with-spock
Mocks Aren’t Stubs
http://martinfowler.com/articles/mocksArentStubs.html
Q&A